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Triple Sli GTX 580 3gb power supply recommendation. - Page 4

Poll Results: Triple SLI GTX 580 3gb 1000w (keep) or 1200w (upgrade).

 
  • 28% (13)
    Keep the 1000w psu.
  • 71% (33)
    Upgrade to a 1200w psu.
46 Total Votes  
post #31 of 61
Quote:
Originally Posted by GreekBostonBoy+ View Post
Corsair AX1200

The GTX 580's are power devourers. One would need about 430 Watts. 2x 860 watts. Also you are going to have everything else so that adds about 150 watts.

860
+
150
_____
1010. I don't know about your optical drives because they usually like to consume power. so if you have 1=about 35 watts. and the corsair ax1200 is a great quality psu with a great amount of watts.

PLEASE DON'T SHOW HATRED.

~Alex K.
Clock On!

Where did you get that one 580 draws over 400w?

With your flawed logic my current PSU should have up and died upon first 3D load.
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Black Sand
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post #32 of 61
Thread Starter 
Quote:
Originally Posted by mikeaj View Post
Well, with GTX 580s at a load like that, overclocked and similarly stressed, you would easily break 1000W DC from the PSU. 1115W at the wall with the HD 6970s wasn't quite 1000W DC.

As JonnyGuru's review shows, the OCZ ZX1000 can definitely hold its own.
http://www.jonnyguru.com/modules.php...Story&reid=238

However, if you get GTX 580s, I again reiterate that you may not want to stress them to the max possible. Gabe's review shows that the OCZ ZX850 behaved poorly when overloaded past 850W:
http://www.hardwaresecrets.com/artic...-Review/1204/8
Thanks, I've decided to play it safe and just upgrade since I don't want to be in the position of +$1500 worth of gpus dead. But at least its good to know if I end up getting them or not. +rep to you, and everyone else who made contributing posts.

Quote:
Originally Posted by blackbalt89 View Post
Where did you get that one 580 draws over 400w?

With your flawed logic my current PSU should have up and died upon first 3D load.
lol indeed,




I've been to the psu recommendations and seen Pheadrus' q&d calculator so I'm pretty good at judging some fundamental psu requirements. Its just that this debate is still split down the middle. But, I'll just go w/ my gut and better safe than sorry (<-tired old cliche, I know )!

btw, if any one is interested, my sig rig psu is in the f/s section
post #33 of 61
Antec 1200 hands down.
    
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post #34 of 61
Quote:
Originally Posted by wermad View Post
Thanks, I've decided to play it safe and just upgrade since I don't want to be in the position of +$1500 worth of gpus dead. But at least its good to know if I end up getting them or not. +rep to you, and everyone else who made contributing posts.



lol indeed,




I've been to the psu recommendations and seen Pheadrus' q&d calculator so I'm pretty good at judging some fundamental psu requirements. Its just that this debate is still split down the middle. But, I'll just go w/ my gut and better safe than sorry (<-tired old cliche, I know )!

btw, if any one is interested, my sig rig psu is in the f/s section
Go with whatever you feel is best for your upgrade path, and welcome back to the green team.
Black Sand
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Black Sand
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post #35 of 61
Quote:
Originally Posted by mikeaj View Post
Well, with GTX 580s at a load like that, overclocked and similarly stressed, you would easily break 1000W DC from the PSU. 1115W at the wall with the HD 6970s wasn't quite 1000W DC.

As JonnyGuru's review shows, the OCZ ZX1000 can definitely hold its own.
http://www.jonnyguru.com/modules.php...Story&reid=238

However, if you get GTX 580s, I again reiterate that you may not want to stress them to the max possible. Gabe's review shows that the OCZ ZX850 behaved poorly when overloaded past 850W:
http://www.hardwaresecrets.com/artic...-Review/1204/8

I beg to differ. You can run sli 580 on a quality 750w psu. You could even fold on them with no problems. You gotta keep in mind, even though his cpu is overclocked, it is still only a 32nm sandy bridge. They are far less power hungry.


Btw OP: that thread done by phaedrus is accurate. The original recommendations he has are for typical sandy bridge setups with overclocking headroom already factored in. Even though there is no tri-sli in his calculator thread, its not hard to estimate how much extra wattage is need for a third 580. He recommends 750w for sli 580, so an extra 250w should be enough for a third.

I think you will be fine on that 1000w psu

Hope this helps.
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post #36 of 61
Thread Starter 
poll time

If there is a chance I end up w/ this gpu setup and I still have my ocz psu, I shall do some testing and report back .

edit: btw, thanks for the input Alice, makes it harder to reach a conclusion now . We'll let the good ol' ocn poll provide more input
Edited by wermad - 7/28/11 at 11:30pm
post #37 of 61
Quote:
Originally Posted by AliceInChains View Post
I beg to differ. You can run sli 580 on a quality 750w psu. You could even fold on them with no problems. You gotta keep in mind, even though his cpu is overclocked, it is still only a 32nm sandy bridge. They are far less power hungry.


Btw OP: that thread done by phaedrus is accurate. The original recommendations he has are for typical sandy bridge setups with overclocking headroom already factored in. Even though there is no tri-sli in his calculator thread, its not hard to estimate how much extra wattage is need for a third 580. He recommends 750w for sli 580, so an extra 250w should be enough for a third.

I think you will be fine on that 1000w psu

Hope this helps.
Well, as I mentioned on the first page, as long as there are no worst-case-scenario stress tests involved, I think the ZX1000 would be plenty. In general I tend to side with the "that's enough power" crowd.

However, the OP already said he pulled 1115W from the wall with three HD 6970s, so at about 87% efficiency, that would be around 970W.

I think we can all agree that GTX 580s have the potential to pull a little more power than HD 6970s (with the +20% power cap)? If so, then surely that small difference might get him to break 1000W.

Techpowerup measures card consumption from the connectors and does the +20% for the max draw, so look here:
http://www.techpowerup.com/reviews/M...htning/21.html

I don't think it would necessarily be catastrophic...or realistic at all for normal usage, but if you want to have enough power at all times then I think a slight upgrade from 1000W is reasonable. If you're really drawing the max possible power, each GTX 580 should go above the 250W figure you mentioned.

Though honestly, since he's already got the ZX1000 and getting a new unit (1) costs money and (2) takes time to install, my suggestion would be just to not run FurMark...while running LinX. FurMark by itself should be fine.
Edited by mikeaj - 7/28/11 at 11:48pm
post #38 of 61
it's still antec hcp-1200 for me...having more headroom =less %load...pulling in on high loads decreases your psu's efficiency. and for our resident psu editor it IS THE LAMBORGINI of the psu.
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post #39 of 61
Thread Starter 
Quote:
Originally Posted by iDaryl View Post
it's still antec hcp-1200 for me...having more headroom =less %load...pulling in on high loads decreases your psu's efficiency. and for our resident psu editor it IS THE LAMBORGINI of the psu.
nice setup
post #40 of 61
id say go with a Corsair AX1200 just to be safe and the peace of mind that everything will work fine with no hassles.
    
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