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Performance and Comparisons
Throughout all of our thermal performance tests of the Fractal Design Celsius+ coolers, the integrated fan speed switch was set to PWM mode so we could control fan speeds via the motherboard BIOS to ensure consistency during all tests.
During our initial thermal performance test with the Intel Core i9-9900K set at an all-core frequency of 3.6 GHz, all three of the Celsius+ AIOs record solid results and are placed in the top half of our chart, all performing within 1°C of each other.
With the CPU set to 4.7 GHz across all cores, again the performance of all three Fractal Design Celsius+ AIOs is impressive. The 280mm S28 and 360mm S36 are very evenly matched, with the S24 240mm version recording average temperature just a fraction higher.
A for thermal performance in our extreme overclocking test, again we see all three of the Celsius+ coolers performing excellent. The S28 280mm version marginally performs better out of the three and sits in joint third position in our chart. Both the S36 and S24 are not far behind.
Noise level with the fans running at 100% RPM is a little on the high side, however, the S28 280mm version specifically is well within tolerable noise limits and isn’t too distracting at all. Both the S36 and S24 coolers that are equipped with 120mm fans are a little louder, but by no means are the noise levels the highest we have ever seen. This proves that this AIO series is a solid performer all round.
