The temperature/noise ratio
On these perf/noise ratio graphs, we remind you that the best is to be placed as much as possible at the bottom left of the graph. For the reading, the left most point symbolizes the ventilation in 12V, the one in the center the ventilation in 8V and the right most in 5V.
In 100W, we feel that the Kraken 240 RGB is not at ease on its highest speeds. Indeed, the kit clearly falls behind the rest of the pack. However, at low speeds, it seriously catches up with Kraken Elite 360 which lacks pep in these conditions.
Finally, at 150W, we still have an AIO kept away from the rest of the group. However, we should avoid running it at low speed on a power-hungry processor since the temperature-noise ratio deteriorates. This can be felt in the curve, which becomes significantly longer.
Beyond 150W, the NZXT heatsink is clearly not capable of performing its function, which is why there is no third graph in 200W.