News Group Posts

cpu speed

From: bv@wjv.comREMOVE (Bill Vermillion)
Subject: Re: Problem with CPU speed report
References: <34c09071.0210230757.49ec93b8@posting.google.com>
<20021023114346.05143@tegan.com> 
Date: Wed, 23 Oct 2002 19:27:15 GMT

In article <20021023114346.05143@tegan.com>,
Tom Parsons  <cis@tegan.com> wrote:
>Libei enscribed:
>| Openserver 5.0.6a
>| Supermicro P4DCE+ motherboard Dual Intel XEON 2.2 MHZ CPU
>| When system boot it shows CPU clock 2.18GHZ.

[buncha stuff deleted - wjv]

>Don't expect perfection.  That speed test is an approximation.  I grabbed
>these for comparison.  Everything on 5.0.6 or 5.0.5

> 200mhz Pentium     The CPU performs like a 302Mhz Intel Pentium
> 400mhz PII         The CPU performs like a 400Mhz Intel Pentium II Model 5
> 233mhz Pentium     The CPU performs like a 354Mhz Intel Pentium
> 200mhz Pentium     The CPU performs like a 189Mhz Intel Pentium
> 400mhz PII         The CPU performs like a 463Mhz Intel Pentium II
> 120mhz Pentium     The CPU performs like a 113Mhz Intel Pentium
> 333mhz Pentium Pro The CPU performs like a 334Mhz Intel Pentium II
> 600mhz PIII        The CPU performs like a 621Mhz Intel Pentium II

Some of those are more explainable than others.

For instance:
> 120mhz Pentium     The CPU performs like a 113Mhz Intel Pentium

A 100Mhz Pentium typically runs the bus at 66MHz, while the 120MHz
Pentium uses the 60MHz bus, so that whil the CPU is 20% faster the
bus is 10% slower.  Thankfully we don't have to play those games on
new machines.

100Mhz * 20% = 120MHz.[cpu speed difference]
120 - 10% = 112MHz - [bus speed compensation].

That means the ideal chips in that ere were 100, 133 and 166 as
they all used the 66MHz bus.

Sort of like the old horsepower wars from Detroit a long time ago -
bigger engines didn't neccesarily go faster :-)

Bill

-- 
Bill Vermillion - bv @ wjv . com
 

Comments?

Jump to Comments

Many of the products and books I review are things I purchased for my own use. Some were given to me specifically for the purpose of reviewing them. I resell or can earn commissions from the sale of some of these items. Links within these pages may be affiliate links that pay me for referring you to them. That's mostly insignificant amounts of money; whenever it is not I have made my relationship plain. I also may own stock in companies mentioned here. If you have any question, please do feel free to contact me.

Specific links that take you to pages that allow you to purchase the item I reviewed are very likely to pay me a commission. Many of the books I review were given to me by the publishers specifically for the purpose of writing a review. These gifts and referral fees do not affect my opinions; I often give bad reviews anyway.

We use Google third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.