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

Hello Geoff,

* 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.

Greetings from Germany,

Alexander von Obert, Urbanstr. 2, 90480 Nuernberg, Germany
Free-lance Technical Writer (electronics, software)
Voice +49-911-403903, Fax +49-911-403904, BBS +49-911-403905 (FIDO 2:2490/1719)

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