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ARCTIC Liquid Freezer III 420 vs DeepCool AK620: Comparison
ARCTIC Liquid Freezer III 420 and DeepCool AK620 separate most on fan count: ARCTIC Liquid Freezer III 420 at 3, DeepCool AK620 at 2, 33% in favour of ARCTIC Liquid Freezer III 420. Static Pressure splits them by another 9%, again favouring ARCTIC Liquid Freezer III 420. They match on 4 other specifications, including rgb lighting, bearing type and pwm control.
Specs
| Specification | ![]() | ![]() |
|---|---|---|
| Brand | ARCTIC | DeepCool |
| Cooler Type | AIO Liquid | Air Tower |
| Series | ARCTIC Liquid Freezer III 420 | DeepCool AK620 |
| Model Number | ACFRE00137A | R-AK620-BKNNMT-G |
| Socket Compatibility | AMD AM4/AM5, Intel LGA1851/1700 | AMD AM4/AM5, Intel LGA1700/1200/115X/2066/2011-3 |
| Tower Layout | Not Applicable | Dual-Tower |
| Fan Count | 3 | 2-33% |
| RGB Lighting | No | No |
| Cooler Weight | 2235 g | 1456 g |
| Fan Size | 140 mm | 120 mm |
| Max Speed | 1700 RPM-8% | 1850 RPM |
| Airflow | 72.8 CFM | 68.99 CFM-5% |
| Static Pressure | 2.4 mmH2O | 2.19 mmH2O-9% |
| Bearing Type | Fluid Dynamic | Fluid Dynamic |
| PWM Control | Yes | Yes |
| Lighting | None | None |
| Fans | 3x P14 PWM, 140mm | 2x 120mm FDB PWM, Up to 1850RPM |
| Source URL | https://www.arctic.de/us/Liquid-Freezer-III-420/ACFRE00137A | https://global.deepcool.com/products/Cooling/cpuaircoolers/AK620-High-Performance-CPU-Cooler/2021/13067.shtml |
Verdict
ARCTIC Liquid Freezer III 420
9 / 10 Expert Rating
One of the best value-per-degree AIOs available at any radiator size, now in its largest non-Pro form.




