DeepCool PQ850M (850W) Power Supply Review

Efficiency

Despite the DeepCool PQ850M only being officially rated as 80-Plus Gold, the efficiency performance in our testing was hugely above and beyond that remit. It would be no exaggeration to say that this is very nearly borderline Platinum, and in some respects, nearly Titanium, which, if you’re not familiar with PSU efficiency ratings, is not only better but significantly harder to achieve.

So far, so really good!

PFC (Power Factor Correction)

Things continue to impress with the DeepCool PQ850M as the PFC results were, again, exceptionally impressive. Even the 20% load test, which for many top of the range power supplies usually dips down to around 0.8, the DeepCool PQ850M achieved a score of 0.908. With a 60-100% load average of around 0.97, the results shown here are much higher than we anticipated, and, on the whole, very good indeed!

Voltage Regulation

Consistency is King (or Queen if you prefer) for the DeepCool PQ850M as, throughout all of our load tests, this power supply provided us with amazingly tight results. The 12V, 5V, and 3.3V scores show incredibly small amounts of deviancy. – The only mild fly in the ointment was the -12V scores as they were shown to be overvolting slightly. Given the low importance of this rail, however, this is definitely nothing to worry about!