Two 140 mm fans sit on the radiator, and the motherboard controls them by PWM between 400 and 2500 rpm. Under light load they spin slowly; in games or renders the board raises the speed. The copper base plate takes heat from the processor and the pump carries it to the 38 mm thick aluminium radiator. A separate VRM fan blows air over the power stages around the socket, which in liquid-cooled builds are often left without airflow.
Builders putting together a gaming or work PC on AM5 or LGA 1851 whose case has room for a 280 mm radiator. According to ARCTIC the loop is fully maintenance-free, so there is no coolant to top up or replace. The black finish without lighting suits a low-key build.
| Brand | ARCTIC |
|---|---|
| Model name | Liquid Freezer III Pro 280 |
| Product colour | Black |
| Type | All-in-one liquid cooler |
| Pump depth | 108.5 |
| Pump width | 91 |
| Pump height | 68.5 |
| Tube length | 450 |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Fan diameter | 140 |
| Tube diameter | 12.4 |
| Number of fans | 2 |
| Radiator depth | 317 |
| Radiator width | 138 |
| Radiator height | 38 |
| Radiator material | Aluminum |
| Suitable location | Processor |
| Base plate material | Copper |
| Tube inner diameter | 6 |
| Fan dimensions (W x D x H) | 140 x 140 x 27 |
| EAN | 4895265000317 |
| Supported processor sockets | LGA 1700/LGA 1851/Socket AM4/Socket AM5 |
|---|
| Fan connector | 4-pin |
|---|---|
| Pump connector | 4-pin |
| Fan current | 0.35 |
|---|---|
| Fan voltage | 12 |
| Pump current | 350 |
| Pump voltage | 12 |
| Operating temperature (T-T) | 0 – 40 °C |
|---|---|
| Airflow | 186 |
| Fan speed (max) | 2500 |
| Fan speed (min) | 400 |
| Maximum airflow | 110 |
| Fan static pressure | 5.2 |
| VRM fan speed (max) | 2500 |
| VRM fan speed (min) | 400 |
| Pump motor speed (max) | 2800 |
| Pump motor speed (min) | 800 |
| Package type | Box |
|---|---|
| Pulse-width modulation (PWM) support | Yes |
| Weight | 1.91 kg |
|---|---|
| Product Net Weight | 1.91 kg |
According to the manufacturer, the Liquid Freezer III Pro 280 supports LGA 1700, LGA 1851, AM4 and AM5. No other sockets are listed.
Your case needs a 280 mm radiator mount, meaning two 140 mm fans side by side. The radiator measures 317 × 138 × 38 mm, the fans add 27 mm and the tubes are 450 mm long.
Both the fans and the pump use 4-pin PWM connectors, so the motherboard can adjust their speed to the CPU temperature.
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