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Politics : Formerly About Advanced Micro Devices

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To: Scumbria who wrote (46755)1/20/1999 4:48:00 PM
From: Paul Engel  Read Replies (3) of 1572470
 
Scumby - Re: "Are we forgetting the 128K L1 on K7? "

No, WE ARE NOT FORGETTING IT.

Remember - this is a SPLIT cache - 64K Data and 64K Instruction.

For most applications, this will require going OFF CHIP to the L2 cache quite frequently - for EITHER DATA OR INSTRUCTIONS OR BOTH.

The performance penalty for going off chip to a 166 or 200 MHz L2 cache - including all the latencies - will be detrimental to the K7's performance.

The K6-3, on the other hand, will have 262 K of COMBINED L1 and L2 cache - all of it ON CHIP running at full CPU speed.

Paul

Paul
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