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Just HOW hungry are SLI'd GTX 480's? - Page 2

post #11 of 27
3/23/12 at 1:18pm
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I've also had this PSU since 2008, and I've heard that PSU's lose a fair amount of their capacity over time...Could this inhibit its ability to support my system?

This is a great community. Hopefully I'll be able to give answers eventually.
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post #12 of 27
3/23/12 at 1:34pm
Quote:
Originally Posted by noseraker View Post

I've also had this PSU since 2008, and I've heard that PSU's lose a fair amount of their capacity over time...Could this inhibit its ability to support my system?
This is a great community. Hopefully I'll be able to give answers eventually.

As long as the unit is of good quality to start with and your foot hasn't been on the gas hard since 2008 (extreme 24/7 load) you should be good to go thumb.gif
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post #13 of 27
3/23/12 at 3:38pm
Im going to add to Dustin1's reply. With SLI gtx 470 @ 1.1 volts at 840 mhz my main rig (in sig) pulls 865 watts on my killa-a-watt meter while folding. Thats using a Corsair AX1200
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post #14 of 27
3/24/12 at 5:28am
yeah, and thats with a 4ghz nehalem AND in a really stressful scenario tongue.gif 850w is plentay
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post #15 of 27
3/24/12 at 5:33am
For the record:

i7-3960X and dual 580s with a Silverstone 1000W Silver Rated will draw 650w during Metro 2033.

480s draw a little more than that, so I wouldn't suggest anything below a 1000W silver for it, preferably even a 1250W Gold.
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post #16 of 27
3/24/12 at 5:58am
I have an Antec TK-750W and I have no problem running my two 480's and they are even overclocked a bit. call me idiotic but I heard this unit is actually rated for 950W, but yeah even when my system is maxed out my 750W runs my entire system smoothly. What I am saying is, even a quality 750W can run two 480s with no problems. thumb.gif

Edit:
I have been running this setup for a few months now with no hiccups.
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post #17 of 27
3/24/12 at 6:02am
Quote:
Originally Posted by Fateful_Ikkou View Post

I have an Antec TK-750W and I have no problem running my two 480's and they are even overclocked a bit. call me idiotic but I heard this unit is actually rated for 950W, but yeah even when my system is maxed out my 750W runs my entire system smoothly. What I am saying is, even a quality 750W can run two 480s with no problems. thumb.gif

Edit:
I have been running this setup for a few months now with no hiccups.

PSUs are a lot like cars.

A car that has a top speed of 80mph can easily do 70.
A car that has a top speed of 150mph can easily do 70 as well.

However, the first car will be near its limit, and if you keep going near that limit over long periods of time or frequently, it's going to break.
The second car will hit that 70 with ease, and have lots of room to grow and expand, not stressing the components.

So with a PSU, you want one that'll do it with ease and have room to spare. Ideally, if cash flow allows.
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post #18 of 27
3/24/12 at 6:04am
get a 850w or more PSU. look at my sig. I have a kill-a-watt meter and at full load it goes upto 1070w (prime and kombustor both at full load). my PSU can still handle it tho
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post #19 of 27
3/24/12 at 6:14am
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It's not the most efficient power supply (given it's age), but it will handle two of them easily. Just don't expect it to purr like a kitten with everything over-volted and stressed to 100%.

But why on Earth would you do that? tongue.gif

I've never pushed mine past 400w (I guess, I don't have a Kill-A-Watt), so I have faith in it enough to move it over to power a SB-E system, that will most likely hold one or two GTX 680's.

... on a slightly related note, it's nice and quiet isn't it thumb.gif
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post #20 of 27
3/24/12 at 6:59am
1 GTX 480 eats up around 317W at full load

get a 1000W PSU
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