Scythe FUMA – Test and Review

Scythe Fuma is one of the very few twin-tower coolers in the company portfolio and is actually based on the Scythe Mine 2 cooler, totally renewed with smaller dimensions without sacrificing the overall cooling performance. The cooler looks really promising and I am really curious how it will handle my AMD Vishera FX-8350 processor running with full load for 14:30 minutes at frequencies of 4000mHz, 4200mHz and 4400 mHz per core.

Let’s waste no more time and proceed with this article by opening the package and checking the contents inside of it and after that checking the main features of the product and running some actual tests.

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Scythe FUMA was provided to me for performing a thorough test and review inside a pretty compact but very colorful and full of details carton box in black and white. On the front side of the package there are some basic details regarding the compatibility of the product, while the full technical specifications, description of the technologies used so this product can be created, explanations and many more details including pictures are located on all of the other sides of the package.

I believe it is time open the box and check what’s inside…

 First look inside of the box The cooler itself
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By opening the package for the first time, I saw a very tight arrangement inside the box and that includes a carton cover hiding the CPU heat sink, the two 120mm fans on each side of the heat sink and the white carton box with all of the accessories in between the two towers. Everything looks tight and very well packed.

To follow the tradition, let’s proceed with checking the contents inside the accessories pack.

 

Scythe FUMA ADDITIONAL ACCESSORIES

Having in mind the cooler’s structure and compatibility options I believe it will definitely demand a very extensive accessories pack, so let’s pay some attention to all of the accessories inside the pack, which were packed in separate transparent nylon bags ensuring that all of them will be together with the cooler and in perfect condition.

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The standard Fuma package features:

  1. Black and very solid metal back plate required for all of the Intel sockets
  2. Two black metal front brackets required for all Intel and AMD sockets
  3. Black metal crossbar to secure the cooler to the CPU
  4. A set of four thumbscrews for all of the sockets
  5. A set of four shorter thumbscrews for 2011 sockets
  6. A set of four small screws to fasten the front brackets to the thumbscrews for all of the sockets
  7. A set of two screws to fasten the crossbar to the metal brackets
  8. 6 x fan clips for installing up to 3 fans in push-pull setup
  9. 4 x washers
  10. 4 x LGA1151 washers
  11. A rubber spacer for socket 775
  12. A wrench
  13. Y-PWM splitter
  14. A syringe of thermal compound
  15. An installation manual

I spent quite some time checking the accessories pack and I have to admit that while arranging the parts for taking pictures I saw that all of them are really solid and will definitely do the job of holding the cooler in place and providing rigid and reliable connection between the processor and the heat sink.

I believe it is time to put the additional accessories aside and proceed further with the actual cooler structure, starting with the heat sink.

 

Scythe FUMA HEAT SINK STRUCTURE

Of course, to describe the product in the best possible way, I spent some time examining the cooler’s structure and it actually offers a very innovative and interesting structure, featuring the formed as a pretty compact twin-tower heat sink, two Slip Stream 120 PWM fans and the Hyper Precision Mounting System (H.P.M.S) kit.

To keep the tradition, let’s start with paying attention to the contact plate.

 The contact plate  The pipes arrangement
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Scythe FUMA is manufactured with a perfectly milled copper contact plate with dimensions of 38.2 x 47 mm holding in line the 6 x Ø6mm copper heat pipes. The top part of the contact plate is actually formed to also hold the mounting crossbar, which is needed so this twin tower heat sink can be fastened to the mounting kit.

The pipes themselves, which are symmetrical to the contact plate are soldiered to the contact plate to increase the contact area and maximize the heat-transfer. Both copper heat pipes and copper contact plate are nickel coated to improve the aesthetics and the durability of the cooler.

And since I’ve mentioned the towers, let’s continue with the article and check the tower structure. Something which is really interesting and innovative.

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Scythe FUMA is designed as a symmetrical heat sink with two absolutely identical towers with dimensions of 104.4 mm (H) x 130 mm (W) x 39.9 mm (D) each and overall dimensions of the cooler of 137mm (W) x 149mm (H) x 130mm (D) and weight of 920 g including the fans.

