Scythe Orochi CPU Cooler Page: 1
Scythe is a name synonymous with aftermarket cooling hardware. I would like to wager that there aren't too many PC enthusiasts who hadn't at least seen, owned or heard about this well known Japanese based company's products. But who are Scythe, and what do they do?
Scythe Co., Ltd. (Registered & incorporated in Tokyo Japan) originally started in Akihabara Electric Town located in Tokyo Japan, where visitors can find the latest electric products from computer parts and accessories to the world’s most advanced cellular phones with video camera capabilities, small displays and the ability to play movies!

Scythe Co., Ltd., began its operation and business in November, 2002 as a distributor and manufacture of PC parts & gaming devices for “DIY PC Experts!”. Scythe’s first venture was to manufacture a super powerful YET super quiet CPU cooler (Scythe Kamakaze CPU cooler), and with the great success of this Kamakaze CPU cooler, Scythe became recognized as the leading CPU cooler supplier in Japan’s Akihabara Electric Town. Shortly there after, due to popular demand, Scythe began exporting products all over the world.
Scythe OrochiScythe has had an impressive run of success with their range of innovative and well-performing CPU heatsinks; plus they've gathered a considerable fan base along the way. From the Scythe Ninja through to the Scythe Mugen, there is a Scythe heatsink for every possible scenario and end-user.

Today, I have been given the opportunity to review the Scythe Orochi CPU Cooler, which is quite possibly the largest CPU heatsink that I've ever gotten my hands on - it's simply massive! Furthermore; the Scythe Orochi has been marketed as 'Quad-core ready and able to be used in a fanless capacity.
Right, enough of the chit-chat let's get down to business by checking out the Scythe Orochi's specifications. The specifications were taken directly from Scythe's product page.
Model Name: Orochi CPU Cooler

Model Number: SCORC-1000

Socket 478 All Speeds
Socket T/(LGA)775 All Speeds

Socket 754 All Speeds
Socket 939 All Speeds
Socket AM2 All Speeds
Socket 940 All Speeds

120 x 194 x 155mm / 47.24 x 76.38 x 61.02inch (Overall Dimension)
140 x 140 x 25mm / 55.12 x 55.12 x 9.84inch (Fan Dimension)

Fan Speed: 500rpm (±10%)

Fan Noise: 10.8dBA

Air Flow: 29.39CFM

1155g (Unit) + 130g (Fan)
2.55lb (Unit) + 0.29lb (Fan)
With a gross mass of nearly 1300 grams the Scythe Orochi is bordering on the insane, but the 10 heatpipes and cooling surface area should enable it to present some really good cooling figures on the board. Let's head over the page to have a look at the review specimen in a little more detail.

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A massive heatsink demands an equally large box in which to house it. The Orochi's packaging is typical Scythe whereby every square inch of available space is plastered with the product's specifications, features and images.
Orochi front of box Orochi top of box
Orochi side Orochi side_2
Opening up the Orochi's packaging, we can see that it is extremely well packed and is snugly fitted within the included 140mm fan and the outside wall of the box. Immediately below the Scythe Orochi is a smaller white box containing all necesary mounting hardware.
Orochi packaging Orochi contents
Orochi mounting hardware
The box containing the mounting hardware reveals one obvious exclusion when opened - the Intel push-pin mounting system. It's understandable as to why the push-pin mounting system has been omitted here due to the immense weight of the Scythe Orochi heatsink. Included in the packaging is:
* Scythe Orochi heatsink
* 140mm fan
* Fan clips
* Installation manual
* Thermal paste
* Intel and AMD mounting hardware.
A Closer Look
Looking a little closer at the Scythe Orochi, we can see just how large it is when compared to my Samsung Blackjack smartphone.
Orochi size comparison Orochi size comparison_2
My camera really doesn't do the Scythe Orochi's appearance justice here in these few pics, but hopefully you'll get the idea.
Orochi rear Orochi front
Orochi underside
Every cooling fin on the Scythe Orochi is well-soldered, and the whole heatsink feels extremely solid and of very good quality.
Orochi well soldered
The 140mm fan included with the Scythe Orochi is a ball bearing type and of the quality that we've come to expect of Scythe. According to the specifications on the previous page, the fan doesn't push a hell of a lot of air, but it is designed to be as silent as possible.
Orochi 140mm fan rear Orochi 140mm fan front
Let's head over the page to see how easily this monster can be installed...

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Installation of the Scythe Orochi requires the motherboard backplate to be positioned and socket mount to be screwed to the heatsink.
backing plate in place Mounting hardware installation
The two mounting bars are screwed directly into the motherboard backplate with thin nylon washers in between. I found this part of the installation quite fiddly. You'll also notice that I had to remove my Noctua NC-U6 passive NB heatsink in order to install the Orochi.
Mounting bars in place
Once you've applied your thermal paste onto your CPU, simply orientate the Orochi and press down the two retaining clips and voila. The beauty of the Orochi's mounting system is that it is quite flexible in its orientation, although Scythe do recommend that it isn't placed with the front of the heatsink facing down.
Heatsink mounted Heatsink mounted_2
As long as you have sufficient headroom in your chassis, the Scythe Orochi will complement any rig (or dwarf it lol), but please be mindful of the width required in order to accommodate it as shown in the image below.
Image illustrating width
Let's head over the page to see how we're going to test the Scythe Orochi.

