Sign in with
Sign up | Sign in
Your question

What power supply is recommended for the Radeon 5770

Last response: in Graphics & Displays
Share
May 22, 2011 6:07:15 AM

Hello, can anyone tell me if a 480w PSU will run the Radeon 5770 HD without an issue?
a b ) Power supply
May 22, 2011 6:09:54 AM

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?
m
0
l
May 22, 2011 6:59:31 AM

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.
m
0
l
Related resources
May 22, 2011 3:14:43 PM

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=N82E168...

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=N82E168...
m
0
l
May 22, 2011 5:48:48 PM

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. :( 
m
0
l
!