Quadraman is right. The card is only compatible with the Kansas motherboards and certainly not with the 8500/9500 or any 8600/9600 with an original speed lower than 250 MHz.

Also, the resistor beside the 250 MHz label is an indicator only as already explained above. If you examine the board more closely, you'll see that those solder pads are completely isolated and receive no current whatsoever. To change the speed of the card, you have to change a resistor located elsewhere. The hack is explained here: http://www.bekkoame.ne.jp/~t-imai/ilcpce1.html

Here's another great page about these systems: http://www.xlr8yourmac.com/tips/mach5.html

I've got a pair of 300 MHz cards and one 350 MHz card. I overclocked one 300 MHz card to 350 MHz, and I overclocked the 350 MHz card to 400 MHz. They are all quite stable, but they do run hotter than stock, of course.

Peace,

Drew