eduncan911 SSC Member Total Posts : 851

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I'm getting things setup, waiting on my ATI cards to arrive next week. Until then I've set my 2x Titans in my gaming rig up on coin mining today. I really have to thank the guys in the main thread that is now a sticky... Without all their help we wouldn't be here!



Got to remember all the junk I have running before reading these numbers... MSI Afterburner w/all graphs @ 1s interval. SLI enabled across 3 screens for Nvidia Surround gaming - all 3 monitors activated. I am working inside of a VMware VM w/8GB of ram allocated to it and 4 Virtual cores (out of my 6 cores from my 4930k @ 4.7 Ghz w/HT enabled).



Today, I finally had time to yank off the ACX coolers and put on my reference coolers. I also took the time to replace all of the cheap thermal squishy pads on the reference cooler and put on some high quality ones w/6 kW ratings. I am shocked that I am getting better temps then I was with the ACX coolers (same thermal paste, same thermal pads, etc). I had to remove the side panel before to keep the ACX-cooled Titans somewhat managable, though the GPU closes tot eh CPU always overheated and I had to tame it. I can now run both GPUs at full core speeds.



Also if you haven't seen my previous posts, I am running Skyn3'ts custom BIOS to disable the Boost and lock in my clock rates.



Currently running:



Core: 1176 Mhz (I game at 1202 Mhz)

Memory: 6000 Mhz (doesn't seem to matter)

Core voltage: -100 (lowest it will go, 1.15V, BIOS limited)





cudaminer.exe -d 0,1 -H 1 -i 0 -l T14x24 -C 2 -o stratum+tcp://fast-pool.com:3333 -O eduncan911.m01-cuda01:none

^- be careful and don't use T14x24 unless you have a Titan. Set it to "auto" instead.

^- feel free to mine a bit for me. :)

^- Memory ussge with x24 is a whopping 3.4 GB!



Results:









Power usage 9.8 Amps * 116V = 1136.8W on a SuperNOVA 1300W G2

^- That's roughly 1.2 khash/j

^- I'm sure if I remove the 4.7 Ghz @ 160 Mhz FSB overclock that would come down...



I can get over 1400 khash/s if I push the temps and voltage, but I didn't like how high that was getting.



I use the Power Target to limit the noise/temps during the day today. I limit the Power Target to 100% which on this custom BIOS is a TDP of 375W. It keeps the noise waaaay down to acceptable levels, which generates about 975 khash/s. But I am leaving it at this level at night for now.











post edited by eduncan911 - EDIT: Be sure to read through the thread. Thanks to the community, I keep tweaking and getting more and more out of the cards, while lowering the temps more and more. The latest update is here: http://forums.evga.com/FindPost/2089744 ----I'm getting things setup, waiting on my ATI cards to arrive next week. Until then I've set my 2x Titans in my gaming rig up on coin mining today. I really have to thank the guys in the main thread that is now a sticky... Without all their help we wouldn't be here!Got to remember all the junk I have running before reading these numbers... MSI Afterburner w/all graphs @ 1s interval. SLI enabled across 3 screens for Nvidia Surround gaming - all 3 monitors activated. I am working inside of a VMware VM w/8GB of ram allocated to it and 4 Virtual cores (out of my 6 cores from my 4930k @ 4.7 Ghz w/HT enabled).Today, I finally had time to yank off the ACX coolers and put on my reference coolers. I also took the time to replace all of the cheap thermal squishy pads on the reference cooler and put on some high quality ones w/6 kW ratings. I am shocked that I am getting better temps then I was with the ACX coolers (same thermal paste, same thermal pads, etc). I had to remove the side panel before to keep the ACX-cooled Titans somewhat managable, though the GPU closes tot eh CPU always overheated and I had to tame it. I can now run both GPUs at full core speeds.Also if you haven't seen my previous posts, I am running Skyn3'ts custom BIOS to disable the Boost and lock in my clock rates.Currently running:Core: 1176 Mhz (I game at 1202 Mhz)Memory: 6000 Mhz (doesn't seem to matter)Core voltage: -100 (lowest it will go, 1.15V, BIOS limited)cudaminer.exe -d 0,1 -H 1 -i 0 -l T14x24 -C 2 -o stratum+tcp://fast-pool.com:3333 -O eduncan911.m01-cuda01:none^- be careful and don't use T14x24 unless you have a Titan. Set it to "auto" instead.^- feel free to mine a bit for me. :)^- Memory ussge with x24 is a whopping 3.4 GB!Results:Power usage 9.8 Amps * 116V = 1136.8W on a SuperNOVA 1300W G2^- That's roughly 1.2 khash/j^- I'm sure if I remove the 4.7 Ghz @ 160 Mhz FSB overclock that would come down...I can get over 1400 khash/s if I push the temps and voltage, but I didn't like how high that was getting.I use the Power Target to limit the noise/temps during the day today. I limit the Power Target to 100% which on this custom BIOS is a TDP of 375W. It keeps the noise waaaay down to acceptable levels, which generates about 975 khash/s. But I am leaving it at this level at night for now.

