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

From: EM1897@xxxxxxx
Date: Fri, 11 Mar 2005 00:59:57 -0500

In a message dated 3/10/2005 8:44:27 AM Eastern Standard Time, Joerg Sonnenberger <joerg@xxxxxxxxxxxxxxxxx> writes:

>On Wed, Mar 09, 2005 at 06:00:53PM -0500, EM1897@xxxxxxx wrote:
>> You usually are up on things,Matt, but you seem to be a few
>> years behind lately, so maybe you need to come up for
>> air? Not knowing about the Pentium-M was surprising, 
>> but now you seem stuck in 2001. I expect that from the
>> Europeons, but I'm surprised at you. You seem to 
>> have made a major life's commitment to making a 
>> faster O/S; do you really propose running these
>> multicore speed demons with a 1Ghz  bus? What (the
>> hell) do I need a 3+ Ghz processor for if I'm running
>> on a bus thats 8X slower? What's the point of Hyper
>> tunneling if you have such a slow conduit to the outside
>> world? Where cares how fast the processor is if you can't
>> pass any data? And PCI-X is not any "newer" than the 
>> Opteron or any of the other processors we've mentioned 
>> here, so what exactly are you talking about when you
>> say its "new"? 
>Second, check your fact. Just because a bus was proposed a few years
>ago doesn't mean that any hardware exist.
>Also, just because you have some strange requirements, it doesn't
>mean that others have the same and therefore draw the same results.

I'm sorry Joege, but if you think there is no pci-x hardware,
or you don't know the difference in cpu usage between regular PCI ethernet devices and PCI-X devices, then you really 
aren't qualified to comment on the matter. I'm sorry if that
 offends you, but you seem to not know what is going on in the real world. I'm baffled by some of the things I'm hearing here, frankly. 

The bottom line is that you can't run gigabit on a bus that
only bursts to a gigabit/sec (regular pci), so I dont see
how you can be the one the works on gigabit drivers when
you don't understand the relationship between the bus and
throughput capabilities. There is nothing "strange" about
the requirement. You triple the real capacity of the system
with a 133Mhz bus vs a 33Mhz bus. Its an absolute 
requirement for anyone who knows what he's doing. 

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