Here’s an overview of where the LC 475 project has ended up after the last few weeks of modifications. This started as a fairly ordinary 25 MHz 68LC040 pizza-box Macintosh.

It is not particularly ordinary anymore.

By this point I’ve:

  • overclocked the motherboard from 25 MHz to 33 MHz
  • experimented with replacing the FPU-less 68LC040 with a full 68040
  • expanded and experimented with the VRAM
  • installed 36 MB of system RAM
  • replaced the mechanical SCSI hard drive with solid-state storage through the PCD-60B
  • added PDS Ethernet
  • reduced the fan speed and noise
  • replaced the logic-board capacitors with tantalums

Not bad for the little Macintosh I originally bought just to play around with.

There are still a few loose ends, particularly the questionable full 68040 replacement, but as a usable retro Mac this thing is coming together very nicely.

Now I just need to load it full of games and we’ll be away.

Go team AppleTalk!