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#1 83 Replies Related Threads

_Nite_ Insert Custom Title Here Total Posts : 19183

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I see a problem in your screenshot though, its showing 89 - 90% which means you are getting lots iinvalid work turned in, which is not good. It should never be any lower then 99% (all 4 of my nvidia cards are staying above 99% at all times)



You have a stability problem somewhere still on the overclocks with your cards or the pool server you are using isn't very efficent, one of them is causing the % to be lower.





post edited by _Nite_ - Glad I helped you out on the Litecoin Resource thread!I see a problem in your screenshot though, its showing 89 - 90% which means you are getting lots iinvalid work turned in, which is not good. It should never be any lower then 99% (all 4 of my nvidia cards are staying above 99% at all times)You have a stability problem somewhere still on the overclocks with your cards or the pool server you are using isn't very efficent, one of them is causing the % to be lower.

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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink) Oh, is that what those percentages mean?!?



You are right then. I'll mess with it more. Dang, though it was kicking butt.

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Spongebob28 iCX Member Total Posts : 328

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post edited by Spongebob28 - You should be setting the Titans to T14x32 and not T14x24. Titans, 780, 780 Ti all can do 32 warps. You are limiting your self by only ruining 24 warps.





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Spongebob28 iCX Member Total Posts : 328

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Ribbons : 1 Re: A couple of Titans >1350+ khash/s permalink) Also, there is no point in using -C 2. That command is ignored in the T kernel. It says it at the top when you first start the miner if you have that command on. On a side note, you might want to use the -m command. --->[-m] list of flags (0 or 1) to make the devices allocate their scrypt scratchpad in a single, consecutive memory block. On Windows Vista, 7/8 this may lead to a smaller memory size being used.







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_Nite_ Insert Custom Title Here Total Posts : 19183

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink) eduncan911

Oh, is that what those percentages mean?!?



You are right then. I'll mess with it more. Dang, though it was kicking butt.







either that or the ming pool server you were using causes the lower percentage as well (just found out about this today when I was testing other mining pool sites)

either that or the ming pool server you were using causes the lower percentage as well (just found out about this today when I was testing other mining pool sites)

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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink)



Update: I did some testing and found out that I removed the LLC Disable mod earlier, trying to lower the temps last night. This is what made it a tiny itty bit unstable with the 1.15V undervolting. Adding the LLC Disabled mod back got stable - but increased temps obviously as that adds 0.025mv to the equation as I trying to remove as much voltage as possible.



With LLC Disabled, I am now able to hit 1202 Mhz with a decent temp. You'll notice the recent dip in temps as when I got home after a few hours of it running, i noticed the temps were knocking on the 90's door - and I have a temp limit of 90C set. So, i removed the side panel and the temps dropped a good chunk almost instantly.



You'll notice that 11 were not verified/dropped. This was my fault at the beginning as I still had +700 for memory (7,400) set from a gaming session earlier. It started out at like 82% accepted by dropping the 11 out of 60 (accepted 49/60) or something at first until I realized the memory settings.



Put the memory overclock back to default, 6000 Mhz, and it hasn't dropped a single one ever since for about 5 hours straight:









I don't like the temps this high though, even with the NY winter here today (10F). Needless to say, it won't stay this high for long as I'll be purposely lowering the clocks to keep the temps down. There's so much more left to go with these Titans that I almost hate to do that! I have a lot of watercooling equipment left over that all I would need is a couple of blocks... But, I went back to air-cooling because I change setups and move so often that watercooling was just a burden.



Besides, I'd rather spend the money to watercool the 7990s and 290xs I have coming anyways.



I wanted to post this to show that Nvidia GPUs really can kick butt. Though, the wattage/power usage is really high for the khash/j compared to ATI. Right now I have my Titans pulling about 680 khash/s to 700 khash/s each. If only power was free!Update: I did some testing and found out that I removed the LLC Disable mod earlier, trying to lower the temps last night. This is what made it a tiny itty bit unstable with the 1.15V undervolting. Adding the LLC Disabled mod back got stable - but increased temps obviously as that adds 0.025mv to the equation as I trying to remove as much voltage as possible.With LLC Disabled, I am now able to hit 1202 Mhz with a decent temp. You'll notice the recent dip in temps as when I got home after a few hours of it running, i noticed the temps were knocking on the 90's door - and I have a temp limit of 90C set. So, i removed the side panel and the temps dropped a good chunk almost instantly.You'll notice that 11 were not verified/dropped. This was my fault at the beginning as I still had +700 for memory (7,400) set from a gaming session earlier. It started out at like 82% accepted by dropping the 11 out of 60 (accepted 49/60) or something at first until I realized the memory settings.Put the memory overclock back to default, 6000 Mhz, and it hasn't dropped a single one ever since for about 5 hours straight:I don't like the temps this high though, even with the NY winter here today (10F). Needless to say, it won't stay this high for long as I'll be purposely lowering the clocks to keep the temps down. There's so much more left to go with these Titans that I almost hate to do that! I have a lot of watercooling equipment left over that all I would need is a couple of blocks... But, I went back to air-cooling because I change setups and move so often that watercooling was just a burden.Besides, I'd rather spend the money to watercool the 7990s and 290xs I have coming anyways.

