I honestly don't know if it's 1 per CPU or 1 per core. I assumed 1 per CPU because setting it on core0 shows it changed on the other 3 in the Biostar board. I'm not sure how to address the other cores from the BIOS anyhow.

The BKDG for the Phenom is very tough to read and many things are not explained, where in the BKDG for AM2 and A64, it was very clear...

But, I'm glad it seems to be working correctly... Thanks for testing it!