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This 550w enough to power a gtx 580?

post #1 of 21
Thread Starter 
well since 580s on here are selling from anywhere from 300-350$ used id really like to pick myself up one in 2-3 weeks and i was wondering if my psu can hold it until i can purchase myself a better psu.

here is the psu: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016
    
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post #2 of 21
you should be ok, although it depends on what other hardware you have, fill out your system specs and we can help further.
550W SHOULD be enough. for example, 550W powers my system without any hastle.

EDIT: nvidia say you should have a minimum 600W PSU for the 580
Edited by catalyst - 3/25/12 at 4:37pm
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post #3 of 21
That PSU delivers 37A on the 12V rail. The GTX 580 needs 25A on the 12V rail. I'd say your PSU can reliably put over 25A, so you do not need to upgrade your PSU. The amount of watts a PSU delivers is largely irrelevant.

http://www.xbitlabs.com/articles/graphics/display/geforce-gtx-580_5.html#sect0
post #4 of 21
Thread Starter 
the rest of my specs is in my sig its a 960t, 1 hdd (its mechanical not sure if 7200 or 5400 as i pulled it out of a old laptop) 4gb ram, and a dvd drive and thats it but thanks for reassuring me guys! thumb.gif
    
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post #5 of 21
Edit: Never mind. Ignore this post.
Edited by tahayassen - 3/26/12 at 3:49am
post #6 of 21
Don't bother with an upgrade unless you absolutely need one.

That unit should be absolutely fine.
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post #7 of 21
Quote:
Originally Posted by tahayassen View Post

That PSU delivers 37A on the 12V rail. The GTX 580 needs 25A on the 12V rail. I'd say your PSU can reliably put over 25A, so you do not need to upgrade your PSU. The amount of watts a PSU delivers is largely irrelevant.
http://www.xbitlabs.com/articles/graphics/display/geforce-gtx-580_5.html#sect0

25 amps on the 12v is 300 watts, a stock GTX 580 does not draw close to 300 watts on its own under gaming loads so this information is inaccurate.

Here is a chart with total system power consumption under gaming load for an idea of what to actually expect:

600

So just to ensure the OP, your PSU is fine.
post #8 of 21
Quote:
Originally Posted by bR0ken_pr0Jector View Post

25 amps on the 12v is 300 watts, a stock GTX 580 does not draw close to 300 watts on its own under gaming loads so this information is inaccurate.

Do you have any proof? If you read the link I posted, you would see the GTX 580 draws 24.3 amps (291.6 watts) when under load by OCCT: GPU Test.
Edited by tahayassen - 3/26/12 at 3:59am
post #9 of 21
You should read this thread:
http://www.overclock.net/t/1126863/real-world-power-usage-user-submitted-values/110
Quote:
2500k @ 4.6 A 1.32 -- P8Z68-V Pro -- (2) 1.5 Ram -- (1) GTX 580 -- (4) 1TB 7200 HD -- Seasonic X750 @ 87% Eff

Max Values;

IDLE: 116w -> 87% = 101 Watts
Prime95: 210w -> 87% = 183 Watts
Furmark @ Stock: 304w -> 87% = 264 Watts
Prime95 and Furmark: 378w -> = 324 Watts
Folding SMP: 191w -> 87% = 166 Watts
Folding SMP and GPU: 329w -> 87% = 286 Watts
SWTOR: 366w -> 87% = 318 Watts

That's quite some low power usage I think. I'll have my 580 here tomorrow and I'll be running it on a 600w psu. I'll let you know how it goes. Obviously yours will be quite different then my setup but those results by OCN user tats really shows some good numbers to me!
post #10 of 21
Also, take note of this,
Quote:
Originally Posted by jagz View Post

i7 2600k 3.7Ghz @ 1.23v. ASRock Extreme 3 Gen 3. (2) 1.65v Memory. 1 GTX 580 Lightning Xtreme @ 941MHz @ 1.113v.
1 HDD. 1 SSD. 1 Optical Drive. 1 LCD Fan Controller & Display. (9) Case Fans.
Sparkle 750w Gold Class @ 89% efficiency.
Idle: 106w / 89% = 94w
Folding@Home: 365w / 89% = 325w
Prime95 (Small FFTs): 192w / 89% = 171w
Prime & Furmark: 410w / 89% = 365w
Gaming (BF3): 365w / 89% = 325w
i7 2600k 4.6Ghz @ 1.30v. ASRock Extreme 3 Gen 3. (2) 1.65v Memory. 1 GTX 580 Lightning Xtreme @ 941MHz @ 1.113v.
1 HDD. 1 SSD. 1 Optical Drive. 1 LCD Fan Controller & Display. (9) Case Fans.
Sparkle 750w Gold Class @ 89% efficiency.
Idle: 112w / 89% = 99w
Folding@Home: 418w / 89% = 372w
Prime95 (Small FFTs): 250w / 89% = 222w
Prime & Furmark: 480w / 89% = 427w
Gaming (BF3): 395w / 89% = 351w

Hope that helps you out!
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