After nine whole pages is about time to conclude this review and give a final verdict to the Silent Pro M2 1000W. Let's start with the good news. Thanks to the topology used in the primary section (ACRF, Active Clamp Reset Forward), a topology usually met in Gold units, efficiency is close to Gold levels. Moreover, despite the manufacturer's claims that the max operating temperature is restricted to mere 40°C we found out that it can deliver its full power flawlessly even at over 47°C. This means that it can tolerate abuse and uses good quality components that operate without problems even at high ambient temperatures. Continuing with the positive aspects of this unit I have to mention the excellent ripple suppression on the minor rails (at +12V is decent), the flat modular cables that will help with cable management and the five year warranty that ensures a long peace of mind. Finally, as its name implies, at least at lower loads, the PSU is fairly quiet.

Now let's take a look at the not so great aspects of this unit. For sure voltage regulation is not its strong point, especially on the 3.3V rail. Also efficiency at very low loads is disappointing but a great part in this plays the 1kW capacity. Finally at higher loads and increased operating temperatures the cooling fan makes it presence well felt, however it doesn't produce an annoyingly loud noise. Also after fully dismantling the fan we discovered that it doesn't use a Hydro Dymamic bearing but a Hysint bearing, something not so advanced, which however is still much better than a sleeve bearing and about equal to double ball bearings.

To sum up, if this unit hits the stores with a price around $180, since usually MSRP is higher than the retail price, then its price/performance ratio will be really good since the PSU registered fairly good performance on all the tests I ran.

We received the following statement from Cooler Master regarding the fan: From Young Lin's response, the "HDB" is actually developed by some other brand and it's a patent design so the other fan vendors have to come up with different designs similar to HDB. This is because they need to go around with the patent. According to our understanding, the special of "HDB" is the oil storage function and the special formula of oil. So since Young Lin Tech uses something similar to the two aforementioned key elements, they call this fan HDB fan as well.