Side view  Front view
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Actually there is something pretty interesting regarding the heat sink design and that is the fin stack structure. On top of every single fin stack there is the first rectangular fin which forms the overall shape of the towers. Beneath it there are 46 absolutely identical trapezoidal performance 0.4 mm thick aluminum fins with 2.2 mm fin gap which are positioned on an angle to the next fin and are forming an exhaust tunnels. When the trapezoidal fins are combined together in the opposite direction to each other they follow the shape pattern of the top fin. Pretty interesting idea, I should say. Hopefully, it will provide adequate performance results.

Since this is a twin-tower heat sink design, it is capable to work with up to 3 x 120mm fans, which could be installed on the front, back and in the middle of the towers.

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The fans provided in the package are two pieces of Scythe Slip Stream 120 PWM with dimensions of 120 x 120 x 25 mm, which are designed with an entirely painted in black frame and grey propeller with 9 pretty narrow and at the same time very sharply angled blades working at 300 (±300) ~ 1.400 (±10%) revolutions per minute range, providing airflow level range of 9.51 ~ 134.20 m³/h, static pressure level range of 0.01 ~ 1.56 mmH²O at noise level range of 13.0 ~ 28.0 dBA.

The connection between the propeller and the frame is done by а 4-pin PWM powered and regulated sleeve bearing made to provide quiet, stable and long life operation of up to 30 000 hours.

To install the fans I had to add the 4 metal clips to the fan frames and after that mount them to the front side and in between the two towers of the heat sink.

The fan brackets Fans installed
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The guys from Scythe also added a third pair of metal clips, so if anybody decided to, he can add a third fan for maximum cooling performance, which can be installed on the back side of heat sink in push-pull pattern.

With the fully assembled cooler, let’s check the mounting kit and proceed with the tests.

According to the official technical details, Scythe Fuma is compatible with:

  1. Intel sockets: LGA2011, LGA2011-v3, LGA775, LGA1150, LGA1151, LGA1155, LGA1156, LGA1366. All of the Intel sockets require the provided in the additional accessories painted in black X-shaped back plate.
  2. AMD sockets: AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+. All of the AMD sockets require the standard back plate provided with every AMD motherboard.

Of course, for doing the tests with my AMD FX8350 rig I will use the AMD brackets and these are the parts needed so the cooler can be installed on the motherboard.

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But before I proceeded with the actual installation, I spent some time checking the AMD installation manual, reading the instructions carefully and preparing all of the mounting kit parts.

As always, the first thing to do was to install the bolts and keep the original back plate attached to the PCB of the motherboard. And here is the moment to share something which is really important. There are AMD motherboards from various brands, supplied with 2 different types of back plates (one of the types offers 4 mm longer screw holes) which require some more attention when installing the cooler.

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As you can see in the picture my motherboard offers a back plate which when installed looks like this and later, if regular bolts are installed, will cause the cooler to hang in the air and there will be no contact or not enough pressure between the cooler and the processor.

The AMD parts  The mounting kit installed
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The next step was to install the AMD brackets to the motherboard and when installed to fasten the cooler with the crossbar and the two additional bolts.

I already mentioned that the installed mounting kit is hanging freely in the air and it will cause troubles later, but seems the guys from Scythe provided a solution which looks like this:

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If the standard back plate of the motherboard is the type with shorter screw holes, then the cooler can be installed without the need of the white washers on the picture above, but since my motherboard is one with the longer screw holes I had to add the additional washers and when installed the cooler is perfectly fastened in place providing solid pressure to the processor.

And this is what this twin-tower CPU cooler looks like installed on the motherboard:

 Heat sink seen from the front Heat sink seen from the side
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As you can see from the pictures above, with the heat sink installed on the motherboard the cooler is above all of the DRAM slots and can be used only with memories with shorter or without heat spreaders.

And this is what the cooler looks like installed on the motherboard and inside the case ready for testing.

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Since the cooler is installed and ready to face the tests, I believe it is time to check my testing rig and continue the article.

