The FSP Aurum's 750W competitiveness is crippled by its high price which puts it in the same price group with very strong opponents, like the Corsair AX750,
NZXT HALE90 750W, and Seasonic X-750. With such competition you can imagine things are pretty tough for the AU-750M, especially since it didn't set new performance standards during our tests. It may have high efficiency and fairly good ripple/noise suppression but voltage regulation at +12V and 3.3V is loose and its performance at Crossload tests was terrible. When we pulled 60A from +12V during the CL2 test, this rail's voltage dropped dangerously low. In my opinion FSP should take a look at this matter and find a solution for the poor performance at Cross Load tests. Load on the rails won't be equally balanced in any system, so this improvement would have a positive effect. Also I think that the PSU needs an urgent price revision, in order to make it much more competitive.
With the current price tag and the performance we saw at full load and Cross Load tests I simply cannot recommend AU-750M as a good buy. If FSP decides to offer it at a much lower price, around $110-$120, then things would be much more different and I would have no problem recommending it to any user who seeks for a reliable middle-wattage PSU to cover his needs.