Got it running at 3.81 GHz OCCT stable:
Code:
Extreme Tweaker
Ai Overclock Tuner : Manual
OC From CPU Level Up : AUTO
CPU Ratio Control : Manual
- Ratio CMOS Setting : 9.5
FSB Frequency : 400
FSB Strap to North Bridge : 400
DRAM Frequency: DDR2-800
CPU Voltage : 1.375v
DRAM Voltage : 2.10
Loadline Calibration : Enabled
...then I took it up to 4.0 GHz:
Code:
Extreme Tweaker
Ai Overclock Tuner : Manual
OC From CPU Level Up : AUTO
CPU Ratio Control : Manual
- Ratio CMOS Setting : 10
FSB Frequency : 400
FSB Strap to North Bridge : 400
DRAM Frequency: DDR2-800
CPU Voltage : 1.425v
DRAM Voltage : 2.10
Loadline Calibration : Enabled
Again, everything else is at stock voltage and settings. I am seeing about a .015-.017v difference between set vcore in the BIOS and what I'm getting in CPUz. I know I need at least 1.375v for 3.81, as I tried a couple notches lower and got some BSODs. It ran 6 1/2 hours of Prime last night before I stopped it this morning.
Not sure if I need the full 1.425v for 4.0 GHz, but since I went up .05v going from 9 x 400 to 9.5 x 400, I figured that might be about right to start with.
Next step is going to be 10.5 x 400 and 11 x 400, then trying to tweak the ram to run @ 500 & the FSB at 417 (so the ram is at 500).
FORGOT TO ADD: I got tired of the whiney little 45mm fan, so I swapped it out with a 70mm fan from a stock AMD heatsink. This fan is a lot quieter, pushes more air, and has a thermal control built in. NB temp runs in the upper 30's to the lower 40's.