I know there is another thread but I thought maybe just for results to compare: http://www.zdnet.de/enterprise/mac/hardware/0,39038647,39192217,00.htm http://www.zdnet.de/downloads/prg/q/i/deP0QI-wc.html Can anyone who has tried this on a 2008 mac pro post their results? I imagine the more ram and the more cores will make it tougher to do, but I am very excited to see how this works on my MP. edit: on my 8core 3.2, 3.312 seems to be very safe. Much over that and I get a kernel crash after errors. Overclocking 8 1GB sticks of ram is going to be very hard no matter what. The cpu's could probably go much further even without more voltage.