We use CPUID HWMonitor to measure the maximum CPU and GPU temperature after a 10 minute AIDA64 full system stress test. After that we then let the system idle for a further 10 minutes before recording the minimum CPU and GPU temperatures. Room temperature was held constant at 24 degrees celsius for the duration of this testing.
Temperatures vary depending on which surface you choose to place the Asteroid on. Scenario #1 has the system on very thin carpet tiles and this clearly hinders cooling performance, placement on a thicker carpet or rug would obviously hinder things further. Scenario #2 is on a flat hard surface, a desk to be precise, and here the results are about 8 degrees better under load thanks to the improvement in airflow at the bottom of the case.
Placement of the OCUK Asteroid is crucial given the bottom-exhaust design of the dual-radiator watercooling loop.