Re: host buss on p4 xeon

From: Stefan Smietanowski (stesmi@stesmi.com)
Date: Thu Dec 05 2002 - 16:10:07 EST


Hi Byron

> I am testing some new dual 2.4/2.8ghz Xeon DP boxes. They all have the
> ServerWorks GC -LE Chipset. I was looking at the dmesg out put and it
> says that the host buss is 100mhz but I in all the docs about the mother
> board it says it should 400. Is this some other number or is there some
> patches I need to get the faster bus speeds?

Strictly speaking your docs are lying.

The Pentium4 and Xeon CPUs use a 100 or 133Mhz quad-pumped bus. Transfer
4 items of data per clock getting an effective bandwidth of 400MHz at
100MHz or 533 at 133MHz.

// Stefan

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