Like most Enermax PSUs, the Revolution X't 630 W suffers from the same problem as all others—namely, its stiff price, which greatly affects its price/performance ratio. This PSU failed to impress me mainly because of its not-so-good ripple suppression, and I admit that I am very sensitive on ripple matters. Enermax has the required know-how to restrict it, so I can't overlook this area—I expected much more from them. Voltage regulation, on the other hand, was good, especially on the +12V rail, the most important rail of all, and efficiency throughout the entire load range was very good considering the rather plain platform this PSU uses. The unit even proved to be highly tolerant to very high ambient temperatures, which is a big plus since I have seen many PSUs die in my twenty years of work as an electronics engineer because their components couldn't handle high operating temperatures. Truth be told, you have to load PSUs up in extreme conditions well above 40°C ambient if you really want to test a PSU. Only if it survives can you really be sure that its platform is reliable enough to cope with tough conditions. Finally, during my noise testing, I noticed that having the PSU's fan facing downward makes the fan's blades touch the top grille, which produces a ton of noise and disrupts the fan's proper operation. I easily managed to overcome this problem by using four spacers to increase the distance between the fan and the enclosure, but such a fix isn't an option for the end user since it voids the warranty. I immediately contacted Enermax and was informed that they are already aware of this problem which will be fixed before the PSU hits retail shelves. As it seems, only the review samples, which are usually of a pre-production batch, were affected, so you won't have to worry about this finding of mine. Enermax has a very good name and to spoil it with such minor problems would be silly, so I am pretty sure that none of their retail units will suffer this particular problem.

To wrap up, the two main problems I spotted were the increased ripple on all rails and the high price Enermax asks for this unit. Since the first takes improvements to the design, Enermax could at least solve the second by lowering the price by 20 or more bucks, which would allow the PSU to meet the competition more effectively. Admittedly, the good thing about Enermax units is that they are very reliable and trouble proof to problems that tend to torment the competition, like coil-whine. This product will hopefully carry that tradition forward as a recompense to the people investing in it.