kotel wrote on 2025-06-08, 13:25:
PC Hoarder Patrol wrote on 2025-06-08, 10:15:
Gigabyte issued an extended ratio table for the coppermine era, but you're still cpu locked at x7 whatever the jumper block multiplier is set to...
The attachment Gigabyte Extended Ratio Table (Intel).jpg is no longer available
Why is that? BIOS limitation or the fact these CPUs could be multiplier locked?
All Coppermine Pentium III processors have the CPU multiplier internally locked and they don't recognise external multiplier jumpers or BIOS settings. So, as it stands, your cpu will support either 700MHz (7 x 100MHz FSB) or 466MHz (7 x 66MHz FSB) on the GA-6BXS. As @Horun said initially, clock IC-driven FSB is how these processors overclock and I don't find anything to suggest the board / BIOS supports FSBs other than 66 & 100MHz.
Whilst there are BX / GX boards supporting a wider range of FSBs (I've a few Supermicro models supporting 66, 83, 100, 106, 112 & 133MHz) if you want more out of this board you could try a faster processor - Gigabyte list the fastest supported as 1GHz (10 x 100 FSB) on PCB rev. 1.6 and BIOS F1 or F2C. This may also work on earlier PCBs, but if not 800-850MHz should be fine.
