Overclocking my Klamath PII

[Guest]

I have a first generation PII(klamath). Currently I am at a 75Mhz bus (yuck) on a 4.5x multiplier, resulting in a 337 Mhz clock speed. My cooling is very sufficient. I removed the fan of an old power supply and connected it to a 12 watt transformer (12v, 1amp), which is screwed diagonally onto an alluminum heatsink with a silver compound thermal paste between the heatsink and processor.

I wanted to attempt to boost up the mulitiplier, but when I do so, while the multiplier goes up to 5.0x, the bus drops to 30Mhz, even though the jumpers are at 75. When I raise the multiplier furthur, anything over 4.5x, the bus stays at 30(28 if the bus is selected at 68Mhz, and 27 if the bus is at 66) I am working on a MSI MS6117 ver 1.1 mainboard. I'm not sure about the Bios. I know it is AM, and I think it is revision 1.20.

 

[Guest]

i can't seem to find the link right now, but i know there's an old article about how to get all the slot1 cpus running at a FSB of 100mhz, so you could overclock (assuming you have good ram) without raising the multiplier more (again, assuming you can raise the fsb on the mb). it's in the CPU archives somewhere. when i tried running at 100fsb without doing the little trick in the article, system wouldn't boot windows. after i did, it would boot windows but was pretty unstable. so i'm back to 4.5x66 now, because it's good enough for what i do and the system crashed once every few hours and it was annoying. but i've seen most other people who do this report no problems; i may have not done it right. so find that article and try it, should let you OC through the fsb instead of the multiplier.