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Old 02-19-11, 03:44 PM   #9
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Join Date: Aug 2006
Posts: 106
Default Re: Upgraded to GTX580 but can only get low resolution

Originally Posted by Licaon View Post
some say it needs a good 650W as minimum

and according to:
There exist 400 watt PSUs that can output more power than 600 watt PSUs and 525 watt PSUs that cannot output more power than 300 watt PSUs. Power rating really should not be described by a single number and even with multiple numbers, the manufacturers find plenty of ways to do absurd measurements to make them higher than they really should be.

To scale the numbers provided by SPCR, most 525 watt PSUs (i.e. those rated for maximum power at 25 degrees centigrade) cannot provide more than 171 watts at 50 degrees centigrade.
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