4850x2 on 650w psu?

I am planning t upgrade my gpu to 4850x2 in Xfire wit this psu: http://www.ewiz.com/detail.php?name=PS-GX650W&title=Cooler-Master-GX-Series-RS650-ACAAE3-US-650W-ATX-12V-SLI-Power-Supply

Will it supply enough power to support xfire??

mobo: GIGABYTE GA-MA785GT-UD3H
11 answers Last reply
More about 4850x2 650w
  1. I'd avoid that PSU if its like its 750W brother.

    http://www.hardwaresecrets.com/article/917

    Try buying one from a real good brand. 650W should be ok, you just need a better one.
  2. Ia m getting mixed answers here. Anyone else supports any of the two above??
  3. the +12V@52A
    you will be fine with that
    i say go for it
  4. From your site and in the $80-90 range, I would recommend the Antec Earthwatts 650w.
    It is a high quality unit and will have no issues with your system.
  5. outlw6669 said:
    From your site and in the $80-90 range, I would recommend the Antec Earthwatts 650w.
    It is a high quality unit and will have no issues with your system.



    The issue i have with it is that it only ha 22A on each 12v rail.
    According to my research i need a psu with at least 30A on the 12v rail if i am planning to ever use X-fire.

    You agree?
  6. Not at all ;)
    If you look at how the +12V rails are allocated, you find that +12V3 is dedicated to the two PCIe power connectors.
    As there are only one 8 pin (100W) and one 6 pin (75W) PCIe power connector available, only 15A (175W/12V = 14.5833A) is required from this rail.
    The 25A provided is more than enough with a little extra to spare.
    Combine there are 45A (540W/12V) avaliable accross the +12V rails.

    You can locate a good review of the EW650 Here.
    From your sites limited options it is one of the best, certainly in your price range.
  7. I have no idea what you just said, all those numbers just messed up my head.
  8. :lol:

    In short, it will work just fine :)
  9. outlw6669 said:
    :lol:

    In short, it will work just fine :)



    ohh.... Right! :lol: :lol:

    Thanks
  10. Quote:
    dude omg its enough. 750W ROFL??? Even HD 5970 only need 650W.


    I wasn't suggesting he get the 750. I said if the 650W is built the same as the 750W, its not a good PSU like you told him it was.

    I agree with the EA650. 650W, and its a good unit unlike the Coolermaster PSU. Should work just fine.
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