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Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 236.73

-6.1%

Jan 30 9:30 AM EST

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To: Joe NYC who wrote (79795)	5/8/2002 5:31:11 PM
From: combjelly	Read Replies (2) of 275872

"Wouldn't HTT-like memory interface suffer from latency penalty" Why? All of these interfaces, DRDRAM, SDRAM, DDR, DDRII are all interfaces to the essentially unchanged DRAM core from the 1970's. DRDRAM gets an awful lot of it's latency because of it's otherwise clever daisy-chain scheme. It has to allow for the signals to propagate through the arrays and back again. HTT used as a memory interface would have the problem that it would be inherently shallow, i.e. it's point to point. But there wouldn't be the propagation delays because of this either. It would also have the nice property that as you add memory, your bandwidth goes up. It's downside is that your memory expansion is limited by the number of HTT ports, so for very large memory arrays, you would need to have HTT switches that would add some to the latency.

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