Scythe Grand Kama Cross CPU Cooler

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Scythe Grand Kama Cross CPU Cooler

May 24, 2010 by Lawrence Lee

Scythe Grand Kama Cross
CPU Cooler
Scythe Co., Ltd.
Street Price

As computer microprocessors continue to ramp up in speed and power consumption, modern motherboard components that deal with power management are subject to an ever increasing amount of stress. Current high-end motherboards ship with high quality components and heatsinks for the voltage regulators as manufacturers expect enthusiasts to dish out even more stress through overclocking. It is ironic that these same users typically use large side-blowing tower CPU heatsinks, reducing the helpful top-down airflow most stock cooler units provide over the components surrounding the CPU socket.

For those concerned about this issue, down-blowing heatsinks are better, though they generally do not cool the processor as effectively, partly because they do not blow exhaust out toward the back of the system. An ideal top-down cooler would provide improved socket cooling without sacrificing much in the way of CPU cooling proficiency.

Enter the Scythe Grand Kama Cross, a larger version of the Kama Cross, a modestly sized cooler with only 3 copper heatpipes and a 100 mm fan. The Grand version is much larger, featuring four heatpipes with airflow provided by a 140 mm Slip Stream fan. It is unusual looking with the heatpipes curving inward so that the ends cross each other in a "X" formation. The aluminum fins around the heatpipes are tightly spaced, angled to direct airflow around the socket, and surprisingly short, particularly at the ends. The total area of the fins is lower than usual for a heatsink of this size.

The Scythe Grand Kama Cross box.


The Grand Kama Cross.

While Scythe has introduced hard mounting systems for some of their heatsinks, the Grand Kama Cross, despite weighing 750 grams, ships with S478, AMD, and LGA775/1156/1366 mounting frames that utilize stock mounting mechanisms. On the Intel side, not only do you have to deal with push-pins, but for LGA1156, the pins have to be slid halfway between the LGA775 and 1366 positions. There is nothing to lock the push-pin in place, which can result in a mounting that is off-center. The only good thing about these frames is they can be rotated, which is useful for the Grand Kama Cross since one side is much wider than the other. If the heatpipe ends are arrayed vertically, it could interfere with the power supply in many ATX tower cases.


Scythe Grand Kama Cross: Key Features
(from the product web page)
Feature & Brief Our Comment
Top Mount Fan
By pointing the airflow of the fan towards the motherboard, Chipsets and MOS-FETs on VR modules can be cooled simultaneously.
Blowing down on the motherboard has its advantages, but this usually results in poorer CPU cooling compared to heatsinks that blow out the side.
Slip Stream 140 mm PWM Fan
By applying the new SLIP STREAM140 fan, wider area of components on the motherboard can be cooled compared to 120mm fans while keeping low noise and high cooling ability for the CPU.
120mm Slip Streams perform well and have excellent acoustics. The Grand Kama Cross uses a large 140 mm PWM model.
4-Way Mounting
4-Way (direction) mounting is available. This allows you to configure the optimized airflow direction inside your chassis without and restrictions.
Like many Scythe coolers, the mounting frame is secured from the bottom with a square hole configuration, allowing it to be freely rotated.

Scythe Grand Kama Cross: Specifications
(from the product web page)
Model Name Grand Kama Cross CPU Cooler
Model No SCKC-2000
Compatibility Intel®:
Socket 478
Socket T / LGA775
Socket LGA1156
Socket LGA1366

Socket 754
Socket 939
Socket AM2
Socket AM2+
Socket AM3

Dimensions 177 x 140 x 137 mm /
6.97 x 5.51 x 5.39 in
Fan Dimensions 140 x 140 x 25 mm /
5.51 x 5.51 x 0.98 in
Noise Level 9.6 ~ 24.7 dBA
Air Flow 27.2 ~ 69.93 CFM
Fan Speed 500 ~ 1,300 rpm (± 10%)
Weight 750 g (26.46 oz)
Material of Base Plate Nickel-plated copper

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