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Antec 750w True Power enough for 580 SLI? - Page 3

post #21 of 30
The Antec True Power is a top quality 750w unit, it will run SLI GTX580, however it will be close to the limit with overclocking.

If I were you, I would go for another GTX570 instead, SLI GTX570 is more than enough @ 1080P.
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post #22 of 30
Quote:
Originally Posted by LivingChampion View Post
How much worse would a 570 SLI run at 1080p? I'm probably staying at this resolution for a long time.
Please don't reccomend a single card set up, I've been really thinking of SLI for quite some time.
My Crossfire HD4870s will max 99% of games at 1080p. Only games that I can't are Crysis and Metro 2033, and in those I just have to lower the AA and AF settings, and maybe lower lighting quality a notch.

Even counting for the extra load that DX11 will add, dual GTX560s or HD6950s would be more than enough for 60fps at 1080p in virtually any game.
post #23 of 30
According to this site, http://www.bit-tech.net/hardware/gra...x-580-review/8, GTX 580 uses 363W at load... that's about 726 for 2 of them.
This other site, http://www.hardwarecanucks.com/forum...review-21.html, measured 395W for one at load.
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post #24 of 30
Please use basic graph reading skills.


Peak load: Total system power consumption
post #25 of 30
I would recommend keeping your GTX 570 and picking one up down the road once you can't turn up the eye-candy all the way.

1920x1080 isn't really that demanding of a resolution. My GTX 460 1GB maxed out almost every game I tried to play.

But to answer your question: Yes, your power supply would be enough to handle 2 GTX 580's in SLI with a small overclock on both gpu's and your cpu.
    
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post #26 of 30
hardwaresecrets said antec could have labelled the 750w true power a 900w unit but didn't because effciency drops to 79%... which is still very good but that 80+ rating is worth its weight in gold when it comes to selling PSUs.

I would be comfortable running 580s in SLI.
Edited by sexybastard - 3/11/11 at 6:57pm
post #27 of 30
Quote:
Originally Posted by sexybastard View Post
hardwaresecrets said antec could have labelled the 750w true power a 900w unit but didn't because effciency drops to 79%... which is still very good but that 80+ rating is worth its weight in gold when it comes to selling PSUs.

I would be comfortable running 580s in SLI.
Same goes for Corsair750TX......
http://www.hardwaresecrets.com/artic...y-Review/505/8
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post #28 of 30
Quote:
Originally Posted by sexybastard View Post
hardwaresecrets said antec could have labelled the 750w true power a 900w unit but didn't because effciency drops to 79%... which is still very good but that 80+ rating is worth its weight in gold when it comes to selling PSUs.

I would be comfortable running 580s in SLI.
Efficiency isn't the only reason. It's labeled a 750w because that's what it does continuously. Peak wattage means nothing.

Overrating an otherwise good PSU can quickly turn it into a sub-par/average one.
Edited by GameBoy - 3/11/11 at 7:24pm
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post #29 of 30
Thread Starter 
Quote:
Originally Posted by sexybastard View Post
hardwaresecrets said antec could have labelled the 750w true power a 900w unit but didn't because effciency drops to 79%... which is still very good but that 80+ rating is worth its weight in gold when it comes to selling PSUs.

I would be comfortable running 580s in SLI.
Pretty much guarantees it works huh.
Quote:
Originally Posted by RobotDevil666 View Post
I don't ... they are bone stock.
Why don't you wanna try? I'm sure your GPU's fine since theres a power supply shut off mechanism which operates when you're system's overload.
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post #30 of 30
Thread Starter 
What do you guys think of this power supply?
HCG-900
http://store.antec.com/Product/power...5-23890-8.aspx
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