What power supply is recommended for the Radeon 5770

Hello, can anyone tell me if a 480w PSU will run the Radeon 5770 HD without an issue?
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  1. Statistically it should be fine. But it depends on the quality of the PSU. We need to know more than "480w". What is the model of the PSU exactly?
  2. A 5770 consumes about 9-10 Amps from a 12 rail, a dual core CPU eats up another 5 AMps. Another 2-3 Amps for fans and such, so as long as your PSU has at least 18A you will be ok.

    But I recoomand only pushing PSU to %50-60 as this keeps the heat down and increase longevity and efficiency. IN that case you want soething around 35-36A on the 12V rail, so a good 420-430W PSU will do just fine.
  3. Helltech said:
    Statistically it should be fine. But it depends on the quality of the PSU. We need to know more than "480w". What is the model of the PSU exactly?


    This is the computer the card will be going in:

    http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7194935&sku=I455-90000
  4. That sheds some light on the issue. COmpanies like Ibuypower and cyberpower will shamelessly include garbage non-name PSU with thier PC as standard to cut costs. These power supplies are as cheap as they come, I pretty sure that the 480W rating is fake as well (most of them are 300W CPU that have been re-branded).

    So not only do I think you might run into problems with that PSU, it might even be a danger to the rest of your computer (and the PC company also has lackluster warranty support).

    Honestly I would throw out the standard PSU and put in something good in there, like 550+ watt unit from Corsair or Antec.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371044

    something like that will be able to power anything short of 590 GTX or a 6990HD

    If money is really short, this PSU will be abel to power your system + 5770 no problems and its very cheap after rebate+promotion.
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027
  5. So is this computer even worth buying? I thought iBuypower was a decent brand to buy from, but your comments worry me a bit. For the price I thought this computer was a great deal. :(
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