Point taken about the 3000 RPM fans, heh.
Congratulations on sourcing the Extreme! I bet you'll love it!
I've been experiencing BSODs and crashes to desktop the last 12 hours or so. I've also been utilizing more of my memory because I'm starting to do post production while rendering, which I hadn't previously. I disabled the XMP profile and am going to see how it treats me, 3600 is probably just pushing it. If that doesn't fix it I'll start doing some detective work on stop codes etc.
Edit: Dropping to stock memory profile (2133mhz) speed only impacted the benchmark by 2 seconds, up to 30 seconds from 28. Huh, I would have expected a way bigger difference. So far the system is stable again.