Re: Asrock 970 Extreme3 and FX-8120 keeps throttling and I'm not overclocking.
Just to see what would happen I tried OCing my FX-4100 just a tad due to HTPC cooling limitations.
I set the OC mode to manual and the multi to 19.
Left the Vcore untouched and had C'n'Q, Turbo Boost and Thermal Throttling Disabled in the BIOS and System Cooling Policy set to Passive in Windows Control Panel>Power Options.
It behaved a little strange but not anything like you guys are describing.
Monitoring with Speed Fan and CPU-Z mine was locked at 19x200 (3.8GHZ) and stayed there until I started P95.
At first I would occasionally flicker down to 16.5x200 (3.3GHz) for 2 or 3 sec but as the temp approached 57C it was staying at 3.3GHz longer - perhaps 25-30%.
I'm guessing that perhaps the C'n'Q or Thermal Throttling toggle is not working in the BIOS.
One other interesting thing is that both SpeedFan and the AXTU monitor are showing the CPU temp at 37C when idling. - not significantly different from when I had all the power saving stuff enabled.
This is with CPU-Z verifying that the clock speed is 3.8 and the Vcore is holding at 1.384-1.392.
Think I'll leave it this way for a while.
My HTPC -
ASRock 970 Extreme3
AMD FX-4100 w/Coolermaster GeminII S cooler
M Station HT-1100 HTPC Media Center case
Antec 480 NeoPower PSU
Kingston HyperX Blu 8GB KHX1600C9D3B1K2/8GX
Gigabyte GV-R467ZL 4670/1GB video card
Hitachi HDS721050CLA362 500GB SATA hd
Windows7 Ultimate x64 & Ubuntu 10.04 LTS (partitioned)
Pioneer DVR-215D SATA DVD burner
Samsung 40" 1080p 120Hz LCD HDTV LN40C630
You can teach an old dog; it just takes longer.