Um-m-m. For 117MHz versions of the same, I paid USD46 (Apr. 2004, NUpowr, working perfectly), USD31 (Jan. 2007, Holy Smoke partially escaped) and USD7 (Jun. 2007, still not installed). Best of luck.
de

Click to expand...

Yes, a spot of luck it certainly would be.

Meanwhile, back on planet earth ... one of these days I'll get around to posting it on eBay and see what I can get. $30-$40 would suit me fine. (Actually, I think mine must be the 117 Nupower: that rings a bell.)

I keep my 68k machines 68k, so the first thing I did upon getting a 540c with the ppc upgrade installed was to whip it out and return the poor thing to its natural state of 68LC040 purity. Each to his own, I suppose, but in general usage, I find a fast 68k chip much snappier than a slow 603. Remember that this thing can run 7.1 Pro, or better still, a stripped-down 7.1 Pro, which absolutely blazes along on a fast 68k.

All System 7 versions are in my experience also more stable on 68k hardware. Even plain-Jane System 7.5 has proven to be solid. So there are lots of advantages in Keeping It Simple, Soldier.