HiPlease would someone confirm that my PSU is not up to running my two Nvidia 7900 gtx clock 650Mhz 512Mb memory GPU's.I was running 2x7800gt extreme in sli without a problemPSU is the Akasa 650w Power plus,This psu as 4 12v rails @ 13amp 18amp16amp 8amp minimum reqirements for the new cards they say is 22amp for one and 30amp for two cards both my cards run fine on their own when I fit both cards windows opens and will run about 1 to 2 minutes then the screen is coverd by multi coloured artifacts.After the cost of upgrading,to help run FSX, I don't want to spend another

Hi all.I have found the answer Akasa 650W power plus uses 4 12v rails one 18amp one 16amp one 13amp one 8amp they use the 16amp rail to power the two PCIe slots.and two 7900gtx gpu require a minimum of 30amps for two cards.to be honest I dont know how long it will run with just one card.as they recomend 22amp for one 7900gtx.Best regardsRex