Well, I've removed the fan controller and plugged the two case fans into the headers on the motherboard. Oddly, it's dropped the average temperatures by a degree or two. Maybe it's the thermal compound maturing (does it still require a bedding in period? It's been a while since I did any of this).
Another 10 minute Prime run at 4.0Ghz:
Another 10 minute Prime run at 4.0Ghz:
