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Technology Stocks : CYRIX / NSM
NSM 18.270.0%Jul 31 5:00 PM EST

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To: Craig Freeman who wrote (30315)11/19/1998 9:28:00 PM
From: Scumbria  Read Replies (2) of 33344
 
Craig,

If the hangup is memory, a PII/350 on a 100MHz bus should be a great deal faster than a PII/333 (it is not). High-end video cards do a lot for video benchmarks but very little for business applications. And when I upgraded to a faster hard drive, I barely noticed any difference. Where is the bottleneck?

The bottleneck is memory latency. A faster bus does nothing to fix this problem, because the latency is inherent to the dram. The fastest drams have a latency of 25ns on a page hit and 100ns on a page miss. Compare this to a clock period of 2ns on a 500 MHz CPU.

A dram page miss will cost 100 clocks on a 1GHz CPU. All the fancy CPU architecture in the world will do nothing to resolve this issue.

Scumbria

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