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Politics : Formerly About Advanced Micro Devices
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To: Tenchusatsu who wrote (44194)12/28/1998 8:41:00 PM
From: Bill Jackson  Read Replies (1) of 1572921
 
Tenchusatsu, As they say, 'what price glory?', and that extra realestate will cost in area and in yield, one hopes the benefits offset the costs. One hopes that going to .18 will decrease the space occupied as well as increase the yield? As to putting 512K to 1M cache? severs probably need to 1M for optimum throughput as they exist to serve and the queue is known so even large caches can be justified for their speed and tasks can be alternated amongst the different CPUs to allow for refilling to give sustained high throughput. With business and consumer tasks you can satisfy CPU demand for local cache 95% of the time with 128K, going to 256K takes you up to 97% to 512K 97.5% and you never get to 100% cache hit rate until your cache is the same size as main memory. So I expect they will make a will try to keep the cache as small as they can so they get the east benefits and only go to larger cache once they go to 0.18 as a balancing act between yield and size?
As to xeons, I was not sure that AMD had solved the sharing problems, but since Alpha has solved them then AMD will use that solution and will be able to field entries in that arena in the third quarter on 1999?

As you say they are both bumping into absolute limits and each new gain is smaller and this leads to commoditization.
What's next?, copper? Gallium Arsenide?

Bill
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