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To: pgerassi who wrote (106797)8/2/2000 8:16:07 PM
From: Elmer  Read Replies (3) | Respond to of 186894
 
Re: "Tom did not get a engineering sample. He posted on his website a picture of the CPU markings which indicate that it is a production part. Kyle's was too. If the actual mechanism that would change a 1133 part to a slower part does not get accelerated during the Q/C tests for lifetime, the model Intel uses to determine failure rate may not be any good for this purpose"

The model Intel uses is based on data collected from higher volumes of processors than all the rest of the world's output combined. As I said, the probability of a production processor suffering an early life failure is probably below 0.05%. The effects of electromigration (which could slow a device) are based on the process and design rules, not the specific stepping so you can't use a new stepping as an reason to point a finger at Intel's EM guardbanding. It doesn't wash. You are grasping for explanations that are possible yet highly improbable while ignoring the much more likely possibilities. FAR FAR more likely is the possibility those guys screwed something up. It seems to me that when an problem arises you address it based on the highest probable cause first, not the least likely first as you and Scumbria are doing. The most likely cause, by orders of magnitude, is those guys screwed up. To compound matters, Tom refuses to return the part. It seems simple to me. He probably screwed something up, damaged the part and now he's too embarrassed to let Intel see his blunder.

EP