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To: Ted Foster who wrote (56142)	4/9/1999 11:35:00 AM
From: rudedog	Respond to of 97611

Ted - The current crop of high end 64 bit designs all attempt to increase parallel execution through out of order processing, partial product results, multiple path preprocessing, etc. The differences are in how much silicon is devoted to automating that capability, and which areas receive emphasis. This is closely linked to compiler technology, since a well ordered instruction stream with "hints" about parallel execution allow silicon to be devoted to other uses. This is a very complex subject but the high level answer is that each processor design has an edge for certain kinds of work, so the way the mainstream uses these capabilities has a lot to do with who wins the feature race.