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To: Elmer who wrote (152669)12/17/2001 12:06:27 PM
From: Tony Viola  Read Replies (1) | Respond to of 186894
 
Elmer,

Article about asynchronous chips, mentions the P4 as having some asynchronous logic. This part not too good (if you have ten flops running at 700 MHz, unless the rest of the processor has to wait for them, they aren't going to slow down the mainstream logic):

In fact, where a synchronized processor will operate only as quickly as the slowest of its parts - some 700 megahertz processors work more quickly than other 1 gigahertz processors - asynchronous processors operate at the average speed of their components.

The article mentions computer aided design as being an area where asynchronous chips would have a drawback because essentially all design tools assume synchronous design. DVT and all subsequent down the line testing, of course would also be a pain. Someday, maybe.

iht.com

Tony