Powering 8800 GT in SLI

Hello,

I'm just a tad new to the 'build it yourself PC' scene, and I'm a bit confused as to how to power my dual 8800 GTs.

EVGA's website recommends 22Amps on the +12 volt rail, or 24 in sli mode. Is that total, or each card in SLI mode?

Also, how do rails work? I can't find almost any PSU that has more than 20A's in any single +12V rail, how am I going to power both cards without dropping a lot of money.
9 answers Last reply
More about powering 8800
  1. The amps is for the whole system, not just the cards. They are looking for the 24amps on the combined +12v rails. Usually there is a sticker on the PSU that lists watts and amps to each rail. If you find the watts supplied to the +12v rail, divide that by 12 to get your amp rating. What PSUs are you looking at?
  2. Cooler Master eXtreme Power RP-600-PCAR/PCAP NG

    http://forums.guru3d.com/showthread.php?t=205763

    I'd look some more, just my opinion.
  3. jonnyguru did a review on that and it turned out to be a 500 watt psu.
    As long as you dont have a dozen drives and watercooling this would work ;
    http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=10006757
  4. I wouldn't do anything with a decent brand and 550-600W. I don't skimp on power suppies either should you
  5. delluser1 said:
    jonnyguru did a review on that and it turned out to be a 500 watt psu.
    As long as you dont have a dozen drives and watercooling this would work ;
    http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=10006757



    That PSU says it only has one 6 pin PCI-E connection. I'd need 2.
  6. itotallybelieveyou said:
    I wouldn't do anything with a decent brand and 550-600W. I don't skimp on power suppies either should you


    But I'm looking to purchase a powersupply I need for my system, not one with oodles of power that rapes in the power.
  7. Veralix said:
    That PSU says it only has one 6 pin PCI-E connection. I'd need 2.


    It also has a 6+2 8pin PCI-E connector, this is clearer
    http://www.corsairmicro.com/products/vx.aspx
  8. I would say get this one. I have this one and am very satisfied and impressed. Good price, great company, plenty of power to cover you for the next 5 years of upgrades, and plenty of rails and options and I bet you will never run out.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817341002&Tpk=700w%2bOCZ
Ask a new question

Read More

Graphics Cards SLI Power Graphics Product