I hope this will help:
Number of cores 1 (max 1)
Number of threads 1 (max 1)
Name Intel Pentium III
Codename Katmai
Specification
Package (platform ID) Slot 1 SECC2 (0x0)
CPUID 6.7.3
Extended CPUID 6.7
Core Stepping kC0
Technology 0.25 um
Core Speed 448.6 MHz
Multiplier x FSB 4.5 x 99.7 MHz
Stock frequency 450 MHz
Instructions sets MMX, SSE
L1 Data cache 16 KBytes, 4-way set associative, 32-byte line size
L1 Instruction cache 16 KBytes, 4-way set associative, 32-byte line size
L2 cache 512 KBytes, 4-way set associative, 32-byte line size
FID/VID Control no
My motherboard is SIEMENS AG D1107 and this is my processor:

My BIOS is very old (Phoenix 07/05/99) so no way I can change the FSB settings from it.
I'm going to buy a new processor but until I haven`t got my hands on a new one, I want to overclock current.
I would be pleased if someone responds.