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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink) Spongebob28

You should be setting the Titans to T14x32 and not T14x24. Titans, 780, 780 Ti all can do 32 warps. You are limiting your self by only ruining 24 warps.

I thought I read that was well! But when running Autotune, I didn't see x32 as an option in the debug output.



Thanks! I'm using T14x32 now, and... Whoa... VRAM memory usage has jumped to 4.3 GB now!







I am not really seeing any more hash though. Maybe 5 to 10 at most...



Spongebob28

Also, there is no point in using -C 2. That command is ignored in the T kernel. It says it at the top when you first start the miner if you have that command on. On a side note, you might want to use the -m command. --->[-m] list of flags (0 or 1) to make the devices allocate their scrypt scratchpad in a single, consecutive memory block. On Windows Vista, 7/8 this may lead to a smaller memory size being used.

Could you explain this a bit more? I thought the -C was implied with Titans (yes, ignored, didn't hurt to use it) and that when using -C that -m 0 was implied? I'm still a bit confused to that as I didn't see any examples on how to use that...



When I specify:



cudaminer.exe -d 0,1 -i 0,0 -m 0,0 -l T14x32 -H 1



I get:



[2014-01-04 18:29:25] GPU #0: GeForce GTX TITAN with compute capability 3.5

[2014-01-04 18:29:25] GPU #0: the 'T' kernel requires single memory allocation

[2014-01-04 18:29:25] GPU #0: interactive: 0, tex-cache: 0 , single-alloc: 1

[2014-01-04 18:29:25] GPU #0: using launch configuration T14x32

[2014-01-04 18:29:25] GPU #1: GeForce GTX TITAN with compute capability 3.5

[2014-01-04 18:29:25] GPU #1: the 'T' kernel requires single memory allocation

[2014-01-04 18:29:25] GPU #1: interactive: 0, tex-cache: 0 , single-alloc: 1

[2014-01-04 18:29:25] GPU #1: using launch configuration T14x32



I don't know if that's right or not.

Attached Image(s) I thought I read that was well! But when running Autotune, I didn't see x32 as an option in the debug output.Thanks! I'm using T14x32 now, and... Whoa... VRAM memory usage has jumped to 4.3 GB now!I am not really seeing any more hash though. Maybe 5 to 10 at most...Could you explain this a bit more? I thought the -C was implied with Titans (yes, ignored, didn't hurt to use it) and that when using -C that -m 0 was implied? I'm still a bit confused to that as I didn't see any examples on how to use that...When I specify:I get:I don't know if that's right or not.

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_Nite_ Insert Custom Title Here Total Posts : 19183

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink) yea the 7990 and 290x will definately need water cooling, I didn't want to deal with those heaters and the noise, its why I'm choosing to get 270x cards for my Litecoin build.



Thats a much better percentage on the titan btw, 98% is great.



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Spongebob28 iCX Member Total Posts : 328

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Ribbons : 1 Re: A couple of Titans >1350+ khash/s permalink) Set it to -m 1



-m 0 I believe turns it off.





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Re: A couple of Titans >1350+ khash/s permalink) Can someone explain the warps kernel settings? My GTX 780 is running T15x12 and I'm getting about 480 kh/s. Should I try a different configuration?



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Spongebob28 iCX Member Total Posts : 328

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink) shadowboricua

Can someone explain the warps kernel settings? My GTX 780 is running T15x12 and I'm getting about 480 kh/s. Should I try a different configuration?







yes I seen between 500 - 600 on a 780



try T15x13, T15x14, etc etc



If you get can't validate on CPU errors or driver crashes then you know you wen't too high

yes I seen between 500 - 600 on a 780try T15x13, T15x14, etc etcIf you get can't validate on CPU errors or driver crashes then you know you wen't too high

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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink)



Didn't really spend more than an hour or so as I wanted to get my Titans back in.



