Cooler Master Hyper Z600 CPU Cooler Page: 1

Cooler Master Z600Cooler Master is a name most commonly known for luxurious cases, rather than performance CPU cooling. However, Cooler Master have made some bold claims about their new Z600 cooler, with passive cooling for quad-cores and active cooling promising high overclock capabilities for your CPU. We put the Z600 to the test to find out if it can really live up to the hype.

There is quite a lot of information about the company available on the Cooler Master website, but for those that don’t fancy the long read, here’s an extract:

‘Cooler Master was founded with the mission of providing the industry’s best thermal solutions. Since its establishment a decade ago, the company has remained faithful to this mission, emerging as a world leader in products and services for companies dealing with devices where heat issues must be resolved.’

As this is a passive cooler, there are no specifications for fans, however, since we will be testing this cooler with active cooling (push/pull configuration) in addition to passive cooling, we have supplied the specifications for both:

Cooler Master Z600:
CPU Socket: Intel Socket LGA775 & AMD Socket (Socket 940/AM2/AM2+)
CPU Support: Intel Core 2 Extreme, Core 2 Quad, Core 2 Duo, Pentium Extreme Ed., Pentium Dual-Core,
Pentium D, Pentium 4 Extreme Ed., Pentium 4 HT, Pentium 4, Celeron Dual-Core, Celeron D, AMD Phenom, Athlon 64 X2, Athlon X2, Sempron.
Dimensions: 127.28 x 127.28 x 160 mm
Material: Cu base, 6 heat pipes, Aluminium fin
Weight: 1045 g
Heat Pipes Dimensions: φ6mm

Aero Cool turbine fan:
Dimension: 120mmx120mmx25mm  
Air Flow: 37.44 CFM
Static Pressure: 0.035 Inch-H2O
Speed: 950+ - 10%RPM
Noise: 19.66 dBA

Cooler Master Hyper Z600 CPU Cooler Page: 2

The front of the box of the Z600 is fairly plain, but rather eye catching. There is a glossy cut out of the cooler attached in the centre, so that it is raised from the rest of the box, with a black outer glow surrounding the edges. It also features the Cooler Master Logo and product name.
Cooler Master Z600 Box Cooler Master Z600 Box
The remainder of the box contains product details, specifications and shows a few images of the cooler in action.
Cooler Master Z600 Box Cooler Master Z600 Box
Once inside the outer shell, you are presented with the internal packaging. This consists of two main pieces that split apart leaving the cooler in the middle. There is foam padding inside each compartment, protecting the cooler from damage during transit.
Cooler Master Z600 Internal Box Cooler Master Z600 Box Open
Cooler Master Z600 Box Contents Cooler Master Z600 Contents
All of the accessories are concealed neatly in the end of the large compartment and pulling up the edge reveals two plastic re-sealable bags containing all the accessories. Inside there is a warranty slip, fan mounts, mounts for sockets AM2 & 775 and a nut/screw thread used for attaching the cooler to the motherboard with the supplied screws.

When you first set your eyes upon the cooler you are immediately amazed by the size of the thing. To put it simply, it is HUGE. Upon removing it from the packaging you also notice another thing - weight. The thing weighs a ton, and is incredibly solidly built. The fins are solid, and do not bend easily, and the base is nicely finished and smooth.

Cooler Master Z600 Cooler Master Z600

Comparing the Z600 to the stock Intel cooler, you get a very good idea for size; the stock cooler is just above the height where the fins on the Z600 start. Talking of heatpipes, you may also notice that the Z600 has a fair few of them - 6 in total.

Cooler Master Z600 Comparison Cooler Master Z600 Base
Cooler Master Z600 Fins Cooler Master Z600 Fans Attached

The Z600 uses two different fin sizes, using an alternating pattern down the cooler, and then smaller fins at the bottom to give clearance above the motherboard and VRM’s. You will also notice the ridges in the fins; this is for attaching fans using the supplied plates.

Cooler Master Hyper Z600 CPU Cooler Page: 3
Test Setup

CPU: Intel Core 2 Quad Q6600 @ stock and 3ghz (1.3v Vcore, 1333mhz FSB)
Motherboard: Asus Maximus Formula
Ram: 4gb Crucial Ballistix Tracers
Case: Tagan/Aplus Black Pearl case with 1 intake and 3 exhaust 120mm fans
Graphics: Palit Nvidia 8800gtx

Arctic Cooling Silver 5 was used for the review. 3 remounts were run for each cooler, each time using alcohol cleaner to clear off any left over AS5. A fresh layer was then applied onto the CPU before mounting the cooler once more. For idle testing the PC was booted into windows, and then left on the desktop for 15 minutes and the temperatures recorded. For load testing, 4 instances of Prime95 torture testing were run for 15 minutes then temperatures recorded. Temperatures were recorded using Everest.


