I'm almost sure this is a dumb question. I'm still on an Athlon XP1700+
(w/ an Asus A7V266-E), but I believe that I need a bit more octane
because things are slowing down to a level of concern.

I believe the XP2600+ is the highest CPU that is FSB 266. However,
there are also XP2600+ with FSB 333.

My (dumb) question is: If I put the XP2600+ w/FSB 333 on my FSB 266
mobo, will I have a problem, or will it just be a matter of my not
getting the full capability of the chip?

TIA,
Ken