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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Dan3 who wrote (92977)	2/15/2000 1:37:00 AM
From: Scumbria	Read Replies (2) \| Respond to of 1574513

Dan, either the 16-way maintains most of the useful addresses that would have been picked up in the victim cache, in which case it can substitute for a victim cache, or it doesn't, in which case a victim cache behind a 16-way would be nearly as useful as one behind a 2-way. It is true that the 16-way behind the 2-way would contain a lot of useful castouts from the L1. However, the cost in real estate is extremely expensive. Most of the L2 is wasted as L1 duplicates. If that same area was used for a victim cache, it would be far more efficient, and produce many fewer accesses to DRAM (which is the whole point of the L2 cache!) Scumbria