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To: Joe NYC who wrote (40697)	4/25/2000 2:05:00 AM
From: jim kelley	Respond to of 93625

Of course not you are... DDR component supporters maintain that this device is an evolutionary product, because it is a synchronous DRAM with additional features. However, DDR is not evolutionary to system manufacturers. A DDR-based system requires a separate motherboard with a new layout, connectors and components which are not compatible with an SDRAM memory subsystem. Further, DDR-based motherboards are expected to encounter layout and implementation problems because of its non-evolutionary nature. hardwarecentral.com As one of the investors said earlier this week, he has not met an engineer who has not thought that he knew better than the next guy. <LOL>

To: Joe NYC who wrote (40697)	4/25/2000 4:26:00 AM
From: Tenchusatsu	Read Replies (2) \| Respond to of 93625

Joe, <Just off the top of my head, you have Intel, AMD, Via, ServerWorks, Micron all working on DDR chipsets. Given recent debacles of Intel chipset division, do you think that Intel is the most competent of all these teams?> There are two groups who do chipsets at Intel. One is PCG in Folsom, CA, which does desktop chipsets like the 820, 840, 810, 815, and the Tehama chipsets. The other is SWCD, which does server chipsets like 450NX (Xeon), 460GX (Itanium), and 870 (McKinley and Foster). It's SWCD who's doing DDR, not those slackers <G> in Folsom. I think Pat Gelsinger is speaking from the point-of-view of desktop chipsets. Certainly there are different challenges and different requirements between servers and mainstream PCs. It's not that DDR requires 12-layer motherboards (as Jim mistakenly assumes). It's just that since servers already have 12-layer (or more) motherboards, the electrical problems of DDR become a non-issue. I'm sure DDR can be implemented on 6-layer motherboards, which is what Athlon requires anyway. It'll just take a lot of engineering effort. On the other hand, I really don't think dual-channel DDR can easily be implemented with just a 6-layer motherboard. That leaves RDRAM with a big advantage once the Willamette/Tehama platform rolls around. (Heck, even the 840 chipset implements dual RDRAM channels, and demonstrates good performance with low latency.) Tenchusatsu