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Testing Methodology
In order to test the Scythe Orochi, I have decided to target the two main areas that should cover our broad spectrum of readers here at Overclock3D. I will be assessing the Scythe Orochi under the following conditions:

* Cooling performance (Idle, load and overclocked)
* Noise

The test setup for today's performance review will be comprised of:

* Intel C2D Q6600 Processor (G0 stepping);
* ASUS P5B Deluxe wi-fi/ App motherboard;
* 2GB's OCZ PC2-6400 Titanium RAM;
* Thermaltake Xaser VI case;
* 80GB Western Digital SATAII HDD;
* Scythe Orochi CPU Cooler
* Scythe Kama Cross CPU Cooler
* Intel quad-core reference heatsink
* Noctua NT-H1 thermal paste.

I have explained my testing methodology for each phase of the performance review below:

Cooling performance

I will be testing the Scythe Orochi on my Q6600 (G0 Stepping) processor to assess the heatsink's ability to handle the heat-load of a quad-core, especially since Scythe state that the Orochi is 'quad-core ready'. Whilst many HTPC enthusiasts would not be using a quad-core CPU as the processor of choice, instead opting for a lower spec'd Intel C2D or AMD X2 dual-core processor, I have decided to test the heatsink with my Q6600. CPU load will be simulated using 2 x instances of Stress Prime 2004 ORTHOS Edition.

Ambient temperature will be taken using a standard mercury thermometer and allowing it time to normalise. Processor idle/load and overclocked temperatures will be obtained using Core Temp 0.99, and an average taken over the four cores...purely to make plotting the chart a little easier to read. All testing will be conducted 3 times and an average taken to ensure the uniformity of results. The Intel reference heatsink, Kama Cross and the Scythe Orochi will be tested, removed, and then re-installed a total of three times to ensure the elimination of any poor mounting issues.
While I would have liked to have included some larger heatsinks like the Mugen, Noctua NH-U12P and Thermalright Extreme into the comparison, they weren't available at the time of testing.
Ambient temperatures during testing ranged from 23.3 - 23.6 degrees Celsius. Case temperatures ranged from 25.6 degrees Celcius at idle through to 28.5 degrees Celsius during overclocking.


Possibly the hardest part of any CPU Cooler review is summarising the level of noise given out by the fan, should it have one included. The threshold for what is considered 'noisy' varies from person to person and therefore what I may consider quiet, another person may consider extremely loud. For this reason, all reviews from this point forward will be using a dBA meter to measure the level of noise output by the fan.

All noise measurements are taken in a quiet room with the dBA meter located approximately 500mm away from the heatsink.

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Test Results
Idle temps
Load temperatures
Overclocked chart
Noise chart
We can see from the top two charts that the Scythe Orochi performs very well in both idle and load temperature tests, especially when using the included 140mm fan. But this is Overclock3D and we want to see some overclocking right? Ramping up the vCore and FSB we can see that at 3.4Ghz my toasty little quad-core starts throwing out a challenge to the Scythe Orochi and leaves the Kama Cross behind (returning unacceptable 24/7 temperatures). The 140mm fan really doesn't provide a hell of a lot of airflow and temperatures begin to escalate a little...Still I was expecting higher temperatures on the Orochi during passive testing. However, with the 140mm fan installed, I was able to take my Q6600 to 3.510Ghz with only slightly more elevated temperatures. Any further overclocking was not possible due to my OCZ Titanium memory not wanting to be pushed any further.
When it comes to noise testing the Scythe Orochi wins hands down. I really had to listen hard to hear the fan over the 2 x 120mm case fans that I have in my Thermaltake chassis. The 140mm fan didn't exhibit any whining at all during testing and the only real noise came from air movement through the cooling fins.

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So how well did the Scythe Orochi fair in today's review?
After picking myself up off the floor when I first unpackaged the heatsink and seeing its size (I can hear the innuendo now lol), it really started to grow on me. The build quality is typical Scythe - well-constructed and built to last. And the mounting system that Scythe designed to handle the Orochi's sheer weight works well and feels solid, although the initial installation can be a fiddly affair.
I was quite impressed with the Scythe Orochi's performance during the testing phase of today's review, but I must admit to wanting a little more considering its size. Whether you decide to run the Scythe Orochi with or without the included 140mm fan, the cooling surface area combined with the ten copper heatpipes manages to draw the heat away quite well. During my testing, I did run some tests with alternative 120mm fans (Scythe S-Flex, Yate Loon and Noctua) and was greeted with better results than the the 140mm fan provided, but we need to be mindful that it means sacrificing the silent, or near silent properties of the default unit.
One question that I do have for Scythe and other heatsink manufacturers, however, is how big is too big? In this day and age it almost seems too easy to just build heatsinks bigger and able to accommodate more fans rather than design more efficient ways of removing waste heat utilising air movement and cooling fins. This isn't in any way a negative comment towards Scythe or any other heatsink manufacturers, but perhaps more of a challenge to incite creativity and further R&D. Regardless, the Scythe Orochi is a really nice heatsink and a competent performer.
Pricing for the Scythe Orochi is a little at the 'dearer end of town', but when you consider the sheer size of it and the materials required to manufacture it, someone has to wear the have the Scythe Orochi for £49.34 inc. VAT.
The Good
* Performance
* Near silent operation
* Build quality
* Sensible mounting system
The Mediocre
* Price
The Bad
* Weight
OC3D Recommended award
OC3D would like to thank Scythe for providing the Scythe Orochi for review
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