Question on the 100MHz. How was that done? Just put Rev 6 060 and 100MHz oscillator? Or more mods need to be done on board?
You basically just move two jumpers. The board thinks it is running in 040 mode, so the board itself is not overclocked, only the CPU (which is clock-doubled in 040 mode). RAM and SCSI (if attached) run at the normal 50Mhz. CPU is clock doubled (like an 040 would be), so a 50MHz Rev 6 060 will run at 100MHz. You need of course the 100MHz Oscillator. It is a relatively easy change. I did it myself on my own MK-2 and it's completely stable at 100MHz. Definitely recommended to run the 060 with a heatsink and fan though. For sure you notice a difference at 100Mhz - it is faster for sure. But you are bottle-necked a bit by the memory at 50Mhz. Still worth it by a long shot, in my opinion, which is why I did it to my MK-2