Epox 8KHA+: No PCI Divider?

[cdub]

I was curious, I do not see an option for a PCI divider anywhere in the 8KHA+'s bios. Am I just missing it, or does a FSB overclock also directly overclock the PCI bus? That would seemingly make extreme FSB overclocking more difficult, I do not want to burn up my PCI cards.

Also I would assume that if it is a fixed ratio then the ratio is 1:4, meaning a 133 MHz FSB speed would have the PCI bus running at 33 MHz. Disclaimer, I am relatively new at overclocking, so I am still getting a grip on how changes to the FSB affect the rest of the computer.

Thanks for any info!

 

[rogue1979]

At 100MHz the pci divider is set at 1/3 for 33MHz on all pci devices. It doesn't kick over to 1/4 until 133MHz. So if you run like 120 up to 132 you will be way out of spec. After 133Mhz you will start to climb over spec also. Generally speaking, a 150MHz fsb for a 37.5MHz pci speed is the limit for a "safe overclock" provided you memory can handle it.