Below is a list of microprocessor-related IBM part numbers I compiled over
time. This information came from many different sources, and not all
of these sources may be correct.
If you have additional information or correction to the listed
part numbers, or if you have information about non-listed part numbers
please post a comment.
| IBM part number | Package | Description |
| 03H4831 | | 80486BL3 20/60 |
| 03H4938 | Ceramic PGA | 80486DX2-50 |
| 03H4939 | Ceramic PGA | 80486DX2-66 |
| 03H8404 | Ceramic PGA | 80486 25/50? (marked 03H8343 on the back) |
| 03H8585 | Ceramic PGA | 80486 25/50? (marked 03H8343 on the back) |
| 23F7189 | | 80386DX |
| 26H6760 | 132-pin QFP | 80486DX4-75 |
| 33G0392 | 100-pin QFP | 486SLC2 25/50 (?) |
| 33G0395 | 100-pin QFP | 486SLC2-66 (?) |
| 33G0400 | 100-pin QFP | 486SLC2 |
| 42G2866 | Ceramic PGA | Intel i960 |
| 49G2988 | Ceramic PGA with heatsink | 80486DX2-50 overdrive processor (FRU92F0147) |
| 50G3588 | 100-pin QFP | 80486 in 80386 package 20/60 (?) |
| 50G3589 | 100-pin QFP | 80486DLC2-66 |
| 50G6663 | | 80486SLC2-66, was used on Make it 486 upgrade board |
| 50G7261 | | 80486SLC2-50 (?) |
| 50G7262 | 100-pin QFP | 80486SLC on Evergreen 286 upgrade module |
| 50G6950 | | 80486SLC2-50 |
| 51F1784 | PGA in aluminium case | 80386DX-20 |
| 63F7615 | PGA in aluminium case | 80386 |
| 63G9145 | Ceramic PGA | 80486DX-33 (PGA) |
| 63G9560 | | 80486BL3 20/60 (?) |
| 64G2844 | | Lightning 486 processor |
| 64G2845 | 132-pin QFP | 80486 CPU (33 MHz?) |
| 92F0100 | | 80487 |
| 92F0147 | Ceramic PGA with heatsink | 80486DX2-50 overdrive processor |
| 92F2582 | Ceramic PGA with heatsink | 80486DX2-66 overdrive processor |
think i need glasses should b 06H7718 not 06H7716
07H5034
07H5034 >> A80501-60 (no FDIV bug) replacement part for 06H7716 >> A80501-60 (with FDIV bug)
50G7262
should be 486SLC2 50/66 according evergreen page on archive.org
IBM 33G0395
Hi all
IBM 33G0395 is 486 SLC2 66Mhz (33x2)
I have a motherboard with this chip.
Best Rgrds
Sten
50G6950
80486SLC2-50, PQFP-100, 2.28 x 2.28 cm, clock-doubled CPU (25MHz).
33G0400
I think that this CPU should run on 20Mhz external, (40Mhz internal)
More information on 23F7189...
These are commonly called "silvercaps". It' an Intel 386DX core in IBM packaging. For this particular FRU (there are FRUs of 51F1797 & 63F7615 that return CPUIDs of 0305h) it has been the only 'C' step 386DX (CPUID 0303h is the 'B' steps, 0305h starts the 'D' steps...) I have ever heard about, returning a CPUID of 0304h!
IBM486BLX3
Hi Gennadiy, I found this mainboard:
http://saul.pointclark.net/m/A-B/32079.htm
It has one CPU 486BLX3 (132-pin) at 25/75 MHz.
the number on the top is 50G3589.
Ciao!
Vinicio from Italy