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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Charles R who wrote (90898)	2/1/2000 2:57:00 PM
From: Cirruslvr	Read Replies (1) \| Respond to of 1572361

Chuck - RE: "So, I guess February 27th or thereabouts) may be the time for phantom launch of 850/866." Amazing, huh? Intel will keep "announcing" new processors when they can't even deliver lower MHz processors until about the time the new processors come out.

To: Charles R who wrote (90898)	2/1/2000 11:56:00 PM
From: THE WATSONYOUTH	Read Replies (2) \| Respond to of 1572361

Re: "So, I guess February 27th or thereabouts) may be the time for phantom launch of 850/866." You may be right. The original Coppermine stepping looked to be centered near 790MHz. From the overclocker sites, there seemed to be quite a few chips up to about 850MHz. With a 3 sigma distribution of perhaps +/- 13%, there would be very little product above 880MHz. 10% appears to be the minimum guard band at present (although I have seen no chip below 12%) So 800MHz chips should be very scarce although the 733MHz and 750MHz chips should be much more generally available. The NEW stepping just announced will probably push the mean to just above 900MHz. This can be accomplished with an approx. 100A channel length reduction. With a similar distribution, the 800MHz and 867MHz launch becomes possible with maybe a few 900Mhz (990MHz with guard band) parts as well. These are supposed to ship near the end of the first quarter. Hence a March 1 launch followed by a 1 month phantom delay until real product arrives would mean April 1 actual product. It does seem to fit your schedule. I also think Intel is running with much higher off currents than in the past. With much flatter Vtsat roll off curves due to much better device engineering, much lower Vtsat is possible throughout the channel length distribution. This would explain why the deep sleep modes are no longer possible on .18um Coppermines. The deepest sleep mode is largely just device off current. Since Ioff is now much higher throughout the channel length distribution, these deep sleep modes are no longer possible. Lower Vtsat with accompanying higher Ioff tests the noise margins of the design but this is one of the few remaining ways to easily increase performance. THE WATSONYOUTH