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Corsair AX1200 vs Corsair AX850 for GTX580 SLI

post #1 of 14
Thread Starter 
I'm building a new rig, and have just about decided on hardware. The only thing which still bugs me is the power supply.
I'll be running a 2600k on an ASRock P67 board, together with 2 GTX 580 cards and three hard drives.
At first, I wanted to go for the AX1200 by Corsair. However, the shop I ordered at does not have it in stock and is quite unsure about a delivery date. They have the AX850 in stock, which would have been my second choice.
However, I'm not sure if the AX850 will be as efficient as the 1200 is, or will last me as long. I'm not exactly planning on adding something power hungry in the near future, but you never know...
What would you do? A shop relatively near me has the 1200 in stock, but of course it's still more expensive than the 850.
PS: the PSU has to be modular.
Edited by KriVa - 10/3/11 at 10:41am
Higgie
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post #2 of 14
The AX850 will power your 580's fine. It is a top PSU.
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post #3 of 14
The AX850 is top notch and will easily suffice for your system, so don't worry about it. There's no reason the AX1200 would last longer.
post #4 of 14
Thread Starter 
Damn! Talk about fast reply's!
Thanks guys, that's all I needed to know.
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post #5 of 14
According to Guru3d, a Core i7 965 / X58 based and overclocked to 3.75 GHz with GTX580 SLI draws 719 watts from the wall.

850 is sufficient, especially since it will be a Corsair.

http://www.guru3d.com/article/geforce-gtx-580-sli-review/14
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post #6 of 14
The 850 is a wonderful unit. It powers my two powerhungry 480's with ease smile.gif
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post #7 of 14
Your fine. Its also not 850w you could get a little more aka Peak Power, but vs. saving a $40-60 dollars. Think of it as an investment.

Since people usually swap out Mobo/GPUs often but a good PSU will last you a long time.

AX1200 or AX850 your good to go. Also be sure to check this photo I made last night to use as reference when you sleeve your cables.

Overclocl-1.jpg
    
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post #8 of 14
i use this psu in my gaming pc and i love it , its also quiet as hell

http://www.coolermaster.com/product.php?product_id=6663
    
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post #9 of 14
Quote:
Originally Posted by Jingiko;15167841 
[snip]

huh?
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post #10 of 14
Quote:
Originally Posted by kremtok;15167907 
huh?

I was stating that just because the PSU is rated for 850watts doesn't meant after 850watts it'll stop providing power.

The OP also said that he's not expecting to upgrade anything beyond 850watts yet is concerned if he will need the additional 350watts in the future, and all PSUs are investments you can swap out mobo/gpu etc to keep up with current tech but a PSU you can keep.


As for the photo its an AX1200(similar to AX750/850 just fewer plug outlets) which Im assuming he wanted modular so he can sleeve his cables. If not then disregard the photo.
    
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