I have a relatively new MSI KM3M-V motherboard on which I swapped my AMD Sempron cpu for an Athlon XP3000+ chip. The mobo default FSB jumper is set for 133Mhz. When set at default, Windows XP registers the chip speed at 1.73Ghz. The chip is rated to run at 2.167Ghz.
I thought the FSB jumper set to 166Mhz would bump the speed. After moving the jumper, the system would power on but I got nothing else. No POST, no error beeps -- nothing. Setting it back to 133Mhz would reset the system back to where I started. Someone I work with said it's possible that XP is reporting the speed incorrectly, but the gap between the expected and actual speed is 437Mhz. That seems like an awful big gap to misreport.
I don't know how to determine whether the problem is with the board, the chip, or me. Here's a link to the mobo settings: http://www.msicomputer.com/product/p_spec.asp?model=KM3M-V&class=mb
I hope I laid out the problem well enough. If not, please feel free to ask any follow-up questions.