My motherboard currently have

[coolfella]

any help again

 

[setishock]

What's under the hood? Is it a P1 or 2 or an AMD K6 series? I've had some real oddball rigs over the years.
But like Lhuser said go 133 if it will take it and let the bios throttle it back to 125.

 

[coolfella]

hw will it throttle it back to 125,
any help

 

[lhuser]

Well, it will throttle iself. It's going to reduce the speed, so that the PC125 stick will work. If you select in your BIOS to use PC133, you will lose your PC125, as it will not be used, due to the lack of speed.

DJ-CRHIS, I don't know about PC-142, but I know that there is something higher than it. I don't remember which one though.