In Crimson 16.x versions (even the last 16.3.1 beta), my two Sapphire 7950 VaporX in Crossfire won't go under 60°C when idle. Today I've downgraded to 15.11.1 beta which is I believe the last non-Crimson version. Now the secondary card seems to be in power saving mode since its GPU is at about 40°C. This also benefits the primary card which is now at 55°C.
Did anyone also noticed the same behavior ? I'm reporting it to the support.
Temperatures where checked with Speedfan and Catalyst/Crimson Overdrive config.