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To: jim kelley who wrote (40910)	4/26/2000 9:33:00 AM
From: gnuman	Read Replies (1) \| Respond to of 93625

Kelley, re: <No one is talking about any clock speeds higher than 266MHZ for DDR.> Clearly you don't understand what clock speeds mean in terms of device bandwidth.

To: jim kelley who wrote (40910)	4/26/2000 9:43:00 AM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi jim kelley; Re: No one is talking about any clock speeds higher than 266MHZ for DDR. Wrong. It's been the talk of the memory community for months. Here are some old articles, with data rates up to 600Mbits/sec/pin for DDR: Semi manufacturers to develop fast DDR SDRAM standard Desi Rhoden, chairman of JEDEC, said the committee will meet this week to begin hammering out a PC3200 industry standard. When placed in a DIMM, the faster DDR SDRAM is purported to offer a 3.2-Gbyte/s bandwidth, the same rate achieved by dual-channel Direct RDRAM shipping in a RIMM module. ... When it debuts, PC3200 SDRAM is expected to enable Advanced Micro Devices Inc.'s Athlon processors to match the 3.2-Gbyte/s data rates of the upcoming Intel Willamette MPUs. In the meantime, the first DDR Athlons using PC2100 modules are slated to debut midyear, with a 2.1-Gbyte/s data rate twice that of the PC133 SDRAMs used by Intel's Pentium IIIs. techweb.com Respun double-data-rate memory promises up to 600 Mbits/second per pin As a result, the same 100-MHz SDRAM core that became a 200-Mbit/s-per-pin DDR device will jump to 400 Mbits/s per pin with DDR-II. techweb.com -- Carl P.S. Where is John Walliker when you need him? He was so much more challenging.