Sandra by Sisoft is a great downloadable diagnostic utility. I’m not going to post a link cause of the whole non-advertisement thing, but punch Sisoft Sandra into any browser and you will find download sites. I think it’s shareware so do what your conscience tells ya. 
Naw, just open the case, shine a flashlight on the CPU & read it. That’s the only way to know for sure.
MSD, which comes with DOS is great but no speed check.
Meephead - Thanks for the link to the freeware!
It’s exactly what I need. Thanks also to everyone else for their suggestions.
Really? Hmmm. On the top of the chip? I only have my laptop with me right now and I’m sure as hell not going to crack this sucker open. Maybe I’m just going blind or something.
How come every time I run it I get a completely different speed?
“How come every time I run it I get a completely different speed?”
Probably because it doesn’t recognize your chip properly. I don’t use that program anymore.