PSU 400w, 10 amps per 12v rail
- Thread starter Regor245
- Start date
Solution
- Sep 7, 2013
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10 amps on the 12v rails is not enough for a Radeon 6670. You need a PSU with at least 18 amps on the 12v rails, that's just as important as the PSU wattage (if not more so).
13thmonkey
Titan
- Jan 10, 2006
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often on dual rail you might only get perhaps 80% of each rail in total. So 20 amps at 12V is 240W, so it can give you 240W of useful power, 80% of that is around 220W. That's assuming it works as advertised, lower quality PSU's might only deliver those 10amps under certain circumstances, like 30C, and also might not even manage to reach the 10amps advertised.
So at an optimistic 220W I'd say you were just about safe... if it is not as-advertised (not uncommon on cheap supplies), or if it is as advertised but only under specially controlled conditions, then you might only be getting stable 180W or less.
My gut feel is that you are on borrowed time with that PSU and it will fail, soon, and potentially taking out other components.
So at an optimistic 220W I'd say you were just about safe... if it is not as-advertised (not uncommon on cheap supplies), or if it is as advertised but only under specially controlled conditions, then you might only be getting stable 180W or less.
My gut feel is that you are on borrowed time with that PSU and it will fail, soon, and potentially taking out other components.
13thmonkey
Titan
- Jan 10, 2006
- 24,798
- 350
- 75,790
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