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To: Harvey Allen who wrote (69628)	1/31/2002 7:28:02 AM
From: Dan3	Respond to of 275872

Re: It looks like memory bandwidth with DDR. It's being outrun by the P4. PC266 (DDR 2100) has higher bandwidth than Rambus PC800 (21/16). But the 850 supports two memory channels instead of one, which makes the ratio (2*1600)/2100 or 32/21. Dual DDR channels for P4 will be in the next set of chipsets, which will make their boards more expensive, but also give them much higher bandwidth than the currently available Rambus solution.

To: Harvey Allen who wrote (69628)	1/31/2002 7:41:28 AM
From: dhellman	Read Replies (1) \| Respond to of 275872

P4 out-running DDR; which is why AMD used P4 with DDR for the 2.2 comparison to XP2000+ Interesting how the crossover occurs right at 2.2 GHZ The slide shows 2.0 with DDR out performing 2.0 with RDR. Anixter said AMD showed the DDR compare because AMD sees DDR as the future memory and so does Intel ..... then he said when they substituted RDR on the 2.2 it was still edged out by the XP2000+ They should have posted the 2.2 RDR bar on that graph. An obvious obfuscation bordering on FUD. d veracast.com John- Not throttling. They ran the same processor on an 850 system and it ran in line with expectations for the overclock. It looks like memory bandwidth with DDR. It's being outrun by the P4. Harvey