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4870 PSU requirements - Page 3

post #21 of 23
Quote:
Originally Posted by tommykl View Post
I ran a factory overclock 4870 on a 420watt PSU for about 1.5 yrs without any problems.
That doesn't mean it was fine
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post #22 of 23
Ran a 4870 on my CX400 and it ran beautifully, until it died (which was a design fault of the non-reference PCB of the card, not the PSU)
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post #23 of 23
Quote:
Originally Posted by PureOC Jim View Post
I would not use that PSU. The 12 volt rail has 28 amps and I believe you card has max draw of 24 amps. Factor in your other hardware and although it may work, using a PSU over 55% load will decrease the life. I am sure you will be far past 55% and this could lead to disaster up the road. Crossfire is out of the question. When looking at PSU's it is not always the wattage, it is the amps the rail(s) have. If you keep your avg. load under 55%, you will own a PSU to enjoy for many years with no worries. That said, I would not recommend that PSU period. The PSU is the last place to skimp.
50% Load Myth

The PSU is fine, period.
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