porksmuggler said: I'll probably stir up trouble saying this, but I'd say the revision 1,01 X Hero is the better VRM implementation, obviously over the revision 1,00 X Hero, but also the XI Hero. The PWM, doublers, and mosfet arrangement seems better to me than the older style parallel, non-doubler arrangement on the XI Hero, regardless of the SiC639s. Click to expand...

I like to share you what CPU power can deliver on a Z390 motherboard with i9-9900K, ambient 25c, a open loop bitspower water system cooled a 5.2GHz 9900K, the video is showing, a sFFT (default)prime95 stressing 3hrs with avx2 on a 9900K, meanwhile the CPU is drawing around 350watts, the aorus extreme mosfets without heatshink are just below 90c, would this is the most power-house deisgn mb of Z390? Click to expand...

Well this isn't youtube so no pitchforks.Rev 1.01 Hero X is probably going to run a bit hotter vs the Z390, due to switching times (Channel 1= 35ns typical at V_Gen =10V and 80ns at V_Gen=4.5V) and the thermal resistance (~3°C/W) . It's a 60A powerblock though. If you use the typical values for V_GS=10V it is around 89% efficient for 138A to 190A and power dissipation is quoted at 2.5W max for Channel 1 / Channel 2 so it should be able to work if the heatsink functions. The issue is the Z370 ROG Maximus X Hero heatsink is a decoration without a heatpipe or much surface area.The ZF906 is mainly advantageous vs Powerpaks / Low RDS(on) mosfets by the low on state resistance (0.9 to 1.2 milliohms for the low side fet depending on V_GS=10V or V_GS=4.5V; 3 to 4 milliohms for high side).See https://www.vishay.com/docs/67547/sizf906dt.pdf They're about $0.75 each https://octopart.com/sizf906dt-t1-ge3-vishay-76953641 The 50A Infineon Optimos powerblock on the old Hero 1.0 had a lower power rating but switching times for the parts in the family were quite low (below 10ns).SiC639 now used on the new z390 ROG Hero runs around $1.15 and is a powerstage.------hicookie looks like having fun with Aorus Xtreme: