Microcodes.

XXX-YY-Z

XXX - CPUID
YY  - version of microcode
Z   - "P" = "Socket"-package

PPRO (P6)
611	Pentium Pro	0.40/0.28-tech	256kB/512kB/1MB L2	Socket8
612	Pentium Pro	0.40/0.28-tech	256kB/512kB/1MB L2	Socket8
616	Pentium Pro	0.40/0.28-tech	256kB/512kB/1MB L2	Socket8
617	Pentium Pro	0.40/0.28-tech	256kB/512kB/1MB L2	Socket8
619	Pentium Pro	0.40/0.28-tech	256kB/512kB/1MB L2	Socket8

1632	Pentium II Overdrive (for PPro)	0.40 	512kB		Socket8
-630	Pentium II	Klamath		0.28	non-produced	Socket8-?
-632	Pentium II	Klamath		0.28	non-produced	Socket8-?
-633	Pentium II	Klamath		0.28	non-produced	Socket8-?
-634	Pentium II	Klamath		0.28	non-produced	Socket8-?


P2/P3
CPUID/Step CPU Name	CPU Core	Tech	L2-size	Ext-s	Connector type
--------------------------------------------------------------------------------------
633	Pentium II	Klamath		0.28	512kB	ext.L2	Slot1
634	Pentium II	Klamath		0.28	512kB	ext.L2	Slot1

633	Celeron		Covington	0.28	0kB	none L2	Slot1
634	Celeron		Covington	0.28	0kB	none L2	Slot1

650	Pentium II	Deshutes	0.25	512kB	ext.L2	Slot1
651	Pentium II	Deshutes	0.25	512kB	ext.L2	Slot1
652	Pentium II	Deshutes	0.25	512kB	ext.L2	Slot1
653	Pentium II	Deshutes	0.25	512kB	ext.L2	Slot1

660	Celeron		Mendocino	0.25	128kB		Slot1
665	Celeron		Mendocino	0.25	128kB		Socket370 PPGA

-670	Pentium III	Katmai		0.25	512kB	ext.L2	Slot1
-671	Pentium III	Katmai		0.25	512kB	ext.L2	Slot1
672	Pentium III	Katmai		0.25	512kB	ext.L2	Slot1
673	Pentium III	Katmai		0.25	512kB	ext.L2	Slot1

-680	Pentium III	Coppermine	0.18	256kB		Slot1
681	Pentium III	Coppermine	0.18	256kB		Slot1
683	Pentium III	Coppermine	0.18	256kB		Slot1
686	Pentium III	Coppermine	0.18	256kB		Slot1
68A	Pentium III	Coppermine	0.18	256kB		Slot1

681	Pentium III	Coppermine	0.18	256kB		Socket370 FC-PGA
683	Pentium III	Coppermine	0.18	256kB		Socket370 FC-PGA
686	Pentium III	Coppermine	0.18	256kB		Socket370 FC-PGA
68A	Pentium III	Coppermine	0.18	256kB		Socket370 FC-PGA

p681	Celeron		Coppermine	0.18	256kB		Socket370 PPGA
681	Celeron		Coppermine	0.18	256kB		Socket370 FC-PGA
683	Celeron		Coppermine	0.18	256kB		Socket370 FC-PGA
686	Celeron		Coppermine	0.18	256kB		Socket370 FC-PGA
68A	Celeron		Coppermine	0.18	256kB		Socket370 FC-PGA

696	?

6A0	Xeon Pentium III	Cascades
6A1	Xeon Pentium III	Cascades
!6A4	Xeon Pentium III	Cascades	1-2Mb	Wanted!

