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 |
|---|---|---|---|---|---|
| 500 min | 35 | 12.4 | +20.2 | 50.2 °C | <15 |
| 660 | 46 | 14.6 | +17.1 | 47.1 °C | <15 |
| 880 | 62 | 17.4 | +14.4 | 44.4 °C | 16.3 |
| 1100 | 77 | 19.8 | +12.6 | 42.6 °C | 20.2 |
| 1320 | 92 | 22.1 | +11.3 | 41.3 °C | 23.9 |
| 1540 | 108 | 24.3 | +10.3 | 40.3 °C | 27.1 |
| 1760 | 123 | 26.3 | +9.5 | 39.5 °C | 30.0 |
| 1980 | 139 | 28.2 | +8.9 | 38.9 °C | 32.5 |
| 2200 | 154 | 30.1 | +8.3 | 38.3 °C | 34.8 |
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.