The good news about ASUS U-65GA is that it is better than the 500 W model (P-50GA) from the same brand (which is a product we don’t recommend), presenting high efficiency (especially if you pull between 40% and 60% from its labeled capacity, i.e., between 260 W and 390 W) and six SATA power connectors. Pulling 650 W from it efficiency drops below 80%, but since most users will not pull 650 W from it this is not a problem.

Voltage regulation was the highlight from U-65GA, with all voltages within 3% from their nominal values, i.e., closer to their nominal values than required, as the ATX specification allows voltages to be up to 5% from their nominal values. This includes -12 V, an output that usually doesn’t like to stay so close to its nominal value.

ASUS U-65GA can really deliver 650 W at 49º C and has its protections working fine, but it isn’t the best 650 W power supply around: ripple and noise although inside specs were higher than competing products and we think it would be better to have the two power connectors for video cards in separated cables.

It is an honest power supply for its price and will present an excellent performance if you put it to work between 260 W and 390 W; because of that we are giving it our Hardware Secrets Bronze Award.