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Subject: Re: A challenge! (CPU vs CPU)

Author: Aaron Gordon

Date: 09:16:30 05/07/02

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Sisoft sandra is fairly accurate when it comes to memory bandwidth. It's
basically a souped up STREAM benchmark. Also, I notice a very large difference
between 2.0gb/s and 2.4gb/s. This is 20%. In many applications that are memory
intensive this gives a MUCH needed boost.

Also, about running 166/200fsb synchronous. Like I said.. the 8k3a+ and other
similar boards have 1/5, 1/6 PCI multipliers and similar AGP multipliers to keep
everything within spec while keeping the bus and ram at 166 or 200MHz(333 &
400DDR). Thats why I said you can just grab the board & slap in the appropriate
memory and you're good to go. If you are at 133fsb(DDR) then ~2.0gb/s is about
all you're going to get, the theoretical max would be 2.1gb/s.

About the Quake3 benchmark, yes, optimization can overcome that gap quite
easily. Get Quake3 and run the tests (even at 133fsb w/ the tweaks you have
now). I guarantee with a similar video card you will get (easily) %20 more fps
than the AthlonXP on the page of a similar clock speed. No if's and's or but's
about it. Use my DLL's and get ANOTHER 20% :)

Most of the speed increases come from increasing memory bandwidth. With the
right board & memory you can get some ridiculous scores without having to modify
anything on the board (just a few settings in the bios, nothing more). Dual
channel DDR (2x faster than current DDR) is right around the corner.. hopefully
VIA puts out a decent chipset (like the KT266a & KT333) so we can take advantage
of such insanity. :)




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