Here's my latest OC:

Core speed 3336.7 MHz
Start priming 2238 Hrs

Idle temp 38-40 C
Load temp 50-52 C

Priming ended 2300 Hrs
Stable, 0 error 0 warning

That' s it for now. I think my southbridge oledi burnt. Cuz suddenly can't use all USB ports and integrated sound is not working either.

Now I'm using a 4-port, pci-to-USB card and a USB soundcard.. 

Maybe i OC too much before, pumping excessive volts to the mobo.
FSB reached 953 MHz.
PD 805 user (x14 multipier) shoud get around 3.8GHz oledi but me with PD 820 (x14 multiplier) only can get 3.34GHz.. 

no. i didn't touch the pci-e and pci freq.
only fsb and ram, but ram not much..