Part Number	Frequency	Features	BIOS	PCB	Notes
Intel Celeron
RB80526RY800128 BX80526F800128	800		1023.001	Any
RB80526RY850128 BX80526F850128	850		1023.001	Any
RB80526RY900128 BX80526F900128	900		1023.001	Any
RB80526RY950128 BX80526F950128	950		1023.001	Any
Intel Pentium III
RB80526PY600256 BX80526F600256	600E MHz		1023.001	Any
RB80526PZ600256 BX80526C600256	600EB MHz		1023.001	Any
RB80526PY650256 BX80526F667256	650 MHz		1023.001	Any
RB80526PZ667256 BX80526F667256	667 MHz		1023.001	Any
RB80526PY700256 BX80526F700256	700 MHz		1023.001	Any
RB80526PZ733256 BX80526F733256	733 MHz		1023.001	Any
RB80526PY750256 BX80526F750256	750 MHz		1023.001	Any
RB80526PY800256 BX80526F800256E	800 MHz		1023.001	Any
RB80526PZ800256 BX80526C800256E	800EB MHz		1023.001	Any
RB80526PY850256 BX80526F850256	850 MHz		1023.001	Any
RB80526PZ866256 BX80526C866256 RK80526PZ866256	866 MHz		1023.001	Any
RB80526PZ933256 BX80526C933256 RK80526PZ933256	933 MHz		1023.001	Any
RB80526PZ001256 BX80526C1000256 RK80526PZ001256 BX80526C1000256	1.0B GHz		1023.001	Any

Part numbers are not supplied by motherboard manufacturers. We use best guess approach to determine part numbers based on CPU model, frequency and features. In some cases our guess may be incorrect or incomplete. Please always verify part numbers before committing to buying the CPU.