Cooler Master Hyper 6

Written by Randy Torio    Thursday, 08 July 2004 11:00
Article Index
Cooler Master Hyper 6
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
All Pages


We recently reviewed the TTIC NPH-2, which utilized a giant heat pipe design to assist in the cooling of a fin designed heatsink. As demonstrated by the TTIC heatsink, the efficient use of a heat pipe design allows enthusiasts to enjoy maximum cooling while keeping noise levels to a minimum.  However, what if a company decided to use even more heat pipes to ensure maximum cooling?  Well, it seems Cooler Master has already answered this question by releasing their latest and greatest Cooler Master Hyper 6 heatsink which utilizes six enormous heat pipes through an all copper design, hence the name Hyper "6." 

If there was one company that immediately comes to mind when thinking of any form of PC cooling, it would be Cooler Master.  They pretty much cover all aspects of PC cooling, from simple fans to watercooling.  They have been making heatsinks for quite some time now and their presence in CPU cooling has been acknowledged by most, if not all, PC users.  They experimented with heat pipes before and were successful with coolers such as the HHC and IHC series.  While these coolers performed well, they achieved this at the expense of high noise level.  Now they focus on an important aspect of cooling CPUs: quiet operation.  We will see how the Hyper 6 can achieve maximum cooling at minimal noise levels.


Heat Pipe design

While the TTIC NPH-2 review already described how a heat pipe works, Cooler Master has their own version of how it works on their website.  Here's an easy to understand diagram taken directly from their site.

In case you haven't noticed, there is actually liquid inside these heat pipes to transfer heat.  Poiuy described it best when equating it to a small radiator.



Hyper 6

The package was placed in a nice, easy to carry, "lunchbox" style box.  Cooler Master probably figured that consumers in retail stores would struggle carrying 2 pounds of pure copper, so they included a handle for your convenience.  The items itself were well protected by foam material.  The included items in the package are: the Hyper 6 heatsink, an 80mm Cooler Master fan with an attached rheostat for controlling fan speed and noise, two brackets (a PCI slot cover and a 3.5" bay cover) for your choice of a rheostat location, a backplate for your motherboard, a retention bracket that attaches to the backplate, thermal paste, an instruction manual, and all necessary mounting hardware.  Cooler Master leaves nothing forgotten for the consumer.

Notice how the illustrations on the box insinuate an overall theme for the heatsink: silence.  We'll see if this actually plays out in the testing results.  Here is another picture taken from their website, illustrating their dedication to silence.

The heatsink is comprised of six giant heat pipes which, at the bottom, are sandwiched in between a large rectangular copper plate and a small copper, 11-finned heatsink.  The heat pipes then extend out to be cooled by 27 ridged copper fins and are then protected by a stylish aluminum covering.  This covering can be considered a shroud which prevents air from escaping and directs air towards the inside of the heatsink.  Both sides of the heatsink have mounting holes for an 80mm fan on the shroud, which gives the user the option of one or two fans.  At the top of the shroud is a stylish engraved Cooler Master logo in addition to the topsides of the six heat pipes.  This is the visible side of the heatsink, so Cooler Master has not only catered to performance but also to looks. 

The bottom of the base was protected by a sticky blue film which, when removed, revealed an excellent lapping job by Cooler Master.  The base seemed precisely flat, evident in its mirror-like reflection.  Normally a flat lap job gives off a seamless, purely flat base, but the lap job on this heatsink has a radial-like reflection with a point in the middle as if it were lapped in a circular manner.  I'll try contacting Cooler Master to find out  how they did it.  Nonetheless, it is absolutely impressive.

Overall, this heatsink was aesthetically brilliant in its design as well as its lap job.



The Fan

The fan looks to be Cooler Master's patented Rifle sleeve bearing fans, which have been proven to give out quite a bit of air while keeping noise levels down.  Attached to the fan is a rheostat that can speed up or slow down the fan to adjust noise levels.  I have tested how this heatsink performs on both low and high.  The fan is attached to the PSU (at high RPMs it uses a maximum of 12v) via a Molex connector but also includes an rpm sensor for monitoring fan speed.

The specifications:

  • Fan Dimensions: 80 x 80 x 25mm
  • Fan Speed: 1800 - 3000 rpm
  • Fan Life Expectance: 30,000 hrs
  • Bearing Type: Sleeve Bearing
  • Voltage Rating: 6 - 12v
  • Noise Level: 21 ~ 34 dBA
  • Connector: 4 pin (power input), 3 pin (speed Detection)



Test Method

To test for ambient temperatures I used a CompuNurse that detected 25 degrees Celsius.  The temperatures of the CPU were taken with MBM on an Abit IS7.  I used Arctic Silver 5 and let each test settle for two hours (nearly not enough time for it to settle, but good enough just for testing purposes).  Testing was done in a Chieftec Dragon all aluminum case with 2 80mm intakes in the front, 2 80mm exhausts at the back, and all side panels off.  Prime95 was used for an hour to put the CPU at full load.

