This is a great power supply. It can not only deliver its labeled power at 50º C, but you will be able to pull up to 870 W from it. Efficiency is one of the highlights from this product, achieving 84.5% efficiency at full load. With loads between 40% and 80% (between 260 W and 520 W) you will see efficiency between 85.6% and 86.4%. Only under light load (20%, i.e. 130 W) efficiency was "low", at 82.3%.

Voltage stability and noise and ripple levels were outstanding.

We were impressed by its low noise level and temperature. We thought that because it uses an 80-mm fan it would be noisy and would heat, but temperature was at the worst case only 5º C above room temperature and noise level only bothered when we pulled 650 W or more from it.

This is a flawless power supply. The only negative point we can think of is its price, higher than competing products. It is clearly targeted to users that want "the best". It deserves our Golden Award seal, however the savvy user may want to look for a product with a better cost/benefit ratio.