Part Number	Frequency	Features	BIOS	PCB	Notes
Intel Celeron
RB80526RX533128 BX80526F533128	533A MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX566128 BX80526F566128	566 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX600128 BX80526F600128	600 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX633128 BX80526F633128	633 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX667128 BX80526F667128	667 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX700128 BX80526F700128	700 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX733128 BX80526F733128	733 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RX766128 BX80526F766128	766 MHz	66 MHz FSB, FC-PGA	AE25SR41
RB80526RY800128 BX80526F800128	800 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526RY850128 BX80526F850128	850 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526RY900128 BX80526F900128	900 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526RY950128 BX80526F950128	950 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526RY001128 BX80526F1000128	1.00 GHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526RY005128 BX80526F1100128	1.10 GHz	100 MHz FSB, FC-PGA	AE25SR41
RK80530RY017256 BX80530F1400256	1.40 GHz	100 MHz FSB, FC-PGA2	AE25SR41
Intel Pentium III
RB80526PY500256 BX80526F500256	500E MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526PZ533256 BX80526F533256E	533EB MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PY550256 BX80526F550256	550E MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526PY600256 BX80526F600256	600E MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526PZ600256 BX80526C600256	600EB MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PY650256 BX80526F667256	650 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526PZ667256 BX80526F667256	667 MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PY700256 BX80526F700256	700 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526PZ733256 BX80526F733256	733 MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PY750256 BX80526F750256	750 MHz	100 MHz FSB, FC-PGA	AE25SR41
RB80526PZ800256 BX80526C800256E	800EB MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PZ866256 BX80526C866256	866 MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PZ933256 BX80526C933256	933 MHz	133 MHz FSB, FC-PGA	AE25SR41
RB80526PZ001256 BX80526C1000256	1.00 GHz	133 MHz FSB, FC-PGA	AE25SR41
RK80526PZ006256	1.13 GHz	133 MHz FSB, FC-PGA	AE25SR41
RK80526PZ006256	1.13 GHz	133 MHz FSB, FC-PGA2	AE25SR41		*
RK80530PZ009256 BX80530C1200256	1.20 GHz	133 MHz FSB, FC-PGA2	AE25SR41

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.