The 780 Classy will be going into my Linux router in a few days, until the Step Up is ready to the 780 Ti (whcih I'll turn right around and sell New In Box, unopened, to pick up a couple ATI cards). I think I liked it right around 620 khash/s for temps, power draw, etc. Anything it took to get higher was just running into diminishing returns.





post edited by eduncan911 - My 780 Classy liked T12x22 best (didn't try anytthing > x24 though, as I didn't know about x32 at the time). I was getting up to 690 khash/s on my 780 Classified, but the power draw was insane - 850W from the wall with a single GPU! We're talking a poor khash/J rating there. It took a hell of an overclock at 1350 Mhz to get that high, not to mention a lot of voltage (1.35V, maxed in the Classified controller). Anything higher started to get the "Could not validate on CPU" stuff, which I thought was my CPU overclock.Didn't really spend more than an hour or so as I wanted to get my Titans back in.The 780 Classy will be going into my Linux router in a few days, until the Step Up is ready to the 780 Ti (whcih I'll turn right around and sell New In Box, unopened, to pick up a couple ATI cards). I think I liked it right around 620 khash/s for temps, power draw, etc. Anything it took to get higher was just running into diminishing returns.

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GTX 770 = 220w @ 330 KH/s

GTX 570 = 180w @ 220 KH/s

GTX 570 = 180w @ 200 KH/s

GTX 460 = 150w @ 125 KH/s



so thats 730w for 875 KH/s



when I get the 3 x R9 270x it will basicly be double the hashrate with 1/3 less power usage. (probably like 1600 KH/s for 500w power consumption)

post edited by _Nite_ - its not much better for me eduncan911 lolGTX 770 = 220w @ 330 KH/sGTX 570 = 180w @ 220 KH/sGTX 570 = 180w @ 200 KH/sGTX 460 = 150w @ 125 KH/sso thats 730w for 875 KH/swhen I get the 3 x R9 270x it will basicly be double the hashrate with 1/3 less power usage. (probably like 1600 KH/s for 500w power consumption)

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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink) _Nite_

its not much better for me eduncan911 lol



GTX 770 = 220w @ 330 KH/s

GTX 570 = 180w @ 220 KH/s

GTX 570 = 180w @ 200 KH/s

GTX 460 = 150w @ 125 KH/s



so thats 730w for 875 KH/s



when I get the 3 x R9 270x it will basicly be double the hashrate with 1/3 less power usage. (probably like 1600 KH/s for 500w power consumption)





Are you undervolting? That made a huge difference on my GTX 460 and Titans. I figured about a 110W power draw from my EVGA GTX 460 EE at stock speeds but voltage turned all the way down.



Funny how the 780 Classy though didn't like any undervolting except at stock speeds. Anything higher than stock wanted normal or higher voltage. Maybe a sign that when you have that many phases (14 = 12+2), instead of like the Titan's 6 + 1 phases for the VRM section, you need normal voltage to drive them - and they will provide a lot of power.

Are you undervolting? That made a huge difference on my GTX 460 and Titans. I figured about a 110W power draw from my EVGA GTX 460 EE at stock speeds but voltage turned all the way down.Funny how the 780 Classy though didn't like any undervolting except at stock speeds. Anything higher than stock wanted normal or higher voltage. Maybe a sign that when you have that many phases (14 = 12+2), instead of like the Titan's 6 + 1 phases for the VRM section, you need normal voltage to drive them - and they will provide a lot of power.

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Re: A couple of Titans >1350+ khash/s permalink) _Nite_

Nah just running everything at out of the box settings





Except for the 780 Classy, which has a huge ACX cooler on it, everything I got (GTX 460 EE, 2x Titans) all overheated on "out of the box" settings. Overheating = throttling or > 90C in my book. Some fan settings helped, but not enough IMO.



If you wanted to tweak only one thing, undervolting is what you would want to do. The only GPU I ran into issues with was the GTX 460 undervolting it. I had to bump it up 1 notch to be stable as it went too low.

Except for the 780 Classy, which has a huge ACX cooler on it, everything I got (GTX 460 EE, 2x Titans) all overheated on "out of the box" settings. Overheating = throttling or > 90C in my book. Some fan settings helped, but not enough IMO.If you wanted to tweak only one thing, undervolting is what you would want to do. The only GPU I ran into issues with was the GTX 460 undervolting it. I had to bump it up 1 notch to be stable as it went too low.

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink) yea well the 780 and Titan are hotter running cards so I casn understand that in your case



my GTX 770 and 2 x GTX 570 only hit 80C, and my GTX 460 hits 75C



None of them are throttling.



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shadowboricua iCX Member Total Posts : 489

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Re: A couple of Titans >1350+ khash/s permalink) Spongebob28

For a 780, your setting should be T12x32









So should I see better Hashrates when warps are optimized? I tried T12x32... and T15x32 nothing really changed.

post edited by shadowboricua - So should I see better Hashrates when warps are optimized? I tried T12x32... and T15x32 nothing really changed.



