Is 750watt enough for 2 GTX 470?

mrjack

mrjack

VIP Member
It should be. I've seen a few using that PSU in GTX 470 SLI systems, even with both cards and the processor (in this case an AMD Phenom II X6 1055t) overclocked.
 
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G

gamerwithoutrig

New Member
mrjack said:
It should be. I've seen a few using that PSU in GTX 470 SLI systems, even with both cards and the processor (in this case an AMD Phenom II X6 1055t) overclocked.
Click to expand...

My system:
Gigabyte GA-P55-USB3, Socket-1156
Intel Core™ i7 Quad Processor i7-870
Corsair Dominator DHX DDR3 1600MHz 8GB
EVGA GeForce GTX 470 1280MB PhysX CUDA (SLI in the future when I can pay for it)
WD Caviar® Black 1TB 3,5", SATA 6 Gb/s

Still think that it's enough?
 
fastdude

fastdude

Active Member
gamerwithoutrig said:
My system:
Gigabyte GA-P55-USB3, Socket-1156
Intel Core™ i7 Quad Processor i7-870
Corsair Dominator DHX DDR3 1600MHz 8GB
EVGA GeForce GTX 470 1280MB PhysX CUDA (SLI in the future when I can pay for it)
WD Caviar® Black 1TB 3,5", SATA 6 Gb/s

Still think that it's enough?
Click to expand...

Yes, it'll be fine, but the PSU will be pushed under full load.
 
linkin

linkin

VIP Member
It should be fine if it's a quality brand 750w, which it is. A full system with 1 GTX 470 uses just under 400 watts, so a system with 2 of them should use maybe 550-650w with every component under 100% usage.

The corsair should manage that fine
 
Bodaggit23

Bodaggit23

Active Member
fastdude said:
The antec calculator is outdated, BTW
Click to expand...

Thanks for the double post. :confused:

Even an outdated PSU Calculator (not sure why you think it is)
will be more accurate than your guess "sure, it will be fine".

If you have something better, post it. If not, don't.
 
linkin

linkin

VIP Member
Fans use minimal power as well. Like 0.5A per fan. If plugged into the motherboard they use the +5v rail, if molex then +12v
 
Drenlin

Drenlin

Active Member
For modern systems, you can add up the TDP of all graphics cards and your CPU, add 100W, and you'll have a ballpark estimate of your power requirements. Add 150W is you're overclocking anything. (Note, by "power requirements", I'm referring to how much power yyour system will use, not what wattage PSU you should get.)

In your case, with no overclocking, your rig would probably even run well on a good quality 650W unit...so a 750W one is fine.
 
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