Coolant temperature this AIO settles at over fan rpm, its dissipation in W/K, and the noise of its 2 stock fans. Calculated from the radiator size and thickness and the stock fan's datasheet with the RadiatorTemp model. Not measured; the bands show the spread.
| fan rpm | CFM through core | W/K | Coolant above intake, 250 W | Coolant at 30 °C intake | dB(A), 2 fans |
|---|---|---|---|---|---|
| 500 min | 25 | 8.0 | +31.3 | 61.3 °C | <15 |
| 600 | 31 | 8.9 | +28.1 | 58.1 °C | <15 |
| 800 | 41 | 10.6 | +23.6 | 53.6 °C | <15 |
| 1000 | 51 | 12.1 | +20.7 | 50.7 °C | <15 |
| 1200 | 61 | 13.5 | +18.5 | 48.5 °C | 15.6 |
| 1400 | 71 | 14.8 | +16.9 | 46.9 °C | 18.4 |
| 1600 | 82 | 16.0 | +15.6 | 45.6 °C | 21.0 |
| 1800 | 92 | 17.2 | +14.5 | 44.5 °C | 23.5 |
| 2000 | 102 | 18.3 | +13.6 | 43.6 °C | 25.7 |
Model values; the ±15 % band is drawn in the charts above. Change heat load, intake and target in the database view.
A radiator moves heat in proportion to the difference between coolant and incoming air: Q = q · (Tcoolant − Tair).
q depends on the air actually passing through the core. Airflow per fan is CFMmax · derate · rpm/rpmmax
with the radiator derate (0.62, or 0.72 for pressure-optimized blades) times the core-thickness factor. Per 120 mm segment at 27 mm:
q = 8.5 W/K · (airflow / 45 CFM)0.6; heat transfer over fins scales with roughly the 0.6 power of velocity.
| Core | Airflow factor | Fin area factor |
|---|---|---|
| 27 mm | 1.00 | 1.00 |
| 30 mm | 0.97 | 1.09 |
| 38 mm | 0.90 | 1.15 |
| 45 mm | 0.84 | 1.22 |
Thick cores gain fin area but lose airflow; at low rpm the net is close to zero. With fans off, natural convection is taken as 1 W/K per segment.
The band is ±15 % on q: fin density, coolant flow and preheated case air. Pump speed matters little above roughly 1 l/min.
Noise is the stock fan's curve plus 10 · log₁₀(fan count).
Air entering the radiator is case air, usually 5 to 10 K above room. Die temperatures sit above the coolant by the block and TIM delta, typically 25 to 45 K under load. Nothing here is measured; the same model runs in RadiatorTemp.