CYBENETICS LTD Syrou 6, Latsia, 2231, Nicosia Cyprus
ARCTIC Freezer 36-S
Lab IDACCLR00117
TypeAir
  • Testing Dates: Apr 15, 2026 to Apr 18, 2026
Scheme: THETA
AMD AM5THETA Silver · Air · AMD AM5
No THETA levelIntel LGA1851
Aristeidis Bitziopoulos, Certification Body General Manager

THETA Cooler Performance

THETA is a Cybenetics performance rating. It is not part of our ISO/IEC 17065 certification schemes and is outside our accreditation.

Overall Performance (OP) = W × F / T, where W is the average CPU power at the EPS connectors (W), F the average CPU frequency (MHz) and T the average CPU temperature (°C). A cooler is rated on its measured OP at 30 dB(A) normalized noise output; a cooler that cannot reach 30 dB(A) is rated on its own measured 25 dB(A) point. Air and AIO coolers have separate ladders on each test platform.

Evaluated before Revision 2.0 of the Cooling Solutions Test Protocol: the THETA level was assigned from the published results measured under Revision 1.8 (20 minutes per noise level, 10-minute cool-down). The cooler was not measured again, and the earlier procedure is not identical to the procedure of Revision 2.0.

PlatformTHETA levelTest CPUMountRated atOverall Performance (OP)
AMD AM5THETA Silver · Air · AMD AM5AMD Ryzen 9 7900X (AM5)Default30 dB(A)9,814
Intel LGA1851No THETA levelIntel Core Ultra 9 285K (LGA1851)Default--

General Information

Test Equipment

Noise Test Environment Hemi Anechoic Chamber with 6dB(A) noise floor
Sound Analyzer Bruel & Kjaer 2270 G4
Microphone Bruel & Kjaer Type 4955-A
Temperature Logger Picoscope TC-08
Climate Chamber Giant Force GTH-800-20-CP-AR
Testing Methodology Cybenetics Cooling Solutions Test Protocol

DUT Information

BrandARCTIC
ModelFreezer 36-S
Lab IDACCLR00117
Testing DatesApr 15, 2026 to Apr 18, 2026
EngineerAris Bitziopoulos

Climate Chamber

Noise Test EnvironmentHemi Anechoic Chamber with 6dB(A) noise floor
ManufacturerGiant Force
Model NumberGTH-800-20-CP-AR
Temperature Range-20℃ ~ +100℃
Humidity Range20% ~ 98% RH
Temperature/Humidity Constancy±0.2℃; ±2.5%RH
Temperature/Humidity Uniformity at center±0.5℃; ±4%RH
Internal Dimensions (WHD)100 x 100 x 80 cm
External Dimensions (WHD)145 x 190 x 135 cm
Net Weight (approximately)450 Kg
Heat-up Time (No load, no linear)(from 20°C to +100°C) 30min
Pull-down Time (No load, no linear)(from 20°C to -20°C) 50min
Cooling SystemAirtight compressor + evaporator fins + air-cooling condenser
Power Source3Φ AC 380V ±5%, 50Hz±1% 10KW
Based on StandardsISO 5801-2007, AMCA 210-0, ASHRAE 51-2007, IEC 61591-2005, GB/T 1236-200

AMD Test System

Mainboard Asus TUF GAMING X670E-PLUS
CPU AMD Ryzen 9 7900x
GPU Embedded
NVMe XPG GAMMIX S50 Lite 1TB
RAM XPG Lancer DDR5 (2 x 16GB) 6000MHz
Power Supply Seasonic Vertex 1200W
(Cybenetics Platinum)
CPU Cooler Device Under Test
Case Cooler Master Test Bench

Technical Specifications

Manufacturer (OEM)ARCTIC
ModelFreezer 36-S
Number of Fans1
Fan #1ARCTIC P12 Pro
TypeAir
Heatpipes4
Heatpipe Diameter6mm
Length126mm
Width88mm
Height156mm
Block MaterialCopper
Weight685g
AMD Processors SupportAM4,AM5
Intel Processors SupportLGA1851,1700
Warranty6 years

Noise Output and Fan Speed

Table

Fan SettingNoise (dB(A))Fan 1 (RPM)
40%16.51435
50%21.61701
60%25.91979
70%29.12234
80%32.42564
90%35.42850
100%39.33100

Graphs

Noise Output vs Fan SettingdB(A) [lower is better]Noise Output vs Fan SettingdB(A) [lower is better]15202530354040%50%60%70%80%90%100%16.521.625.929.132.435.439.3
Fan Speed vs Fan SettingRPMFan Speed vs Fan SettingRPM10001500200025003000350040%50%60%70%80%90%100%1435170119792234256428503100

Fan Speed at Fixed Noise Levels

Noise LevelFan 1 (RPM)
15 dB(A)1350
20 dB(A)1620
25 dB(A)1890
30 dB(A)2260
35 dB(A)2730

AMD System Test Results

Table

ConditionCPU Temperature (°C)CPU Frequency (MHz)CPU Power (W)Overall Performance
20 dB(A)95.15096175.89414
25 dB(A)95.25105177.29504
30 dB(A)95.25127182.29814
35 dB(A)95.25143184.29947
Full fan speed95.25146184.99989

Graphs

CPU Temperature - AMD SystemDegrees Celsius [lower is better]CPU Temperature - AMD SystemDegrees Celsius [lower is better]95.1495.1695.1895.295.2295.2495.2620 dB(A)25 dB(A)30 dB(A)35 dB(A)Full fan speed95.195.295.295.295.2
CPU Frequency - AMD SystemMHz [higher is better]CPU Frequency - AMD SystemMHz [higher is better]509051005110512051305140515020 dB(A)25 dB(A)30 dB(A)35 dB(A)Full fan speed5096.25105.35127.25142.65145.5
CPU Power - AMD SystemWattsCPU Power - AMD SystemWatts17417617818018218418620 dB(A)25 dB(A)30 dB(A)35 dB(A)Full fan speed175.8177.2182.2184.2184.9
Overall Performance - AMD SystemScore [higher is better]Overall Performance - AMD SystemScore [higher is better]9400950096009700980099001000020 dB(A)25 dB(A)30 dB(A)35 dB(A)Full fan speed9413.99504.39814.19947.19988.7

ARCTIC Freezer 36-S

ARCTIC Freezer 36-S
All data and graphs included in this test report can be used by any individual on the following conditions:
› It should be mentioned that the test results are provided by Cybenetics
› The link to the original test results document should be provided in any case
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