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Politics : Formerly About Advanced Micro Devices
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To: Maxwell who wrote (36687)9/3/1998 12:16:00 AM
From: Paul Engel  Read Replies (3) of 1571138
 
Maxwell - Re: " Intel better release their 500MHz by February or else AMD will be at par with Intel and drive Intel out of business by selling the 450MHz for $200. "

You are neglecting a VERY IMPORTANT TECHNICAL DETAIL !

Without the K6-3, AMD's K6 and K6-2 will not get commensurate system speed improvements as their internal CPU clock speed increases - BECAUSE THE EXTERNAL L2 CACHE IS DEADLOCKED at a FIXED 100 MHz !

The faster the K6-2 runs, it is still throttled by the fixed speed of the external L2 cache !

On the other hand, as Intel's Pentium II clock speed increases, it's internal L2 cache speed tracks at 1/2 the CPU speed. At 450 MHz, the Pentium II has a 225 MHz L2 caches speed, 2.25X the speed of the K6-2.

Yes, Maxwell - that is THE SLOT 1 ADVANTAGE (there are others !).

And, since Intel's Mendocino Celeron is out in FULL PRODUCTION, it's internal L2 cache tracks at FULL CPU SPEED - 300 MHz or 333 MHz for the L2 cache - same as the CPU clock speed.

As noted by all the Overclocking tests on the Celeron A's, provided by Tom Uberclockermeister and Anand Shimpi, the 450 MHz Mendocino - with only 128 K of L2 cache - keep pace with the Pentium II at 450 MHz (running with 1/2 speed L2 cache).

Too bad AMD is delaying the Sharptooth (K6-3) introduction until early 1999 - the K6-2 will continue to suffer and not benefit much from any clock speed improvements.

Paul
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