Several years ago I got a 9500 and a 9600, both with a G4/800 processor card, from eBay, and when the 9500 went away it's G4 card went into an 8600/200. Still have both machines though the 8600 has been downgraded to a G3/450. Some time later I got a dual processor MDD that sits and cranks away on some scientific programs most of the time.