IDTI - Dark Horse For '96 ? Message Board

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Technology Stocks : IDTI - Dark Horse For '96 ?

IDTI 48.99

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Mar 29 5:00 PM EST

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To: Craig Lawler who wrote (568)	2/22/1996 7:17:00 PM
From: Jean Luc	of 1139

Craig, The PentiumPro chip is packaged with two dies inside, one is the CPU itself(including a small L1 cache), and the other is the L2 cache. So unlike what your friend said, the cache IS on chip. Logically, the L2 cache on Pentium Pro is simply a L2 cache with its own dedicated bus.(Nexgen's 5x86 chip has the same bus, but use the cache on the mother board instead.) The advantage to pack the L2 cache on chip is to have it more closely integrated with the CPU, the disadvantage is that it is very costly to make such MtultiDie Package, and it is hard for the system board makers to add more cache without resort to some very complicated 3 level cache logic. (L3 cache does exsit in some large mainframe computers though). In my mind, this one chip approach is not going to be used widely. A Pentium Pro with a seperated L2 cache makes more sense. One thing is clear, the Pentium/PentiumPro demands more cache than it is offered now. I fully agree with Mr. Jimmy Lee that the sale of SRAM will pick up as more Pemtiums are sold. Thanks. JL. [End

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