I was pondering how hard it was to change the multiplier on VIA Nehemiah CPUs and rather than ponder wrote a few lines of code. I was rather surprised when I was able to overclock my VIA C3-M (Nehemiah, C5P) from it's stock speed of 800 MHz (x6.0) to 1.53GHz (x11.5) 😀 With the multiplier set to x11.5 then the system seems 100% stable to the extent the CPU benchmark runs and I can generate the SIV save files. I tried setting x12 which resulted in a BSOD and when I set x13 the hardware just locked up and I needed to power cycle the system.

I am wondering do I have a "golden" chip or is this typical ?