what is a "standard PSU"?
if you mean a 80+ PSU, that's not rated 80+bronze or higher --- technically it depends.
the bronze/silver/gold standard doesn't really tell you whether a PSU is good -- it only is a measurement of efficiency. a 80+ PSU will waste twice as much power as a 80+ Gold PSU when transforming your 1150/230V input to a 12V output. Doesn't mean it's a good unit though.
however, especially with Platinum/Titanium units, many are very solid. 80+ white has been outdated for a while now, so I'm inclined to say most PSUs that are not at least rated for 80+ bronze are rather poor (and so are many 80+bronze)
what is the PSU in question?