The iMac's system bus speed has been stuck at 100mHz for nearly two years. I suppose it won't get bumped up to 133mHz until after the system bus speed for the PowerMac line gets an increase. How difficult would it be for Apple to increase the bus speed of the iMac? Would they have to redesign the motherboard? And is an L3 cache completely out of the question? Does anybody think there's a chance will see an iMac with a 1gHz processor and 133mHz system bus at MWSF? On edit: actually, I think it's been MORE than two years since the last increase in system bus speed. I think the original iMac had a 66mHz system bus, which was bumped up to 100mHz when the slot-loading drive iMac was introduced in late 1999.