- 81 months ago
I'm currently planning a build for a friend. I will build it for him later this year (probably in november). Here is the part list so far: http://ca.pcpartpicker.com/user/HCkev/saved/1cvW
Of course, the choice of parts might change until I'll build the PC, depending on the deals available in a few months (and if AMD release the Radeon 9000 series, I might consider one of these).
Right now, I plan on a GTX 760, but my friend told me he might be able to spend a bit more money that what he originally planned. So, the logical upgrade for better gaming performance is getting a better video card(upgrading the CPU wouldn't give that much benefit), and the GTX 770 sounds like a good candidate. Of course, there is a single GPU in the build right now, but he plan on adding a second card in SLI 2-3 years later as an upgrade, so the build will need some PSU headroom to support the additional card.
While the Thermaltake Smart 750W (Which is the same internally as the Corsair TX750, according to TechPowerUp) is definitely enough for SLI GTX 760, I fear it might be a bit short on power for SLI GTX 770.
I will overclock the CPU, as much as the H60 will allows (maybe something around 4.5GHz?), and since the FX-8350 does consume a bit more power than the Intel equivalent, I think it's something to take into consideration.
Nvidia recommends a 850W for SLI GTX 770, but those recommended wattages are often a bit exaggerated... They also recommend 62A on the +12V rail, which is what the PSU rated for - So I assume it will be fine. Right?
PcPartPicker's power consumption with dual GTX 770 is estimated at 705W. With the overclocked CPU, it will probably go over 800W... Now, I assume this PSU will probably be able to handle a 800W load without problem like most good PSUs, which are often able to deliver more than what they are rated for. I also guess that this is the maximum wattage the whole build would consume in the worst scenario (i.e., stress testing to run the system at 100%), so the real world usage for gaming would probably be less than that. But I'm not sure if I should take the risk or go with a 850W instead, which will make the build price a bit over the budget...
I did a bit of googleling, and some people says it's enough, others says it's not... So I'm confused. Any advice? Is anyone successfully running dual GTX 770 using comparable or lesser 750W PSU?
Thanks in advance!