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To: Elmer who wrote (106877)8/3/2000 2:14:12 PM
From: pgerassi  Respond to of 186894
 
Dear Elmer:

Take the fact that Kyle reported the same problem. That he had a software program, Prime95, that crashed Intel's own Motherboard, 1133 MHz CPU, and BIOS in less than 1 minute reliably. And when Kyle tried different motherboards, he got the same results as Tom, who did NOT have Intel's Motherboard or BIOS. When one fails, it might be an outside chance. But, two separate CPUs at two different facilities failed at 1133 and not at 850.

Now the 1133 that Intel is producing is not using the same margins as the others that the failure rate is known <= 933. Since 1000 uses smaller margins (-10C Tj and +0.05V) and is not yet at the volumes required, the model could not be checked at 1000 much less (-18C Tj and +0.15V) for 1133. The guardbands at 1133 can not be as large as the ones used at 933 and the process used is not the same (someone stated that the process used for the older stepping 1000s was not the mainstream process used at the time <= 800). Also some of the processes that can cause a permanent slowdown increase exponentially after a certain point (borne out by extreme overclocks). In addition the normal operating parameters are closer to the maximum specified limits, thus in normal (for PCs) operation, where (like overclocking) the CPU lifetime is divided by a high number (like 5 or so). A combination of all these facts can invalidate those assumptions.

However, your opinion is different than mine and we can just wait to see the actual results over the next few weeks when uninterested third parties start to use these CPUs (ie the public). The fact is, by prior experience, the DIY market will not see these for over 4 months, if ever.

Pete