Well, if it is really important to you, reset your CMOS chip so it goes back to its original settings and post what the actual processor speed is. It is always good to know what CPU you have BEFORE OC it, keep that in mind for future reference. If you got it like this, already OCed, it won't hurt it to reset the BIOS and check to see what speed it really runs at.
EDIT:
I'm looking at the AMD Athlon XP chart and there isn't a CPU under 1333MHz actual speed. The highest standard multiplier is also 8x so I don't know why yours would say 100x10.5. Maybe I'm missing something. When you reset the BIOS do you use a jumper or just an option in the BIOS? I'm not big on OCing my system so I don't know much about what could cause yours to say that. Maybe someone else could give you some more information...