So I followed this guide to overclock my 733mhz DA to 867mhz. It worked fine at first, so I took it back out to apply arctic silver. Popped it back in, dosen't boot, stuck on the loading screen. I shutdown, repower on, works fine! I look at the system profile, it's rated at 800mhz now! The weird thing is that I put that same OCed CPU into another G4, it shows up at 867mhz Do I need to reset something? BIOS? (i'm a Mac noob ) thanks!