Hmm...there was no throttling at all. Crysis slow down was just a co-incidence, I think. The temps for both cores were arnd 45C and thats really weird. Logic says Tcase should return lower temps than that and not some insane value like 123C. I've run Orthos and Prime95 for 30 minutes each without any CPU throttling or temperature issues, just to be sure.

By my understanding, the CPU sensors only return the core temps which in turn decides whether to slow down the proccy or not. The Tcase temp is provided by the sensors onboard the mobo and in my case, only Asus PCProbe 2 returns correct temps for CPU tcase and mobo. HWMonitor somehow gets stuck at 123C whenever the CPU is on full load.