Cooler Master Hyper Z600 CPU Cooler: A Real Heavyweight

Cooling
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Comparables

The Hyper Z600 performs similarly to the Scythe Ninja Copper, another behemoth in both size and weight. Considering its dimensions and the ordeal of installation, we expected better. We can only hypothesize that the big gap between the fan and the center of the heatsink limits it. If the Z600 was a simple square-shaped block like the Scythe Ninja/Copper, it probably would fare better. It would also fare better with a higher speed fan, but then there'd be the the issue of greater noise.

Comparison: °C Rise Above Ambient Temperature
Reference 120 Fan
Ultra-120 eXtreme
Xigmatek S1283
Scythe Ninja CU
Hyper Z600
Scythe Andy
12V
12
13
17
17
16
9V
14
15
18
19
20
7V
17
18
20
21
24
5V
24
22
23
25
29

FINAL THOUGHTS

The Cooler Master Hyper Z600 looks very impressive, but it does not take the heavyweight heatsink crown — at least not for cooling performance with a low speed fan. It's tall and has plenty of surface area, but its shape makes it challenging for a low-speed fan. That said, it still performs extremely well, more or less matching the Scythe Ninja Copper. Like the Ninja Copper, its size and large surface area makes it a viable option for passive cooling, although not with the hottest processors. It should have no problem cooling a mid-range Intel or AMD processor without a fan.

Compared to the competition, the Z600's installation process is tedious. While we can see why they opted for tightening the assembly from the motherboard's underside — the heatsink's size leaves very little room over the standard LGA775 mounting holes — better hardware should have been used. The current hardware and mounting procedure is quite a pain.

We don't know exactly how much the Z600 will end up costing on the retail market — we suspect it will be at least around $50. There's heavy competition in that price range. The Xigmatek HDT-S1283, especially, with its low cost, size, weight, and exceptional performance is an immediate competitor not easily countered. The Hyper Z600 is a very good, quiet cooler when equipped with a low speed fan; but mated with a high speed fan, we suspect it will enjoy greater success with the overclocking and gaming crowd .

Cooler Master Hyper Z600
PROS

* Great performance
* Dual-fan ready
* Very secure mounting
CONS

* Gigantic
* Heavy
* Difficult installation

Our thanks to Cooler Master for the Hyper Z600 heatsink sample.


POSTSCRIPT - May 27, 2008

The question of whether the gap between the fan and the fins could be closed — and what the effect of this might be — came up in the forum discussion of this review. It was a simple experiment to try. A piece of ordinary packing tape was used to block the hole at the top. The bottom portion was left open, as it's needed for VRM cooling anyway.

The result was a small but measurable 2°C improvement in cooling at all fan speeds. There was no impact on noise. This experiment demonstrates clearly that there is a significant loss of airflow — an airflow short-circuit — caused by the big gap between the fan and the center of the heatsink fins. Using a square-shaped cover rather than one that's the same X-shape as the fins would improve performance.

Cooler Master Hyper Z600
Fan Voltage
SPL @1m
Gap open (normal)
Gap closed (taped)
12V
22 dBA
39°C
37°C
9V
~19 dBA
41°C
39°C
7V
<19 dBA
43°C
41°C
5V
<19 dBA
47°C
45°C
Load Temp: CPUBurn for ~15 mins.


Articles of Related Interest
Thermaltake V1: "Peacock Tail" Cooler
Thermaltake MaxOrb Heatpipe Cooler: Maximum Orbness
Two Big Top-downers: Big Typhoon VX & Xigmatek HDT-D1284
Xigmatek HDT-S1283 & SD964 "heatpipe direct-touch" CPU coolers
Akasa AK-965 socket 775 tower cooler
Ninja Copper: Scythe's 5th Year Celebration

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Discuss this article in the SPCR forums.



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