He makes no statement about its operation under load Andreas. I've had PCs that overclocked for 20 or 30 minutes under heavy load, then crashed. Since most operations under MorphOS are not that CPU intensive, I could see a Mac Mini running under MorphOS at 1.83 exhitbiting fairly good stability and only crashing every once in awhile.

Although, if the Mac Minis do use a 7447B, then operating at this speed is only a little above what the best of those could do. Since some third party upgrades used to run at 2.0GVhz, I have no reason to doubt that it can be done. It's just pushing it a bit.

I frequently reply to the wrong message. Just following the entire content of the thread.