Design and Functionality
Cooler Master Hyper N520 looks very interesting to say the least of it. It consists of a medium sized heatsink with the fans on both sides of it:
The fans are shifted from one another and work for air intake and exhaust:
The cooler weighs 688g and measures 122.4 x 102.5 x 141 mm:
Cooler Master Hyper N520 heatsink is covered with an aluminum shroud that holds two 92-mm fans:
The manufacturer most likely decided to shift the fans away from one another trying to eliminate the so-called “dead zones”, when some heatsink plates do not get cooled with the fan airflow (these zones are most often located right beneath the fan rotor).
Besides that, you should also check out five 6mm heatpipes that are positioned chequer-wise inside the heatsink. As we know, this heatpipe structure inside the heatsink improves heat distribution over the heatsink body:
If we remove the shroud with the fans, we can take a closer look at the heatsink:
It consists of 48 aluminum plates, each 0.45mm thick and spaced out at 1.8mm. You can notice that each heatsink plate has five slits in it. I suspect that they have been made to create turbulent airflow from the fans and increase the heat dissipation efficiency. The calculated effective heatsink surface measures 5,045sq.cm, which is very good for a mainstream cooler.
The heatpipes lie in special grooves cut out in the copper base plate:
We didn’t notice any traces of soldering, however, we know for a fact that Cooler Master has always used soldering technique instead of thermal glue to ensure proper contact between the base plate and cooler heatpipes. Looks like they have simply done it very carefully and neatly.
The base plate surface is very even:
It is also very well finished, although it is not quite mirror-like (not a must, of course, but a very attractive feature):
However, as I have already said, it is not an issue. Most importantly, the surface is even, which we can see from the thermal compound imprint on Cooler Master Hyper N520 base:
The heatsink holds two 92 x 92 x 25mm fans (Cooler Master Cooler Master A9225-18CB-3BN-L1 model):
The fans rotate with constant speed of 1800RPM. They create 3.8CFM airflow and should produce no more than 19dBA of noise. The claimed static pressure is at 3.24mmH2O (it must be the total pressure from both fans mentioned in the official specs). Rifle bearings used in these fans should last for 70,000 hours or about 7 years.