| Cooler Master Hyper 612 PWM Heatsink |  |
| Reviews - Featured Reviews: Cooling | |
| Written by David Ramsey | |
| Wednesday, 27 July 2011 | |
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Closer Look: Cooler Master Hyper 612Cooler Master's box strikes a nice balance, showing you a photo of the cooler and the sockets it can accommodate. The "PWM" lets you know that the fan's speed can be controlled directly by your motherboard, a nice touch I wish more coolers would use. 
Inside the box are the cooler and its single fan, along with the mounting brackets for Intel and AMD processors, a small tube of thermal interface material, and a socket to help install the nuts that will hold the cooler on. The two black plastic items at the lower left of this image are mounts included for another fan you can optionally install on the back of the cooler.
There are 45 closely spaced aluminum fins which are perforated by six 6mm copper heat pipes. A single Cooler Master 120mm fan is clipped onto the front of the heat sink. This design is similar to the existing Hyper 212 cooler; the major difference is that the heat pipes run front-to-back, instead of side-to-side as they do in the 212.
Looking at the back of the cooler, we can see the 45 fins and the six copper heat pipes; there's also a small secondary set of fins fixed directly to the heat sink base, under the main cooling fin array.
With its fan removed, the symmetrical design of the heat sink is evident. The angled black top plates seem purely decorative.
Let's see how this heat sink is to mount...
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Comments
I'm pretty amazed that they get such good performance out of this unit, with the low mounting pressure they designed in.
A hint on the acetone - look for nail polish remover, which is frequently stocked by the female residents of the house.
I'm pretty sure that's wrong. Per Intel, accuracy of thermal measurements is greatest as you approach the Tcontrol point.
#download.intel.com/design/intarch/papers/322683.pdf
"PECI is most accurate near the maximum temperature (PROCHOT#) and it is
accurate enough for fan speed control in the TCONTROL range but it can be very inaccurate at low temperatures." pg 19
Same also applies for DTS. See page calibration and variance graphs on pg 8 and 9 of the document.
Given this, the thermal measurements are MORE accurate as you approach Tcontrol and less accurate and temps get lower. Therefor, the degree of accuracy is not constant, but rather temperature dependent.
"Although each processors DTS is factory calibrated, the accuracy of the DTS will vary from part to part and may also vary slightly with temperature and voltage."
#download.intel.com/design/processor/designex/324644.pdf
I was a little put off by all that. So many people said oh it runs cool it runs cool .. you can hit 4.4G with the stock fan. Sure.. you can but it certainly won't run cool.
Anyway.. overall a great review.