Enermax Tomahawk 500 W is a honest entry-level power supply that will please the user building an entry-level or mainstream PC and doesn’t want to spend a lot of money on a power supply. We could pull practically 550 W from it at high temperatures and its voltages were always within the expected range and noise and ripple levels were always ultra low.
The Efficiency from this power supply is a double-edged sword. At loads up to 200 W it presented a very high efficiency for an entry-level product, above 84%. But at higher loads from 400 W on efficiency was below 80%.