| Part Number | Frequency | Features | BIOS | PCB | Notes |
|---|
| Intel Pentium II |
80523PY350512
80523PY350512PE
B80523P350512E
BX80523U350512E | 350 MHz | | Any | Any | |
80523PY350512
80523PY350512PE
B80523P350512E
BX80523U350512E | 350 MHz | Slot 1 | Any | Any | |
80523PY400512
80523PY400512PE
B80523P400512E
BX80523U400512E | 400 MHz | | Any | Any | |
80523PY400512
80523PY400512PE
B80523P400512E
BX80523U400512E | 400 MHz | Slot 1 | Any | Any | |
80523PY450512
80523PY450512PE
B80523P450512E
BX80523U450512E | 450 MHz | | Any | Any | |
80523PY450512
80523PY450512PE
B80523P450512E
BX80523U450512E | 450 MHz | Slot 1 | Any | Any | |
| Intel Pentium III |
80525PY450512
BX80525U450512 | 450 MHz | Slot 1 | Any | Any | |
80525PY450512
BX80525U450512
BX80525U450512E | 450 MHz | socket370 with S370-DL | Any | Any | |
80525PY500512
BX80525U500512 | 500 MHz | Slot 1 | Any | Any | |
80525PZ533512
BX80525U533512 | 533B MHz | Slot 1 | 1025.001 | Any | |
RB80526PZ533256
BX80526F533256E | 533B MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PZ533256
BX80526U533256 | 533EB MHz | Slot 1 | 1025.001 | Any | |
RB80526PZ533256
BX80526F533256E | 533EB MHz | socket370 with S370-DL | 1025.001 | Any | |
80525PY550512
BX80525U550512 | 550 MHz | Slot 1 | 1025.001 | Any | |
80526PY550256
BX80526U550256 | 550E MHz | Slot 1 | 1025.001 | Any | |
RB80526PY550256
BX80526F550256 | 550E MHz | socket370 with S370-DL | 1025.001 | Any | |
80525PY600512
BX80525U600512 | 600 MHz | Slot 1 | 1025.001 | Any | |
RB80526PY600256
BX80526F600256 | 600 MHz | socket370 with S370-DL | 1025.001 | Any | |
80525PZ600512
BX80525H600512 | 600B MHz | Slot 1 | 1025.001 | Any | |
RB80526PZ600256
BX80526C600256 | 600B MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PY600256
BX80526PY600256 | 600E MHz | Slot 1 | 1025.001 | Any | |
RB80526PY600256
BX80526F600256 | 600E MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PZ600256
BX80526U600256 | 600EB MHz | Slot 1 | 1025.001 | Any | |
RB80526PZ600256
BX80526C600256 | 600EB MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PY650256
BX80526U650256 | 650 MHz | Slot 1 | 1025.001 | Any | |
RB80526PY650256
BX80526F667256 | 650 MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PZ667256
BX80526U667256 | 667 MHz | Slot 1 | 1025.001 | Any | |
RB80526PZ667256
BX80526F667256 | 667 MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PY700256
BX80526U700256 | 700 MHz | Slot 1 | 1025.001 | Any | |
RB80526PY700256
BX80526F700256 | 700 MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PZ733256
BX80526U733256 | 733 MHz | Slot 1 | 1025.001 | Any | |
RB80526PZ733256
BX80526F733256 | 733 MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PY750256
BX80526U750256 | 750 MHz | Slot 1 | 1025.001 | Any | |
RB80526PY750256
BX80526F750256 | 750 MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PY800256
BX80526H800256 | 800 MHz | Slot 1 | 1025.001 | Any | |
RB80526PY800256
BX80526F800256E | 800 MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PZ800256
BX80526U800256 | 800EB MHz | Slot 1 | 1025.001 | Any | |
| | 800EB MHz | socket370 with S370-DL | 1025.001 | Any | |
80526PY850256
BX80526U850256 | 850 MHz | Slot 1 | 1025.001 | Any | |
80526PZ866256
BX80526U866256 | 866 MHz | | 1025.001 | Any | |
80526PZ866256
BX80526U866256
KC80526PZ866256 | 866 MHz | Slot 1 | 1025.001 | Any | |
| | 900 MHz | | 1025.001 | Any | |
| | 900 MHz | Slot 1 | 1025.001 | Any | |
80526PZ933256
BX80526U933256 | 933 MHz | | 1025.001 | Any | |
80526PZ933256
BX80526U933256 | 933 MHz | Slot 1 | 1025.001 | Any | |
80526PY1000256
BX80526H1000256 | 1.0 GHz | Slot 1 | Any | Any | |
80526PZ1000256
BX80526PZ1000256 | 1.0B GHz | Slot 1 | Any | Any | |
When 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.