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PC Processing Power (was Home Alone) [Ref:C746684]
Subject:PC Processing Power (was Home Alone) [Ref:C746684] From:Alexander Von_obert <avobert -at- TWH -dot- MSN -dot- SUB -dot- ORG> Date:Sat, 5 Apr 1997 21:43:00 +0100
* Antwort auf eine Nachricht von Geoff -dot- King -at- NA -dot- NWMARKETS -dot- COM an All am 04.04.97
GG> Es tut mir leid, aber ich bin langsam. Why 100 or 133 MHz but
GG> not 120 or 150MHz?
the internal and external clock rates of Pentium CPUs have a fixed ratio in .5
steps. A 100 MHz (really 99 MHz or externally 66.3 MHz) CPU uses 1.5 times
external clock, i.e. it works with 66 MHz externally. A 120 MHz CPU uses 60
MHz externally and therefore is slower at I/O-intensive activities than a 100
MHz CPU. This difference typically eats about the internal speed-up.
Or more up-to-date: A 150 MHz CPU is more expensive than a 133 MHz CPU, but
hardly faster in real-world applications.