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Power Requirements for SLI and OC'ing

Last response: in Graphics & Displays
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November 9, 2010 7:47:27 PM

Hey guys,

I am currently running an i7 930 and a GTX 470 on an Ultra LSP 750W power supply. I purchased a 9800GTX+ for PhysX and realized that my PSU couldn't push both cards (received boot problems). I also plan to get another GTX 470 for SLI, OC my i7 to atleast 4.2Ghz and still want to include that 9800GTX+ so I was wondering how much wattage should I look for on a new power supply as well as Amps on the +12V rail. Please consider that when OC'ing my CPU I will be buying a high end CPU cooler as well.
I was looking at the Corsair HX1000W PSU but I don't know if that would be enough or overkill. I was hoping to not spend more than $250 on this unit.

Current Specs:
Motherboard: EVGA X58 SLI LE
CPU: Intel i7 930
RAM: 6GB G.Skill Ripjaws 1600Mhz
HDD: 2 500GB Seagate Barracuda, 1 750GB Seagate Barracuda
Optical Drives: 2 Samsung Super-multi Drives
Case: Cooler Master HAF 932
GPU: EVGA GTX 470
PSU: Ultra LSP 750

Thanks.
a c 235 U Graphics card
November 9, 2010 7:48:36 PM

the corsair is an excellent choice and will have plenty of power for your needs
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a b U Graphics card
November 9, 2010 7:49:36 PM

Well, you seem like a man with cash to burn, why not go for the biggest PSU you can find? It will be a very sturdy investment for future upgrades!
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November 10, 2010 12:31:43 PM

i dont think everyone wants to spend their MAX amount lol.........

most people ocme here for budget advice i wouldnt be suprised if he was the same
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November 12, 2010 3:07:10 AM

Like I said, not wanting to spend more than $250 on this unit.
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November 12, 2010 3:25:37 AM

why dont u go with this coolermaster 1000w on sale for $169.99

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

its cheaper than the corsair and its a 80 plus bronze which will be more efficient. this has more power than u need and will also be good for future upgrades.

it has 80 amps on the 12v which sould be good for you rig
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November 12, 2010 3:27:15 AM

Thanks for the suggestion, I'll definitely look at that one too.
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!