Scythe Kama Cross

Scythe Co., Ltd. is a Japanese company located in Tokyo. Scythe started manufacturing and distributing products for the PC enthusiast in 2002. This included CPU cooling solutions like Scythe's first product, the Scythe Samurai. The Samurai developed quite a reputation among computer enthusiasts as an effective CPU cooler.

Scythe currently lists about a dozen air cooling solutions on their company website. These range from entry cooling solutions all the way to full cooling tower designs. Their current catalog includes the well-known Scythe Infinity, the Scythe Ninja Rev. B, and the Andy Samurai Master, which were all reviewed at AnandTech. There are also mid to low-end offerings such as the Scythe Katana 775 that was also reviewed at AnandTech.

Scythe always seems to have interesting designs for their coolers. You also find catchy and clever names, like the Kama Cross being reviewed here.


The text may be too small to read without a magnifying glass, but if there is something you want to know about the Kama Cross you will find it somewhere on the box. This is very typical of Scythe packaging.


Inside the box you will find the Kama Cross fully assembled except for the socket mounting plate. The design is truly unique, with an X configuration of 45° fin-cooled heatpipes. Scythe claims this unique design improves airflow to the motherboard compared to traditional top-mount fan designs.


The 100mm fan is pre-mounted, but Scythe also has provisions for easily mounting a 120mm fan. When you change fans you will find the fan holds the X together, and you will likely need to squeeze the sides of the cooler together to fit the holes on the second side. Once the fan is mounted the structure is light and very secure.


The stock 100mm fan does not completely cover the top of the cooler, but it does cover all the heatpipes in the X structure.


An optional 120mm fan, like the Scythe S-FLEX SFF21F, completely covers all the heatpipes in the design. Since Kama Cross is designed to support a 120mm fan, there is no real size savings using the included 100mm fan.

Specifications

The Kama Cross can mount on AMD 754/939/940/AM2 and both Intel Socket 775 and 478. Very few current coolers support Socket 478, so if you need a cooler for an older Intel 478 board this one will work.

Scythe Kama Cross Specifications
Dimensions 140(W) x 120(D) x 132mm(H)
Weight 530g (18.7 ounces)
Material Copper heatpipes and aluminum fins
Configuration 6 copper heatpipes in X configuration

Scythe 100mm Fan Specifications
Fan Size 100mm x 100mm x 25mm
Fan Type Sleeve Bearing
Maximum Fan Speed 1500 RPM
Maximum Noise Level 22.0 dBA
Maximum Airflow 42.69 CFM

The included fan is specified at a low 42.69 CFM at 12V. Thankfully, it is also claims a very low noise level of 22.0 dBA. It is very easy to increase airflow by mounting a 120mm fan in place of the stock 100mm. With many very low noise 120mm options, it is possible to increase airflow dramatically while keeping noise levels low.


For these reasons the Kama Cross was also tested with the excellent Scythe S-FLEX SFF21F. A favorite in past reviews, the S-FLEX uses a Sony Fluid Dynamic Bearing to decrease noise and increase fan life. The SFF21F increases air flow to 63.7 CFM at a specified noise level of just 28.0 dBA.

Installation

The Scythe Kama Cross is fully assembled except for the mounting plate. Attaching the plate is very easy - regardless of socket - and it just requires four screws and the mount is attached. You will not need to remove the motherboard in any of the sockets supported, as the Kama Cross will mount on the standard mounting cage.

For Intel 775, the Kama Cross mounts with the dreaded push clips. They work, the cooler is reasonably light, and they don't require removing the motherboard. However, Kama Cross overhangs the push clips on all sides and you may have quite a time reaching a hand in a mounted case to push all the clips home. In our typical mid-tower case the motherboard screws needed to be removed to slide the motherboard to the side so we could reach the back clips. Obviously, cooler mount designers should actually mount the cooler in typical cases before finalizing the design. Clips mount fine on a lab bench, but they cannot always be reached in real-life cases.

Index OCZ Vendetta
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  • strikeback03 - Thursday, October 04, 2007 - link

    should be better, but fitting them would be a problem as they would have to be really thin. Plus small fans are usually loud. Best way to make this cooler worth anything would probably be a shroud to block air from heading straight out the bottom or to the sides. Reply
  • DrMrLordX - Monday, October 01, 2007 - link

    Were it not for the noise on the Vendetta, I'd say it would be entirely preferable to the ever-popular Arctic Cooling Freezer HSFs. At that price point, with that performance, the only reason I could see going for a Freezer 7 Pro would be the noise were I sensitive to that sort of thing. Reply

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