Actual installation can be quite cumbersome to the conventional user.  While the enthusiast may enjoy taking apart his computer, many dislike this idea after having cleanly routed wires within the computer.  This heatsink required the removal of the motherboard to install the recommended backplate and the retention plate.  You would think Cooler Master would make their heatsinks work with existing backplates.  Actually, upon closer inspection, the P4 retention plate seems to have the same dimensions as the Cooler Master plate; however, for Athlon64 users, the Cooler Master retention plate are not nearly the same dimensions as the Cooler Master plate. 

Initially, I wondered how this heatsink, so large in width, would ever fit on a motherboard.  Surprisingly it did, although some capacitors did have to be bent quite a little to ensure a snug fit.

I decided to opt for the PCI Slot cover to install the rheostat since the brushed metal finish did not match the plastic finish of the Chieftec case.

The clips are very easy to install.  It's just a matter of placing the flaps within the slits of the plastic retention plate, and then using the lever to clamp around the other side of the retention plate.  While it was a very tight fit, the use of metal on plastic to retain a 2 lb monster isn't enough for any user to ensure its positioning. Given the opportunity, I'd much rather use a 4 screw mounting method (such as Thermalright) to secure this massive piece of copper to my motherboard. 

The directions recommended that you install the heatsink first and then the fan.  However, this posed a few problems.  To mount the fan, you need install it sideways, which involves the removal of the graphics card or any PCI cards to have enough room to screw in the fan.  Another problem also occurred.  It was next to impossible to install a second fan with the PSU so close to the top of the heatsink.  I honestly don't see any reason why you should install the fans last.  To install a second fan you'd need to purchase or find another set of screws because Cooler Master only gives you one mounting set.  One thing to note is that Cooler Master recommends a "push" style direction of airflow.  Obviously you do not want it facing downwards as it will force heat onto the graphics card.  The only option is to face it upwards, which would work well for PSUs such as Cooler Master's new PSU that have an intake fan directly above the CPU zone.  Unfortunately, my PSU (a Sparkle FSP400) did not have such an intake.




Cooler Master claims its new heatsink is a silent heatsink, so I have matched it up against the tried and true Zalman CNPS7000-Cu.  This has been a popular choice among PC enthusiasts for its excellent cooling as well as utilizing Zalman's patented "silence" technology.  I will be comparing the Zalman also on a high and low setting in addition to comparing their noise levels.  One thing is for sure, the installation of the Zalman does not require removal of the motherboard and the fan is already attached to the heatsink, thus, this heatsink is much easier to install and weighs less.

Remember when Zalman first unveiled the CNPS7000 and how it towered over current heatsinks at the time?  It seems the tables have turned with the Hyper 6 making the Zalman heatsink look miniscule in comparison.



Test Setup and Results

Test Setup:

  • Pentium 2.4C overclocked to 2.8
  • Abit IS7
  • 512MB of Buffalo PC3700 (BH-5) at 2.8v
  • Radeon 9600XT
  • Sparkle FSP400 (400 watt)
  • Chieftec Aluminum Dragon




Conclusion and Thoughts

Here you can see that the Hyper 6 has performed exceptionally well in both a high and low setting, besting the Zalman CNPS-7000 by as much as 4 degrees Celsius on low at full load, which to the hardcore overclocker, is enough of a decrease to warrant some praise.  However, on high, the noise of the Cooler Master fan is exceptionally louder than the Zalman on high.  But, Cooler Master claims this heatsink performs well on silent levels and the results have shown they haven't disappointed us.  For the Zalman to compete with the Hyper 6 on its lowest fan speed setting, you would have to turn it on high, which is significantly noisier than the near silent Cooler Master fan.  Very impressive results.  One thing I wanted to try was how the heatsink performed with two fans in a push-pull method.  After trying it, temps only decreased one degree on load and wasn't enough to justify its increase in noise.  Thus, this heatsink will suffice with the one fan that Cooler Master has supplied us with.


Overall, when all is said and done, the attractiveness of this heatsink depends on the actual user and whether or not he enjoys taking apart his computer when installing a new cooler.  I know I didn't, and I'm sure many other people are in the same boat as me.  Perhaps they will release a new revision that utilizes retention brackets already on existing motherboards.  However, the extra time put into installation results in an excellent performing heatsink that bests out the current champ of near silent CPU cooling.  Besides the mounting issues, Cooler Master has a definite winner on its hands.


  • Compatible with both Athlon 64s and P4s
  • All copper for maximum performance
  • Six! heat pipes for excellent performance
  • Near silent on low speeds
  • Beautiful look
  • Fan included
  • Cool Packaging


  • Very heavy (2 lbs)... not sure if most will feel safe transporting their computers with this cooler.
  • Mounting requires removal of motherboard
  • Need to remove PCI components to install fans

We would like to thank Cooler Master for providing us the sample.  If you have any questions or comments, feel free to hit us up in the forums. You can also check out more of our latest reviews on the front page.