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shadowboricua iCX Member Total Posts : 489

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Re: A couple of Titans >1350+ khash/s permalink) eduncan911

My 780 Classy liked T12x22 best (didn't try anytthing > x24 though, as I didn't know about x32 at the time). I was getting up to 690 khash/s on my 780 Classified, but the power draw was insane - 850W from the wall with a single GPU! We're talking a poor khash/J rating there. It took a hell of an overclock at 1350 Mhz to get that high, not to mention a lot of voltage (1.35V, maxed in the Classified controller). Anything higher started to get the "Could not validate on CPU" stuff, which I thought was my CPU overclock.



Didn't really spend more than an hour or so as I wanted to get my Titans back in.



The 780 Classy will be going into my Linux router in a few days, until the Step Up is ready to the 780 Ti (whcih I'll turn right around and sell New In Box, unopened, to pick up a couple ATI cards). I think I liked it right around 620 khash/s for temps, power draw, etc. Anything it took to get higher was just running into diminishing returns.













Just tried T12x22 on my GTX 780 SC ACX; hashrates went up to 500! I keep wondering if there are even better configurations. But how to find them?

Just tried T12x22 on my GTX 780 SC ACX; hashrates went up to 500! I keep wondering if there are even better configurations. But how to find them?



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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink) _Nite_

yea well the 780 and Titan are hotter running cards so I casn understand that in your case



my GTX 770 and 2 x GTX 570 only hit 80C, and my GTX 460 hits 75C



None of them are throttling.







Actually, I found the sweet spot to get the Titans running at 79 to 80C: the Temp Limiter. The 600/700 series have the famous Power Target that limits yep. But there's also a Temp Limiter that you can set manually to control temps. I was previously using the Power Target to limit fan/temps somewhat, but with the room temps drastically changing I was chasing a white ghost in that adventure.



For the last 9 hours, I've been running with fans at 100% and Target Temp set to 80C. It's a night and day difference!



Current hash rates are:



[2014-01-05 09:34:52] GPU #0: GeForce GTX TITAN, 4071424 hashes, 659.27 khash/s

[2014-01-05 09:35:19] GPU #1: GeForce GTX TITAN, 18178048 hashes, 661.13 khash/s

[2014-01-05 09:35:19] accepted: 1045/1053 (99.24%), 1320 khash/s (yay!!!)



^- no more screenshots... I am logging to file now. Btw, that was a bit difficult to figure out. Previously I redirected the pipe with:



cudaminer -options >> logfile.txt



That didn't redirect the output of the cudaminer though. The trick is to use "2>". Like:



cudaminer -options 2>> logfile.txt



I've been coding for 25 years, and never saw that "2>" before. Odd.



^- the hash rates fluctuate between 1250 and 1400, depending on the room temps. If I crack a window (12F outside) it shoots to 1405 khash/s @ 1202 Mhz core, and 100% fan actually cools things down to 62C! But, the boss didn't like that (wife).



^- this also allows me to do exactly what I want to do during the day: limit noise! I can lower the fan speed manually to an acceptable 75%. The temps stay at 80C, but my hash rates drops to about 1000 khash/s. I got the sound where I want it. Temps where I want it. Easily by setting the Temp Target and forgetting it. And, my hash rates increased from 800 to 1000 khash/s with this combination. Before, the wild core clock fluctuations with the Power Target limiting I think was causing more harm - and I couldn't control the temps long term.



I contribute the "drops", or boos, to the wild fluctuations with the GPU usage and voltages up and down (goes even lower now with Temp Limiting). But still up at 99% since I started it at 80C temp limit.







Using the temp limiter made the core speeds failr high and stable now. Only the voltages fluctuate a little (to lower temps), and the GPU usage seems to be more erratic.



And this is in a non-vented room. As of a few minutes ago, I am using a fan now to blow the heat out into the hallway in the upstairs from my office to see if I can lower the temps even more.



shadowboricua

eduncan911

My 780 Classy liked T12x22 best (didn't try anytthing > x24 though, as I didn't know about x32 at the time). I was getting up to 690 khash/s on my 780 Classified, but the power draw was insane - 850W from the wall with a single GPU! We're talking a poor khash/J rating there. It took a hell of an overclock at 1350 Mhz to get that high, not to mention a lot of voltage (1.35V, maxed in the Classified controller). Anything higher started to get the "Could not validate on CPU" stuff, which I thought was my CPU overclock.



Didn't really spend more than an hour or so as I wanted to get my Titans back in.



The 780 Classy will be going into my Linux router in a few days, until the Step Up is ready to the 780 Ti (whcih I'll turn right around and sell New In Box, unopened, to pick up a couple ATI cards). I think I liked it right around 620 khash/s for temps, power draw, etc. Anything it took to get higher was just running into diminishing returns.







Just tried T12x22 on my GTX 780 SC ACX; hashrates went up to 500! I keep wondering if there are even better configurations. But how to find them?



