We have one good and one bad news. The good news is that ASUS P-50GA can really deliver 500 W at 45º C. The bad news is that it presents low efficiency, below 80% almost all times, and this explains why this power supply isn’t 80 Plus-certified.

Even though it won’t burn or explode if you try to pull its labeled power – in fact we could pull up to 687 W from it (with a lousy 69.5% efficiency, however) – wattage isn’t everything. ASUS P-50GA will work fine, but we can’t recommend a power supply that can’t deliver at least 80% efficiency, since there are far better options on the market.

We are really disappointed by this power supply; we expected more from a product carrying the ASUS brand. This is the living proof that one company good at one segment may not be so got at another.