All the P4 family of processors uses a techniwue called quad pumping or
something along those lines. So you actually have a 100 Mhz bus, but it can
take action at 4 different points during the clock cycle hence Marketeering
gives us 400Mhz bus. It is the same with AMD using the DDR bus/memory. They
don't actually have a 266/333Mhz, bus it is really a 133/166 bus that is
double pumped. Hope this helps.
--Brian Jackson
Byron Albert writes:
> Hello,
>
> 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?
>
> Thanks
> Byron
>
> ..... CPU clock speed is 2394.9664 MHz.
> ..... host bus clock speed is 99.7902 MHz.
<snip>
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This archive was generated by hypermail 2b29 : Sat Dec 07 2002 - 22:00:24 EST