 

Scythe FUMA TESTS

CPU: AMD Vishera FX-8350

  1. At standard frequency 4.020 MHz (at 1.344V)
  2. At low overclock frequency of 4.220 MHz  (at 1.380V)
  3. At medium overclock frequency of 4.420 MHz (at 1.416V)

Motherboard: GigaByte 990FXA-UD3

Video card: 2 x Gigabyte GV-R927XOC-2GD

Memory: 2 x 4GB Geil Black Dragon 1866 MHz

Hard drive: Kingston SSD SV100S264G

Hard drive:  WD Server Edition WD1002F9YZ 1TB

Case: SilverStone Raven RV-03

Power supply: Antec HCP-750W

Cooler: Scythe FUMA

Thermal paste: Noctua NT-H1 thermal compound

 

The tests will be conducted in a closed system with:

  1. 2 x SilverStone AP181 – 180mm fans on the bottom panel of the case putting fresh air in and spinning at about 1200 rpm
  2. 120mm fan behind the motherboard cooling the socket and spinning at about 1000 rpm.
  3. Room temperature of about 18 degrees.

Both SilverStone AP181 – 180mm fans were connected together to the chassis 1 connector and were rotating at maximum speed.

And here I want to describe my testing method.

I will install Scythe Fuma and do stress tests using Prime95 AVX software with constant load on the AIO for 14:30 minutes with custom settings of minimum FFT size (in K of 128), max FFT size (in K of 128) and Run FFTs in place at standard frequency of 4.020 GHz (at 1.344V), at low overclock frequency of 4.220 GHz (at 1.380V) and at medium overclock frequency of 4.420 GHz (at 1.416V) using the fans provided with the cooler installed on the front and in the middle of the radiator, rotating at maximum speed of 1400 revolutions per minute.

Now let’s check out the test results:

Scythe FUMA @4020MHz 1.344V Scythe FUMA @4220MHz 1.380V
scythe-fuma-2fan4020mhz-1-344v scythe-fuma-2fan4020mhz-1-344v
Scythe FUMA @4420MHz 1.416V  
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All of the test results have been summed up in the following charts:

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And the fan speed during the tests:

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I believe the time to express my feelings and thoughts regarding the product has arrived.

Scythe FUMA CONCLUSIONS

1. Scythe FUMA performance:

Scythe Fuma is definitely a cooler which I’ve really enjoyed since the first sight, through the review and after the tests were complete. A product, which I find a worthy successor of the Scythe Mine 2 cooler and in general a nice addition to the company products list.

The cooler itself is most probably one of the shortest twin tower coolers, which I was able to test and review and it is definitely made to provide serious cooling performance and a lot of possibilities.

Throughout all of the perfectly performed tests, the cooler was able to maintain my processor working stable at all frequencies with a constant and pretty serious load for almost 15 minutes. According to the results which the cooler was able to achieve I can say that it will definitely be able to keep every modern processor working cool and stable at default, middle or high overclocked frequencies and in my opinion it is definitely made to satisfy all of the needs of the normal users and the gamers. For the extreme overclock a third fan will definitely be needed and still, since the cooler is with tighter dimensions, it still might not be enough.

Apart from that, while I was testing the cooler the fans were rotating at about 1400 revolutions per minute and were just a little bit noisy, but after all of the tests were conducted and the fans were set to be PWM powered and regulated, they were dead silent and barely reached 1000 revolutions per minute for normal daily usage.

2. Scythe FUMA  appearance:

Scythe Fuma is a product made to offer a really tight and reliable looking cooler design with a stylish and pretty shiny heat sink, combined with two fans in the black/grey colour scheme, which can be really attractive to the regular and experienced customers and it will fit in every modern entirely painted in black case or modding project.

According to my review, I think that Scythe FUMA deserves the following award:

Best-Perf-Visual

Official price (MSRP) for Scythe FUMA : 39 euro without VAT

Official warranty: 24 months

Special thanks to Scythe for providing us with a test sample.

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Scythe FUMA – Test and Review
7.2 Total Score

Performance
10
Noise Level
9
Compatibility
7
Additional accessories
10
User Rating: 2.72 (5 votes)

Dobrin Krastev is the owner, reviewer and newsman of www.DVTests.com with more than 15 years' experience in personal computers, server and storage systems, UPS, peripheral devices and software. Passionate about testing and reviewing, AMD overclocking using AM3 990FXA and AMD FM2 A85X test systems and building modding projects.
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