-6B0	Pentium III	Tualatin	0.18	256kB	non-produced
6B1	Pentium III	Tualatin	0.18	256kB		Socket370 FC-PGA
6B1	Pentium III	Tualatin	0.18	256kB		Socket370 FC-PGA2
6B4	Pentium III	Tualatin	0.18	256kB		Socket370 FC-PGA2

6B1	Celeron		Tualatin	0.18	256kB		Socket370 FC-PGA2
6B4	Celeron		Tualatin	0.18	256kB		Socket370 FC-PGA2


Pentium 4
CPUID/Step CPU Name	CPU Core	Tech	L2-size	Ext-s	Connector type
--------------------------------------------------------------------------------------
F00 C1	Pentium 4	Willamette	0.18	256kB		Socket423

F01	?
F02	?
F03	?
F04	?
F05	?

F07 B2	Pentium 4	Willamette	0.18	256kB		Socket423
F0A C1	Pentium 4	Willamette	0.18	256kB		Socket423
F0A C1	Pentium 4	Willamette	0.18	256kB		Socket478

F12 D0	Pentium 4	Willamette	0.18	256kB		Socket423
F12 D0	Pentium 4	Willamette	0.18	256kB		Socket478

F13 E0	Celeron		Willamette-128	0.18	128kB		Socket478

F23	?

F24 B0	Pentium 4	Northwood	0.13	512kB		Socket478

F25 M0	Pentium 4 EE	Gallatin	0.13	512kB	2Mb L3	Socket478
F25 M0	Pentium 4 EE	Gallatin	0.13	512kB	2Mb L3	LGA775
F25 M0	Pentium 4	Prescott	0.13	1Mb		Socket478

F27 C1	Pentium 4	Northwood	0.13	512kB		Socket478
F29 D1	Pentium 4	Northwood	0.13	512kB		Socket478

F27 C1	Celeron		Northwood-128	0.13	128kB		Socket478
F29 D1	Celeron		Northwood-128	0.13	128kB		Socket478

F33 C0	Pentium 4	Prescott	0.09 	1Mb		0D - Socket478/LGA775-?
F33 C0	Celeron-D	Prescott-256	0.09	256kB		0D - Socket478-?
*F34 D0	Pentium 4	Prescott	0.09 	1Mb	5kB!	9D - Socket478-?
*F34 D0	Pentium 4	Prescott	0.09 	1Mb	6kB!	1D - LGA775-?


?F37	Pentium 4	Prescott-?	0.09 	1Mb-?		0D - Socket478/LGA775


Xeon
CPUID/Step CPU Name	CPU Core	Tech	L2-size	Ext-s	Connector type
--------------------------------------------------------------------------------------
F0A C1	Xeon		Willamette	0.18	256kB		Socket603

F11 C0	Xeon MP		Foster		0.18	256kB	512kB	Socket603-?
F11 C0	Xeon MP		Foster		0.18	256kB	1Mb L3	Socket603-?


F12 D0	Xeon		Willamette	0.18	256kB		Socket603


!F22 A0	Xeon MP		Prestonia	0.18	512kB	1Mb L3	Socket603 Wanted!	
!F22 A0	Xeon MP		Prestonia	0.18	512kB	2Mb L3	Socket603 Wanted!	

F24 B0	Xeon		Northwood	0.13	512kB		Socket603

F25 B1	Xeon MP		Gallatin	0.13	512kB	1Mb L3	Socket603
F25 B1	Xeon MP		Gallatin	0.13	512kB	2Mb L3	Socket603

F25 M0	Xeon		Gallatin	0.13	512kB		Socket604
F25 M0	Xeon		Gallatin	0.13	512kB	1Mb L3	Socket604
F25 M0	Xeon		Gallatin	0.13	512kB	2Mb L3	Socket604

!F26 C0	Xeon		Gallatin	0.13	512kB	2Mb	Socket603 Wanted!

F27 C1	Xeon		Northwood	0.13	512kB		Socket604
F29 D1	Xeon		Northwood	0.13	512kB		Socket604

*F34 D0	Xeon		Prescott/FSB800	0.09 	1Mb	6kB!	1D - Socket604
