Nice work getting this built!! I just received my A4 as well and was really tempted to try this idea, but having waited nearly 1.5 years I decided that I could wait a little longer and see what was around the corner with Vega-- I'm hoping that AMD produces an update to the R9 Nano. Click to expand...

I purchased the same splitter as you did for this build, however, instead of getting one with a short length I got one that's 30cm long that would wrap around to the GPU side of the case. However, I'm concerned about crosstalk in riser since it's so long and each of the leads is not well isolated like the 3M one. Have you noticed any issues due to crosstalk in your shorter bifurcated riser? Which risers are you using to connect to the GPUs? It looks like one of them is the 3M one, but what is the black one? Click to expand...

Thanks, couldn't have done it without the extensive development y'all put in!Per jb1 's comments:Yeah I thought the same thing, but 1. there's no guarantee that AMD will issue an updated Nano (though I'd snap it up in a second if they did!), and 2. it would need to be absolutely NO bigger than the current one or there is no possible way it would fit in the case.The wine corks propping up the bottom of the second card may give the impression that there is room under the card, but there really isn't: the 8-pin PCI-E power plug barely has room to clear the SSD bracket at the bottom of the case. Even if the bracket were removed completely, it wouldn't free up much space. Any future cards fitting into this case would really need to be Nano-sized or smaller!No issues with crosstalk. It's quite stable. I've ran Firestrike, Heaven, Valley etc. and the only thing that crashes it is Furmark, but I think that's an issue with the PCI-E bifurcated Crossfire setup: it just crashes on startup, not due to any instability.The riser I used is a Lian Li riser , which is rather expensive but seems to be quite high quality. The two things that ended up being crucial about this riser don't have to do with stability.The card end of the riser is at an angle, which allowed me to thread it through to the other side of the case after cutting the GPU shroud provided with the case:and the cables of the riser are split into 4-lead chunks instead of bundled into a single cable, which allowed me to spread them out flat in order to close the top of the case:You can see the riser looping through from the other side of the case right next to the main 24-pin motherboard power connector.