Air Cooling

Ron is gamer from the United States, who has been in love with technology since high school and building PC's since 2012.

Raijintek is a great company that releases cases and CPU coolers at a very reasonable price. Raijintek has recently released a new CPU cooler and we have the pleasure of testing a new RGB cooler on our testbench. The CPU cooler that we will be taking a closer look at is the Leto Pro RGB CPU Cooler. The cooler also comes without RGB fans.


  • Dimensions (W x H x D): 127mm x 101mm x 155mm
  • Weight: 925 grams
  • Heat-pipes: Direct Touch 4 x 6mm
  • Material: Solder-free Aluminum Fins
  • Fan Dimensions (W x H x D): 120mm x 120mm x 25mm
  • Speed: 800-1800 rpm
  • Bearing Type: Sleeve Dynamic
  • Air Flow: 56 CFM
  • Air Pressure: 1.6 mmH2O
  • Noise Level: 25 dBA
  • Connector: PWM, 4-pin RGB
  • Compatibility: Intel Sockets: 775, 115X, 1366, 2066, 2011 AMD: AM4, AM3+, AM3, AM2+, AM2, FM2+, FM2, FM1


Taking a closer look at the box, notice that they box is universal and can be used for both the Leto Pro Black version and also the Leto Pro RBG version.

The front of the box displays the Leto Pro Black cooler with white LED fans. One of the sides has a picture of the Leto Pro RGB, the other side has both SKUs with a checkmark describing which cooler is in the box. The back of the box lists all the specifications for the CPU cooler. This cooler does have a 5-year warranty which will make sure you are able to continue using this cooler for your personal system for several years.

Once you open the lid of the box you find the CPU cooler itself with the fans already mounted, an accessories box and the instruction manual.

While not necessary, there is no padding in the box to protect the CPU cooler from being damaged. Luckily, the CPU cooler arrived without any damage to the cooler or the box.

A Closer Look

The first thing I notice when taking a closer look at the Raijintek Leto RGB is the black coating on the aluminium fins and also the cold plate. This overall black aesthetic will complement almost any build.

The aluminium fins are designed using a solder-free louvre fin to increase heat pipe ventilation and as you will see during testing, they are effective. The four 6mm heat pipes make direct contact with the CPU heat spreader and are able to carry heat up to be dissipated.
The 2 RGB Fans use a sleeved bearing, have anti-vibration rubber pads in the corners and an O-type LED for great color and brightness.

Testing System and Installation

Processor: AMD Ryzen 5 2400g
Motherboard: Gigabyte AB350N Wifi ITX
Graphics Card: Onboard Vega 11 Graphics
Memory: 16gb Gskill Flare X 3200mhz
Storage: 240g Samsung 850 Evo ssd
Power Supply: XFX TS 750w
Case: Cooler Master HAF Evo XB Test Bench


Idle Temps: The temperature is recorded after 5 minutes of idle
Metro LL Benchmark (Very High, AF 16X, No AA, PhysX dis): This is looped into 3 consecutive runs and the highest temperature is recorded
ROG Realbench 15 min Stress Test: This test is accomplished to put a realistic load on the CPU/GPU. It runs LuxMark and Handbrake to stress the CPU, cache, GPU and RAM of your system.
Ashes of the Singularity CPU Test: The CPU test is used to place a great gaming load on the CPU with lots of calculations being made with the many units on the screen during the test.
Rise of the Tomb Raider: This game is less demanding on the CPU and more demanding on the GPU but is a great title to benchmark game performance.
Cinebench R15: This is a great CPU test to use all of the threads on your processor.


The installation of the cooler was pretty straight forward. One difficulty that I did have was getting the screws through the foam on the provided backplate, specifically for the AM4 socket. I am glad that they do have the foam on the motherboard side of the backplate as it provides a good amount of padding to make sure you don’t damage the backside of your motherboard while you are securing the Leto.

While effective, the typical fan clips can provide a little bit of a challenge securing the fans to the cooler. Once they are on, they are very secure. There is plenty of mounting hardware to be able to mount this cooler to almost any mainstream socket.


The following are what I believe to be a great group of real-world representative tests to be able to stress the CPU and integrated Vega GPU and lastly the CPU cooler that is attached. The ambient temperature of the room during testing is 18 C. The testing was conducted with the 2400g stock settings, an Overclock of 3.9 Ghz on the CPU, an Overclock of 1500 Mhz on the GPU and lastly both the CPU and GPU Overclocked. During testing the hottest package temperature is recorded.

System Idle (after 5 min of Power On)

The Raijintek Leto was able to keep the 2400g at 23 C and below during idle in all test variations of idle. This is an improvement over the wraith stealth as it was only able to keep the 2400g at 26 C in all test variations of idle.

Metro Last Light (Very High, AF 16X, No AA, PhysX Disabled (3 runs)

When testing Metro Last Light you can see that the Leto is able to shine, keeping the 2400g overclocked on both the CPU and GPU at bay with a temperature of 54.6 C.

15 minutes of ROG Realbench Stress Test

A similar story for Realbench, the Wraith Stealth had consistent temps in the 80’s C, while the Leto was no higher than 70 C.

Ashes of the Singularity (CPU Test)

For a game that is primarily used as a benchmark, the Leto was able to keep the 2400g (1500 mhz on the GPU) at a chilly 62.1 C, compared to 98 C with the Wraith Stealth.

Rise of the Tomb Raider Benchmark

For Rise of the Tomb Raider, the Leto was able to improve upon stock temps by 7 C.

Cinebench R15 (3 consecutive runs)

During testing of Cinebench R15, the Wraith Stealth allowed the 2400g (GPU 1500 mhz overclock) to climb to a toasty 93 C after one run. The Leto under the same overclock was able to maintain a maximum of 69.3 C after three runs.

Raijintek Leto Pro RGB
  • Cost
  • 2 Fans
  • Decent Heat Dissipation
  • Packaging
Review Summary

Overall, the Raijintek Leto is a great budget RGB cooler that is effective at disapating heat with the provided 2 RGB Fans, even if your CPU is overclocked. If you are in the market for a low cost RGB cooler, look no further than the Raijintek Leto.

Build Quality

You might also like

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.