Determine the Quality of PSU

[U|tim4T3z]

How to determine the quality of PSU? Weight? or else?

[mook]

I would probably say in this order:

1. Variances (Percentage of swing on rails either way)
2. Rails and amperage.
3. Weight

Oh, and you can stick price in there somewhere too :D

[larrymoencurly]

Do you mean something that can be checked in the store?

How about the ratio of the combined power to the total power? I noticed that for some some cheap 400W PSUs it's only 50%, making them weaker than the best 300W PSUs.

I think that for PSUs of a given power rating, the size of that transformer between the two heatsinks may be a good indicator of quality, and I recently noticed that the cheap, wierd brand 500W PSUs at Fry's had transformers as small as the one in my best 300W. But I don't know what frequencies they used, and higher lets a transformer be smaller. My 300W runs at 95 KHz while most PSUs use 60 KHz.

[repo man11]

This sticky has a good way to check http://forum.oc-forums.com/vb/showthread.php?s=&threadid=62822