what size psu for sli build

Z

zeroo

New Member
Hi, ok i almost have all the parts to make my gaming pc. The MB is an ASUS M3N-HT Deluxe, Pro is an AMD Phenom 2 quad 3GHZ 940 AM2+, 8 gig DDR2 ram and and 2 GTX 275 looking to add a third at a later date (maybe).
I would like advice on what size SLI psu to go for.
Thanks for any help.
 
Well the first thing I have to say is you should get 2 4890's instead. They are cheaper and preform better then the GTX 275. Honstally I would get a 5870 which eaisly beats 2 GTX 275 or 2 4890's.

Anyways I would say you need a good 650watt or better. I would go with a PC Power and cooling 750w silencer. That thing is a beast it will do triple SLI with 3 GTX 285's from what I have heard.
 
Fatback said:
Well the first thing I have to say is you should get 2 4890's instead. They are cheaper and preform better then the GTX 275. Honstally I would get a 5870 which eaisly beats 2 GTX 275 or 2 4890's.

Anyways I would say you need a good 650watt or better. I would go with a PC Power and cooling 750w silencer. That thing is a beast it will do triple SLI with 3 GTX 285's from what I have heard.
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The MB supports SLI not crossfire, i was thinking about two 4890's. I put a post on here asking advice and i was told the MB will not support C/F. And i wanted to have two cards, so nvidia it was. Maybe my next build i'll have ATI's.
Thanks vv much for youe advice
 
zeroo said:
The MB supports SLI not crossfire, i was thinking about two 4890's. I put a post on here asking advice and i was told the MB will not support C/F. And i wanted to have two cards, so nvidia it was. Maybe my next build i'll have ATI's.
Thanks vv much for youe advice
Click to expand...

So you already have the board my bad. I though you where doing a new build. Now that I think about it I remember your other post.
 
Under full load you will need at least 60A (the cards will take over 40A) on the 12 V rail so a 650 W will be insufficient.
 
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