Power required for graphics card sli

[menacedude]

Hey guys

I have the following spec pc

i5 2500k
8gb Corsair Vengeance
Asus 1155 P8P67 EVO REV 3.0 S/L
Asus GTX 560ti 448 cores
Corsair 750tx

I've got some money saved and am looking to get another 448 core graphics card to sli, does anyone know if my PSU will be enough? The corsair website only lists 560ti or 580. Nothing is currently overlocked.

Cheers

 

[bavman]

If you're not overclocking then the 750tx will be good enough to run both. It might be cutting it close if you start overclocking the graphics and cpu.

 

[menacedude]

thanks for the help, just needed to make sure before buying

 

[jemm]

Corsair is a good brand, 750W is enough for SLI 2x GTX 560ti 448 cores -- you should be able to go for a moderate overclock too.

 

[jsc]

A pair of 570's with pull about 30 amps under load, so I would estimate that a pair of 560ti-448's (basically slightly crippled 570's) would pull about 25 - 28 amps.

A TX750 with its 60 amp 12 volt rail will be more than adequate.

 

[menacedude]

thanks for all the help guys, I read on the box of the 448 core card that it needs 38A so wasn't sure that my PSU would be enough.