Good enough psu?

[Skioco]

hi i have this power supply http://www.newegg.com/Product/Product.aspx?Item=N82E16817153036 and wish to use an extra gtx 275 on my current rig with molex to pcie addapters TEMPORARILY is this a ok psu for now?

my rig
amd athlon 640
rog crosshair formula 4
12gb ddr3 ram
500gb green hdd
4 fans
gtx 275

 

[i7Baby]

For 2 x GTX275 in SLI you'll need 50A on the 12V rail and 800W for the pc. I wouldn't recommend the Thermaltake power supply anyway.

Look for one of these from Tier One - http://www.tomshardware.com/answers/id-1804779/power-supply-unit-tier-list.html#13224310

eg Antec HCG 850M

Though for the same money, you could buy a GTX750Ti and run on your current psu and outperform the gtx275 SLI