Use the options: -l auto -D --benchmark



-l (as in "L", or Launch Config) is how you are specifying the T12x22. -l T12x22, per device. If you have multiple devices, you can fine tune each one separated by a comma: -l T12x22,T15x32



-D, not -d, turns on Debugging - with exactly what you are looking for (T1-T256 or something, and x1=x24). It doesn't show up to x32 though, hence why I wasn't using that at first.



The readme file is correct in that you should only use -D for a single GPU. If you have multiple devices, only configure it

to look for 1 device at a time to fine tune exactly the best config (and it will flood you with multiple devices if you don't).



So to recap, use the following if you have multiple GPUs (aka devices):



GPU #0: cudaminer -d 0 -l auto -D --benchmark

GPU #1: cudaminer -d 1 -l auto -D --benchmark

GPU #2: cudaminer -d 2 -l auto -D --benchmark



If you only have a single GPU, you can omit the -d # part.



And I set my console window to be 200 width in order to see the entire table. Go to the upper-left corner, click it, and then Properties. Set the width to 200 as well as the size to 200. Then run it again.



In my opinion, the x## number has a direct correlation to the amount of ram it uses. For me, x22 filled up 2.8GB on my Titan and 780 Classy. x24 hit 3.00 GB on my Titan and Classy, x32 hits 4.3 GB on my Titan - and I haven't tried it on my 780 Classy, etc. In other words, I think x24 would fill up the 3GB on your 780 which may be too much memory pressure for the best benchmark.



x22 seemed to be the sweet spot with 384-bit bus memory limited to 3GB of ram. I am using x32 on my Titans, and not really seeing any difference in hashes. Well, maybe a little.



You have to remember that the 384-bit bus is limited by bandwidth - you won't ever fill up the entire ram of 6GB on a Titan with a 384-bit bus, unless you have a slow computation (gaming and mining is not slow). But, you can fill up 3GB on a 384-bit bus just fine. On a 256-bit bus, like the 770, 600 series, etc, you can't ever use the entire 4 GB on say my 670s I had, or a 770, etc. Same limitation of bandwidth. But you can fill up 2 GB on a 256-bit bus just fine.



The whole "double memory" thing helps, yes (256-bit double memory to 4 GB, and 384-bit double memory pf 6 GB only in the TItan). But, not for the entire memory amount. I would safely say expect to use only 70 to 75% of the memory of when it is doubled, limited by bandwidth. This may be why my Titans are only using 4.3 GB, instead of 4.5 GB like it should scale between x22, x24 and x32.







post edited by eduncan911 - Attached Image(s) Actually, I found the sweet spot to get the Titans running at 79 to 80C: the Temp Limiter. The 600/700 series have the famous Power Target that limits yep. But there's also a Temp Limiter that you can set manually to control temps. I was previously using the Power Target to limit fan/temps somewhat, but with the room temps drastically changing I was chasing a white ghost in that adventure.For the last 9 hours, I've been running with fans at 100% and Target Temp set to 80C. It's a night and day difference!Current hash rates are:^- no more screenshots... I am logging to file now. Btw, that was a bit difficult to figure out. Previously I redirected the pipe with:That didn't redirect the output of the cudaminer though. The trick is to use "2>". Like:I've been coding for 25 years, and never saw that "2>" before. Odd.^- the hash rates fluctuate between 1250 and 1400, depending on the room temps. If I crack a window (12F outside) it shoots to 1405 khash/s @ 1202 Mhz core, and 100% fan actually cools things down to 62C! But, the boss didn't like that (wife).^- this also allows me to do exactly what I want to do during the day: limit noise! I can lower the fan speed manually to an acceptable 75%. The temps stay at 80C, but my hash rates drops to about 1000 khash/s. I got the sound where I want it. Temps where I want it. Easily by setting the Temp Target and forgetting it. And, my hash rates increased from 800 to 1000 khash/s with this combination. Before, the wild core clock fluctuations with the Power Target limiting I think was causing more harm - and I couldn't control the temps long term.I contribute the "drops", or boos, to the wild fluctuations with the GPU usage and voltages up and down (goes even lower now with Temp Limiting). But still up at 99% since I started it at 80C temp limit.Using the temp limiter made the core speeds failr high and stable now. Only the voltages fluctuate a little (to lower temps), and the GPU usage seems to be more erratic.And this is in a non-vented room. As of a few minutes ago, I am using a fan now to blow the heat out into the hallway in the upstairs from my office to see if I can lower the temps even more.Use the options: -l auto -D --benchmark-l (as in "L", or Launch Config) is how you are specifying the T12x22. -l T12x22, per device. If you have multiple devices, you can fine tune each one separated by a comma: -l T12x22,T15x32-D, not -d, turns on Debugging - with exactly what you are looking for (T1-T256 or something, and x1=x24). It doesn't show up to x32 though, hence why I wasn't using that at first.The readme file is correct in that you should only use -D for a single GPU. If you have multiple devices, only configure itto look for 1 device at a time to fine tune exactly the best config (and it will flood you with multiple devices if you don't).So to recap, use the following if you have multiple GPUs (aka devices):If you only have a single GPU, you can omit the -d # part.And I set my console window to be 200 width in order to see the entire table. Go to the upper-left corner, click it, and then Properties. Set the width to 200 as well as the size to 200. Then run it again.In my opinion, the x## number has a direct correlation to the amount of ram it uses. For me, x22 filled up 2.8GB on my Titan and 780 Classy. x24 hit 3.00 GB on my Titan and Classy, x32 hits 4.3 GB on my Titan - and I haven't tried it on my 780 Classy, etc. In other words, I think x24 would fill up the 3GB on your 780 which may be too much memory pressure for the best benchmark.x22 seemed to be the sweet spot with 384-bit bus memory limited to 3GB of ram. I am using x32 on my Titans, and not really seeing any difference in hashes. Well, maybe a little.You have to remember that the 384-bit bus is limited by bandwidth - you won't ever fill up the entire ram of 6GB on a Titan with a 384-bit bus, unless you have a slow computation (gaming and mining is not slow). But, you can fill up 3GB on a 384-bit bus just fine. On a 256-bit bus, like the 770, 600 series, etc, you can't ever use the entire 4 GB on say my 670s I had, or a 770, etc. Same limitation of bandwidth. But you can fill up 2 GB on a 256-bit bus just fine.The whole "double memory" thing helps, yes (256-bit double memory to 4 GB, and 384-bit double memory pf 6 GB only in the TItan). But, not for the entire memory amount. I would safely say expect to use only 70 to 75% of the memory of when it is doubled, limited by bandwidth. This may be why my Titans are only using 4.3 GB, instead of 4.5 GB like it should scale between x22, x24 and x32.

