I've decided to upgrade pretty much the whole computer (for gaming) and I thought I'd start with the graphics card because it is the most important thing for gaming right? So I've decided on a GTX670, so many more CUDA cores than the previous gen etc, BUT I have a problem, I know that PCI-e versions are backwards compatible, but will a GTX670 work on a PCI-e 2.0 slot? It is the same size and everything, x16, and I thought it would maybe just be a type of bandwidth or something...? I was going to to do it over time because I'm not exactly wealthy, I've only just turned 16, so I was thinking this GTX670 would tide me over until I get the new mobo and processor and then just transfer the graphics card... So if it won't work then I will just get the mobo and processor first. So will it? And why if you know, I'm learning this stuff
Oh and yes, already checked that, it's fine, the power consumption for these cards are very good I hear, only two 6 pins? I upgraded my PSU already so should be able to handle it
750 watter should be fine for SLI'ing two 670's ...... I'd use an 850 watter though if using non-refercne cards and your planning to go for significant OC's.
Guru3D took their Asus 670 TOP to a boost clock of 1280 (915 is reference). It should draw about 180 watts at that speed....149 is typical for a reference card. Overclocking a 2500k to say 4.7 Ghz will add about 42 watts....
So for a overclocked CPU and overclocked twin GPU's, I'd want (31 + 31 + 42) 104 more watts than a stock box.