Cooler Master Geminii S524 VER.2 CPU Cooler Review


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Cooler Master GeminII S524 VER.2: Performance Test 1

Our first CPU Cooler Performance Test takes use of the included TIM and fans included with each CPU cooler. The Cooler Master Gemini II includes only one fan for a push setup and a small bag of Scythe branded TIM which can be reused for one installation. The purpose of this test is NOT to prove which cooler is better, but rather to give our readers an expectation of what to expect from each cooler using the stock fans and TIM.

Cooler Master Silencio FP 120 mm PWM Fan Specifications

Courtesy of Cooler Master

Model number R4-SFNL-14PK-R1
LED Color Non-LED
Dimensions (LxWxH) 120(L) x 120(W) x 25(H) mm
Speed 800-1,400 RPM ± 10%
Airflow 16.4-44 CFM ± 10%
Air Pressure 0.47-1.69 mmH2O ± 10%
Life Expectancy 160,000 hrs
Noise Level (dBA) 6.5-14 dBA
Bearing Type Loop Dymanic Bearing (LDB)
Connector 4-Pin (PWM)
Rated Voltage 12 VDC
Rated Current 0.03 A
Power Consumption 0.36 W
Weight 158g

Test 1 Results


The Cooler Master Silencio 120 mm fans have a measured RPM rating from 800 to 1400, although our sample ran until 1960 rpm while being limited to the Asus AI suite of our gryphon Z87 motherboard to a minimum of 1100 rpm.The Cooler Master GeminII S524 Ver. 2 passes our performance test with flying colors, averaging 54.7 degrees Celsius under load from our Aida 64 run, which is fairly comparable to any load coming from a CPU intensive game.


Raising the CPU core of our I5 4670k to 4.2 GHz requires increasing the core voltage to 1.175 V. In our overclocked test the CM GeminII S524 Ver. 2 still keeps our I5 4670k under control averaging 63.9 degrees Celsius, which is a great score in our test 1. What is even more surprising is how much better the CM Gemini S524 Ver. 2 is when compared to the old Hyper 212 Evo which shows Cooler Master’s efforts over the years.


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  1. JackNaylorPE

    Given the claims of the extra cooling benefits besides the CPU, can you add anything relative to that particular feature ? Given the cost difference, versus performance difference with the Hyper 212, many I don’t think would be willing to spend the extra moola unless there’s some real benefit there.

    1. Julian Duque

      Of course! Don’t forget that this is not supposed to be a direct replacement of the hyper 212 evo, as it is not even of the same line of CM products. The Geminii Ver. 2 is low profile-ish, which should allow it to be mounted in smaller cases were the 212 evo doesn’t fit like the corsair 250d. You also get support for a 140 mm fan, something that the 212 evo lacks. CM also include a silencio 120 mm fan with the Geminii Ver.2 which is a lot better acoustically when compared to the stock fan of the 212 Evo. Also, remember that the Hyper 212 Evo retailed close to $35 in the USA when launched, meaning the Geminii Ver. 2 is actually just a $7 dollar premium.

  2. Richard Graber

    You evaluated this device against others, including the 212 Evo, and found it superior. I would like to confirm that this is the cooler to get in comparison to the 212 Evo.

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