Its the latest rev.6 (71E41J)
The Apollo has the Mach -131 chipset.
All components are cooled ... problem seems to be the CPU.
If you know the Falcon060-boards, they are running between 90 - 105 Mhz.
Only limited by the CPU ...
Nice feature on the Falcon060-board, it has a programmable CT-ClockModule.
A must have for upcoming Classic-Acc...
http://www.powerphenix.com/CT60/english/CTCM.htm
But now I reached a good state at 90Mhz .. system is nice like it is.