The Z600 can be installed on either a Socket 775 system or an AM2. For this review we will only be testing it on a 775 platform. The mounting plate is attached to the base of the cooler using 4 small screws. Both plates can be seen in the images below.

Cooler Master Z600 Mounts Cooler Master Z600 Mounts

You then need to put the back plate onto the motherboard. Placing the motherboard face down you then want to have the mounting holes on your motherboard lined up with the mounting holes on the back plate. Then place the cooler top down and put the motherboard over the top. By laying the motherboard onto the cooler you do not put all the weight of the cooler onto the motherboard. The mounting screws are then visible on the back of the motherboard.

Cooler Master Z600 Plate Cooler Master Z600 Plate

Once the screws are through, it’s a simple case of screwing on the nuts with the supplied adapter. You need to do them up fairly tight, but be careful not to over tighten and damage your motherboard. Then, install the cooler back in your case and you are away, here is the review sample mounted with active cooling (to show how just much space this cooler can take up).

Cooler Master Z600 Installed

As you can see it is an incredibly tight fit, with the cooler only just fitting. Overall though, the mounting mechanism is well thought out, and is kept as simple as it could be. The average user shouldn’t find mounting the cooler a problem, but a novice may find it a bit daunting.

Cooler Master Hyper Z600 CPU Cooler Page: 4
Test Results

We have added in results for the Intel Stock Cooler and an Arctic Cooling Freezer 7 Pro. This will give you an idea of how it performs, compared to other cooling products. The ambient temperature throughout testing was constantly around 26°, only differing by a degree at the most.

For the Stock testing we tested the Z600 with no fans attatched, this gives you a good idea of how it will perform 'out of the box' with just the case fans for airflow.
As you can see, the Z600 sits pretty much in the middle of the group here, however, since it is completely silent the results are rather good.

Here the Z600 pulls out quite a lead. The temperatures raise only a small amount compared to idle, where as the Freezer 7 and Stock cooler go up by quite a margin. A very impressive result for the Z600.

With the CPU now at 3Ghz it was kicking out quite a lot of heat. However, the Z600 (now with fans attached) handled it without breaking into a sweat and easily beat the Freezer 7 by quite a margin; another good result.

Once again the Z600 proved to be extremely capable. It easily beat the Freezer 7 and kept the Q6600 at very reasonable temperatures. The Z600 cooler has proven that it is a very capable partner to a hot running quad-core.

Cooler Master Hyper Z600 CPU Cooler Page: 5

The results speak for themselves if we’re honest. We really didn’t think that a cooler would be able to tame a quad passively, but it seems to do so with ease. We weren’t very impressed with the idle temperatures, but after running Prime95 and the temperatures only changed by around 8 degrees, we were thoroughly impressed.
The build quality of the unit is very good, with the fins feeling rigid and strong. The ‘manual’ is a bit bare - a simple black and white sheet of paper. But it does include everything you need to know to install and use the cooler. We were a bit disappointed that Cooler Master doesn’t ship the cooler with a fan. Although it performed extremely well on stock tests, for the more adventurous PC user that likes to overclock, it makes much more sense to use a fan actively cooling the heat sink.

Although the installation was a bit awkward and took some time, the temperature decrease was worth it. The cooler is also rather large, and only just fits in my case, so bare that in mind before you buy. Available for £34.99 from YOYOTech it isn’t the cheapest cooler around. However, with the performance on offer, and the fact that it can cool a Quad-core passively, it’s a small price to pay if you are after a quiet and cool system.

The Good
+ Can cool a quad passively
+ Out performs a Freezer 7 Pro by quite some margin
+ Good build quality
+ An extremely powerful cooler when coupled with some 120mm fans
+ Doesn’t hurt the wallet too much

The Mediocre
* Manual is a bit bare
* Mounting is difficult and takes some time

The Bad
- Size and weight - It was a struggle fitting it in the test system
Overclock3D Performance Award
Overclock3D would like to thank Cooler Master for supplying today's review sample
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