matrices Posted December 20, 2010 Share Posted December 20, 2010 I have noticed an oddity with my PSU that's been bugging me for a while now. As I understand it, this PSU is basically two 500w PSUs sandwiched together. The "rail" distribution diagram is here: http://forum.corsair.com/forums/showthread.php?t=70317 The official advice is to always install your secondary video card's 6-pin connectors to 12V2. That seems to make sense, since 12V1 is already used by the motherboard, the CPU, and 75w from each video card through the PCI-E slots. So putting the 6-pin connector on 12V2 helps balance things out (and the prewired 6-pins are already 12V2). However, my PSU trips when I run my two highly overclocked GTX 470s on 12V2. This does *not* happen when I switch one GPU to 12V1. While that's nice, it seems like my 12V2--aka the second mini-PSU within the unit--is partially defective. Relying on the 12V1 obviously forces me to be more conservative with my CPU OC, since it is now sharing more power than is recommended. My system: 2xGTX 470s at 1.12v and 825mhz i5 at 3.8ghz and 1.375v Does my theory about this make sense? Should I RMA the unit? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted December 21, 2010 Corsair Employee Share Posted December 21, 2010 The Unit should support 3 of these cards, so if you have problems with one of the cards on 12v1 and there are no problems when you have them both on 12v2 then lets get it replaced! Request an RMA Link to comment Share on other sites More sharing options...
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