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#22

eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink)



I can't get it any lower. Temps sky-rocket to 87 to 94C if I remove all checks (300% PT, 1202 mhz core, etc).



But, when using the Temp Target set to 80C - it must remove voltage over down clocking. My volts are reading 1.100 now, plus the 0.025v from LLC for a total of 1.125V. That's lower that I could ever set in the tool manually. And, my cores are hovering around 1163 Mhz on an 1202 Mhz overclock.



So, I'm guessing:



Temp Target hitting = voltage reduced as priority, core speeds stay somewhat stable.

Power Target hitting = core speed reduced as priority, voltage remains high.



I've also backed down the "warps" as someone mentioned down to T14x30 which lowered the memory used from 4.3 GB down to 3.9 GB. The entire command line is:



cudaminer -d 0,1 -i 0,0 -m 1,1 -l T14x30,T14x30 -H 1 -o stratum+tcp://fast-pool.com:3333 -O eduncan911.m01-cuda01:none



This combination now yields, at 80C:



[2014-01-05 12:58:32] GPU #0: GeForce GTX TITAN, 23802240 hashes, 700.59 khash/s

[2014-01-05 12:58:32] GPU #1: GeForce GTX TITAN, 10940160 hashes, 695.48 khash/s

[2014-01-05 12:58:39] GPU #0: GeForce GTX TITAN, 4945920 hashes, 701.44 khash/s

[2014-01-05 12:58:39] accepted: 360/363 (99.17%), 1397 khash/s (yay!!!)

[2014-01-05 12:58:43] GPU #0: GeForce GTX TITAN, 2244480 hashes, 704.56 khash/s

[2014-01-05 12:58:43] accepted: 361/364 (99.18%), 1400 khash/s (yay!!!)



I'll leave it running for the rest of the day like this as we are heading out for shopping and errands and dinner to see how the drops go. I also notice I get "drops" when I come back to the desktop to check email, write these forum posts, etc -yes, I am doing all of this with -i 0,0 set on both Titans. There's a lag when I am using applications (updating Wallet, checking Gmail, etc). And I notice that the drops happen when I am active on the machine.



Anyhoot, Temp Targetting in the 700 series I think is the key for the best power consumption vs temp vs noise levels. If you don't care about noise, set the fan to 100% and let the temp target down-volt the cores for you! Though, you still want to lower the voltage as much as you can first - it goes even lower.



