Coolant temperature this AIO settles at over fan rpm, its dissipation in W/K, and the noise of its 3 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), 3 fans |
|---|---|---|---|---|---|
| 450 | 18 | 6.4 | +39.2 | 69.2 °C | <15 |
| 600 | 23 | 7.6 | +33.0 | 63.0 °C | <15 |
| 750 | 29 | 8.7 | +28.9 | 58.9 °C | 15.9 |
| 900 | 35 | 9.7 | +25.9 | 55.9 °C | 19.0 |
| 1050 | 41 | 10.6 | +23.6 | 53.6 °C | 22.0 |
| 1200 | 47 | 11.5 | +21.8 | 51.8 °C | 24.7 |
| 1350 | 53 | 12.3 | +20.3 | 50.3 °C | 27.2 |
| 1500 | 58 | 13.1 | +19.1 | 49.1 °C | 29.4 |
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.