Is there a spread spectrum setting in any version of the BIOS for this board? I read that disabling it can fix the BCLK to 100 MHz instead of the 99.8 MHz I see typically. Just a minor, inconsequential quibble, but still a little eyesore. I also wonder if it helps with stability, not that I have any issues.
Using the search function in BIOS 2203 I see only VRM spread spectrum on Auto, and disabling it had no noticeable effect on BCLK. I've read others mention SB spread spectrum (on C8H) and CPU spread spectrum.
Do you have DOCP enabled? I know i have read about others getting 100 BCLK when they use auto or manual BCLK but when they used DOCP for their memory they get 99.8. It's almost as if ASUS is turning spread spectrum on when DOCP is used.