Differences between AMD and Intel CPUs [was: Re: Dragonfly andHyperthreading....]

[Joerg Sonnenberger]

On Fri, Mar 11, 2005 at 08:37:17AM -0800, Boris Spirialitious wrote:
> Yes, I agree here. We have FreeBSD machine that 
> we get device timeouts and it running at very 
> high usage using 2 intel nics on motherboard. 
> We find out these are only running 33mhz and 
> we put 2 port intel pcix card in machine. Now it 
> run 30% all day. Everything else the same. pcix is
> very good and important.

I think that's a more the fault of Intel's memory architecture
and not so much of PCI-X. Keep in mind that Intel doesn't use
a point-to-point bus like AMD / DEC, so the CPU has to fight
with the host-to-PCI bridge for the memory access. This is
something which doesn't affect the CPU on AMD systems at all.

Joerg