The Scythe Ninja 4

Mounting hardware gave me PTSD.

Posted by HowManySmall on December 24th, 2016
The Ninja 4 is the latest model in the Ninja CPU Cooler Series, developed for uncompromising performance. It features the new T-M.A.P.S technology, an optimized alignment of heatpipes, and the back-plate based Hyper Precision Mounting System (H.P.M.S) for firm mounting and easy installation procedure.

Special thanks to Derek of Scythe for getting this sent out to me! You're awesome for sending this monster! Also, I'm out of title things.

Test System

  • CPU: AMD FX-8350 (overclock: 4.6GHz@1.49v)

  • Thermal Paste: ARCTIC MX-2

  • Motherboard: ASUS M5A97 R2.0

  • Memory: Kingston HyperX FURY 16GB (2x8GB) DDR3L-1600

  • GPU: Sapphire R9 Fury NITRO 4GB

  • Case: NZXT S340

  • PSU: Thermaltake Tough Power DPS G 750W

  • Software: SpeedFan / CPU-Z / Cinebench R15 / Speccy / AMD Overdrive / Windows 10 Professional


Mother of god, this thing was awful to install. On AMD, it requires the stock cooler backplate, and I didn't have one, so I had to buy one. Once I got it, I then have to get this stupid, stupid plate that goes in the middle of the cooler on and screw it down without it popping up (which it does a lot), and that's damn near impossible. I have never, ever dealt with something so stupidly difficult to install, and I hope to never come close to something this difficult. This deserves a 6, even though I should give it a 5 for the atrocious hardware, but the fact that it has both a magnetic screwdriver and a little wrench saved it from said 5.

Noise Level

The fan on this thing is soooooooo awesome! It has three modes, high, medium, and low. Low maxes out at around 800RPM with a max of about 0.5mm/H2O, medium does about 1150RPM with about 1.06mm/H2O, and high spins at 1500RPM with ~1.79mm/H2O according to Scythe's site. I'm actually using the fan it came with on high as rear exhaust on my case, and holy nuts, it's still quiet and moves a fair amount of air. I also did this test on the high setting, and it was still one of the quietest coolers ever. Easy 10 here.


This part was what made it up in the end for me. I'll have the thermals listed right below, but here's a hint, it performs insanely well for the price.


  • Lowest: 59.8°C from throttle

  • Highest: 47.5°C from throttle

  • Average: 50.2°C from throttle

CPU-Z Stress Test

  • Lowest: 34.5°C from throttle

  • Highest: 28.1°C from throttle

  • Average: 29.3°C from throttle

Cinebench R15 Multicore Test

  • Lowest: 45.6°C from throttle

  • Highest: 27.2°C from throttle

  • Average: 29.5°C from throttle

Just wow. This performance really made it worth ever hour I spent trying to get this thing on. It performs like an $80 cooler for half the price. It also fits in my case, measuring only 155mm tall. That's insane, keep it up with these short monsters and you'll have all my tens!! Take my 10 Scythe.


When I opened this cooler's box and I saw the top of it, I said "holy piss, that's shiny and pretty". It's absolutely beautiful on top, featuring a polished metal finish and even a shuriken outline too. The heatsink itself is beautiful, and the fan follows a simple monochromatic (is that the right word?) theme, being a simple gray and black. Good job Scythe, 10 / 10.


This cooler has only two flaws, the installation and the fact that it's fragile beyond belief (was bent when I got it). If you can find this thing under the $50 point and you need a cooler, this is one that I'm going to say you should buy. I love nearly everything about it, except that atrocious mounting hardware on AMD. Hopefully it's easier on Intel, but I don't know, I'm AyyMD, not "Inntel".


  • Performance (40% of the score): 10

  • Noise Level (30% of the score): 10

  • Installation (20% of the score): 6

  • Aesthetics (10% of the score): 10

  • Final Score: 9.2 / 10

Scythe's Site

Ninja 4's Product Page

Buy the Scythe Ninja 4 on Amazon!

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