I have submitted for updates to the Mining Hardware Comparisons online - but none have been updated. Basically, Titans can do 700 khash/s with a custom BIOS at 80C. My home office is a little toastie at 71F, with no ventilation. I do have a fan blowing cool air from the hallway into my office, which in turn forces the hot air out top to heat the rest of the upstairs at a nice 68F. The boss (wife) likes this setup!

post edited by eduncan911 - I am now convinced that using the Temp Target limiter actually lowers the voltage even further than I can using MSI Afterburner/EVGA PrecisionX. Using those tools, when I force the voltage all the way the lowest it will go, the volts read 1.175. Which is actually 1.175 + 0.025v due to the LLC being disabled with the mod I have, for a total of 1.2V.I can't get it any lower. Temps sky-rocket to 87 to 94C if I remove all checks (300% PT, 1202 mhz core, etc).But, when using the Temp Target set to 80C - it must remove voltage over down clocking. My volts are reading 1.100 now, plus the 0.025v from LLC for a total of 1.125V. That's lower that I could ever set in the tool manually. And, my cores are hovering around 1163 Mhz on an 1202 Mhz overclock.So, I'm guessing:Temp Target hitting = voltage reduced as priority, core speeds stay somewhat stable.Power Target hitting = core speed reduced as priority, voltage remains high.I've also backed down the "warps" as someone mentioned down to T14x30 which lowered the memory used from 4.3 GB down to 3.9 GB. The entire command line is:This combination now yields, at 80C:I'll leave it running for the rest of the day like this as we are heading out for shopping and errands and dinner to see how the drops go. I also notice I get "drops" when I come back to the desktop to check email, write these forum posts, etc -yes, I am doing all of this with -i 0,0 set on both Titans. There's a lag when I am using applications (updating Wallet, checking Gmail, etc). And I notice that the drops happen when I am active on the machine.Anyhoot, Temp Targetting in the 700 series I think is the key for the best power consumption vs temp vs noise levels. If you don't care about noise, set the fan to 100% and let the temp target down-volt the cores for you! Though, you still want to lower the voltage as much as you can first - it goes even lower.I have submitted for updates to the Mining Hardware Comparisons online - but none have been updated. Basically, Titans can do 700 khash/s with a custom BIOS at 80C. My home office is a little toastie at 71F, with no ventilation. I do have a fan blowing cool air from the hallway into my office, which in turn forces the hot air out top to heat the rest of the upstairs at a nice 68F. The boss (wife) likes this setup!

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#23

Spongebob28 iCX Member Total Posts : 328

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Ribbons : 1 Re: A couple of Titans >1350+ khash/s permalink) With the setting of T12x13, my 780 Classified only uses 1.8 GB. My 670 SCs are using 1.1 GB and 995 MB with the setting of K7x32.







#24

_Nite_ Insert Custom Title Here Total Posts : 19183

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink) does more vram usage = more performance? Got me curious now cause I'm only using 860MB of my GTX 770 with my setting of K6x21



the card has 4GB VRAM available to use.



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Spongebob28 iCX Member Total Posts : 328

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Ribbons : 1 Re: A couple of Titans >1350+ khash/s permalink) Good question, Nite.







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eduncan911 SSC Member Total Posts : 851

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Re: A couple of Titans >1350+ khash/s permalink) _Nite_

does more vram usage = more performance? Got me curious now cause I'm only using 860MB of my GTX 770 with my setting of K6x21 the card has 4GB VRAM available to use.





My gut feeling, per my "double memory" explanation above with the 256 bit bus u got in the 770 is to keep your ram around 2.5 to 2.8 GB max, and don't exceed that. Use whatever x## gets you to that number and don't go higher. Like start with x14 with --benchmark and go from there.



Then again, my feelings are all with the 780 Classy and Titan with 384-bit buses, not the 256 bit bus. May be totally different.



Use the benchmarking and see. post edited by eduncan911 - My gut feeling, per my "double memory" explanation above with the 256 bit bus u got in the 770 is to keep your ram around 2.5 to 2.8 GB max, and don't exceed that. Use whatever x## gets you to that number and don't go higher. Like start with x14 with --benchmark and go from there.Then again, my feelings are all with the 780 Classy and Titan with 384-bit buses, not the 256 bit bus. May be totally different.Use the benchmarking and see.

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#27

_Nite_ Insert Custom Title Here Total Posts : 19183

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink)



performance didn't change much though and now my desktop is super laggy..... lol



I'm gonna try this on my GTX 570 cards since I don't use those computers, but on my GTX 770 I will have to enable interactive mode.

post edited by _Nite_ - wow that benchmark feuture is neat I didn't even know it had that, my new launch value is K24x16 now and using 1.9GB of VRAMperformance didn't change much though and now my desktop is super laggy..... lolI'm gonna try this on my GTX 570 cards since I don't use those computers, but on my GTX 770 I will have to enable interactive mode.

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#28

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Ribbons : 46 Re: A couple of Titans >1350+ khash/s permalink) ok I ran the benchmark on all my cards



4GB GTX 770 = K24x16



2.56GB GTX 570 = F98x5



1.28GB GTX 570 = F45x3



768MB GTX 460 = F28x4



now I just have to change the x16, x5, x3, and x4 to higher numbers for the final tweak right?



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#29