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Technology Stocks : Rambus (RMBS) - Eagle or Penguin
RMBS 117.84-5.3%11:39 AM EST
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To: gnuman who wrote (42833)5/22/2000 10:04:00 PM
From: Scumbria  Read Replies (2) of 93625
 
gene,

Jim, re:<I believe the page hit ratio of RDRAM has been shown to be 90+%...>
With how many chips active? <g>
No need to answer.

I'll take a stab at it. Assuming a random cache miss pattern coming off a 256K L2, you would need to have about 1MB of open pages to get a cache hit rate of 90%. This would require about 1000 open 1024 byte banks.

That is a lot of DRAM! Perhaps Jim got his number from video refresh statistics, which are all sequential. ;^)))

Scumbria
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