For testing I compared the GeminII S524 with my favorite baseline CPU Cooler – the Noctua NH-U9B SE2. I tested the coolers at both stock and overclocked using the MSI OC Genie under both idle and load conditions.
The chart above really speaks for itself. Only at idle speeds at stock CPU settings did the Noctua match the GeminII S524. All other tests had the GeminII S524 coming in at 3-5 degrees Celsius. This was exactly the opposite from what I had assumed. For noise both the Notcua cooler and the GeminII S524 are quieter than the case fans. Between the two the Noctua was slightly quieter than the GeminII S524, nothing to surprising here considering the price difference.