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Antec HCG-750 + GTX 570 SLI

post #1 of 7
Thread Starter 
Looking to upgrade to GTX 570 SLI. Searched and can't find a definitive answer, I think I'm good but you can never be too careful with power supplies. I know 750w is generally good for GTX 570 SLI and the HCG-750 is a quality PSU but I learned long ago it's never quite that simple. HCG-750 has quad 40A +12V Rails and the minimum recommended for the GTX 570 is 38A/rail. Not sure how that translates to SLI or multiple rails.

Thanks for the help.
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i5-750 @ 4.0GHz eVGA P55 SLI 2 x GTX 570 Classified 900/1800/2000 2 x 4GB G.Skill Ripjaws X Series 1600MHz 
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Gaming
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i5-750 @ 4.0GHz eVGA P55 SLI 2 x GTX 570 Classified 900/1800/2000 2 x 4GB G.Skill Ripjaws X Series 1600MHz 
PowerCase
Antec HCG 750W Antec P183 
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post #2 of 7
You're fine with 750w even with a little overclocking.

As for the rails the cards will be on separate rails so you will be fine.

Edit: Don't touch the voltage when overclocking...
I is bad@naming
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I is bad@naming
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Up and running!!
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post #3 of 7
That psu will be fine for your 570's. You will also have some headroom to overclock.
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post #4 of 7
Thread Starter 
Thanks guys. Is the only way to know when I've run out of headroom instability?
Gaming
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CPUMotherboardGraphicsRAM
i5-750 @ 4.0GHz eVGA P55 SLI 2 x GTX 570 Classified 900/1800/2000 2 x 4GB G.Skill Ripjaws X Series 1600MHz 
PowerCase
Antec HCG 750W Antec P183 
  hide details  
Reply
Gaming
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 @ 4.0GHz eVGA P55 SLI 2 x GTX 570 Classified 900/1800/2000 2 x 4GB G.Skill Ripjaws X Series 1600MHz 
PowerCase
Antec HCG 750W Antec P183 
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Reply
post #5 of 7
Quote:
Originally Posted by Jarobata View Post
Thanks guys. Is the only way to know when I've run out of headroom instability?
PSU fan will have a whining noise to it and it will be very loud and or it will shut itself off.

Also crappy FPS have happened to me before when my psu was trying to hard. lol



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post #6 of 7
Quote:
Originally Posted by Jarobata View Post
Thanks guys. Is the only way to know when I've run out of headroom instability?
Your psu will just shut your computer down. Safety mechanism

Also 38 amps is for the whole system. You have more enough power in that psu for 570 sli, and an OC to boot.
    
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by MrTOOSHORT View Post
Your psu will just shut your computer down. Safety mechanism

Also 38 amps is for the whole system. You have more enough power in that psu for 570 sli, and an OC to boot.
Excellent, thanks again guys.
Gaming
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 @ 4.0GHz eVGA P55 SLI 2 x GTX 570 Classified 900/1800/2000 2 x 4GB G.Skill Ripjaws X Series 1600MHz 
PowerCase
Antec HCG 750W Antec P183 
  hide details  
Reply
Gaming
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5-750 @ 4.0GHz eVGA P55 SLI 2 x GTX 570 Classified 900/1800/2000 2 x 4GB G.Skill Ripjaws X Series 1600MHz 
PowerCase
Antec HCG 750W Antec P183 
  hide details  
Reply
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