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To: Ron Mayer who wrote (66238)	10/12/1998 10:55:00 AM
From: Elmer	Respond to of 186894

Re: "Anyone else seen it? Is my guess good?" Very good. EP

To: Ron Mayer who wrote (66238)	10/12/1998 11:18:00 AM
From: Tony Viola	Read Replies (2) \| Respond to of 186894

Ron, Re: "I was wondering if this is one of the wafers being discussed here; where black dots mean that chip failed. " Used to be that the bad ones got a red dot and the good ones no dot (obviously, why hit the good ones with any impact thing). As far as the crack, I guess Intel obviously is still frugal enough to not donate a good one, rather, a cracked one. No brainer there, although who dropped it, affecting earnings and my stock price! Tony

To: Ron Mayer who wrote (66238)	10/12/1998 12:05:00 PM
From: Paul Engel	Respond to of 186894

Ron - Re: Intel Wafer at Fry's I saw this about 6 months ago and did the following analysis at that time. The yield significance should not be lost ! {===========================} At Fry's in Sunnyvale, they had a display with an Intel Pentium Pro package - with the lid removed, a Pentium Pro with the package Lid on (Copyright 94,95), and an 8 inch Pentium Pro wafer. The packaged die was clearly much larger than the die on the wafer - most likely a 0.6 micron behemoth. I counted the TOTAL NUMBER of complete DIE SITES on the Pentium Pro Wafer - and got 128. Assuming 196 sq. mmm, that computes to a 160 possible sites, making 128/160 = 80% - about right for the 0.35 micron Pentium Pro! More interesting - the Pentium Pro Wafer was SORTED WITH INKED DIE! I counted 32 inked die that were on FULL DIE SITES - there were ink spots on partial die so I ignored them. 128 = Full Die Sites Available 32 = Defective Die (Inked) (128-32)/128 = 75% YIELD! Wafer # 8UKXA065SJD2 {================================} Paul