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Originally Posted by edisleado  How can you tell it's actually only a 750W PSU from the label? |
Because if you look at the label, it shows the maximum combined output of the PSU to be 750W, and then 850W is listed as the "peak power", which is meaningless. The continuous rating is what matters, and that PSU is really a 750W.
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Originally Posted by MarkOne What is this habit to suggest a less power full PSU than the OP ask.. 
what about if later he want to add a second PSU, other Optical drive , etc.....he will have to change PSU again...  I don't see the need to suggest a lower one, when someone is already commit to buy a bigger one. PSU also produce more noise ( not the one you ear, electronic one ) , ripple and what ever electronic garbage, when they are use near full capacity . |
Why would I recommend something to him that he doesn't need? Then he would just be wasting his money for no reason.
PSUs do generally produce more ripple at higher load (I say generally because there are exceptions to this), but that doesn't matter as long as it is still in spec. And I would never recommend a PSU that cannot output its full rated power while maintaining ripple low enough to stay within the ATX spec.