My Computer Collection
IBM PS/2 Model 57SLC3

Photo of IBM PS/2 Model 57SLC3
Click here or click onto the photo for a full size version of this picture.

I was a bit too late at the junkyard and the computer was already torn into pieces when I showed up. I was only able to rescue the power supply and PCBs :-(

When I said that the SLC2 was IBM's last step in the development of the 56/57, this was actually only halfway true. It's true when you only count the CPUs with a 386SX-style pinout. The processor used in the SLC3 actually is a DLC3, i.e. a processor with a 386DX-pinout which is here only used with a 16-bit data bus. IBM simply took the planar of the SLC2 and redesigned the the part around the CPU for the DLC3. Needless to say, the performance gain is limited because only things that are small enough to fit into the 16K cache will run faster by 50%, the bus interface is still as slow as a good-old 386SX. This variant may be regarded as an afterthought of the 56/57 model line, and this one is the only machine of this type I have seen so far.

Photo of IBM PS/2 Model 57SLC3's back
Click here or click onto the photo for a full size version of this picture.

The detail photo of the planar shows clearly that IBM didn't spend much effort into the redesign: The chance of accessing the PS/2 SIMMs at their full width stayed unused, and even the coprocessor socket is still for a 387SX...

IBM 486DLC3 @ 75 MHz
(used with 16-bit-mode only)
Cyrix 83S87 @ 25 MHz
16K internally in CPU
12 Mbytes (options range from 4M to 16M)
5 MCA slots (16 bit)
Interfaces (onboard):
  • Mouse, Keyboard
  • 2 x Serial
  • 1 x Parallel
  • Floppy (2.88M), allows attachment of up to 3(!) drives
  • SCSI (narrow)
  • XGA-2
Add-on cards:
  • none
Operating System(s):
  • Linux 2.0 (Slackware-based)
Useful Links:

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©1999 Alfred Arnold,