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Date:      Mon, 14 Aug 2000 10:15:29 -0700 (PDT)
From:      Linh Pham <lplist@closedsrc.org>
To:        Nathan Vidican <webmaster@wmptl.com>
Cc:        Josh Paetzel <jpaetzel@hutchtel.net>, questions@FreeBSD.ORG
Subject:   Re: Dual-Athlon vs Dual-PIII ... opinions?
Message-ID:  <Pine.BSF.4.21.0008141010590.80127-100000@q.closedsrc.org>
In-Reply-To: <39982435.18498D4F@wmptl.com>

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On Mon, 14 Aug 2000, Nathan Vidican mumbled:

> Athlons run a 200mhz FSB, NOT A 133mhz FSB - that'd be your Intel PIII's
> bus speed, and only at certain clock frequencies at that. Not to mention
> the full-speed cache that the Athlon offers. I'd bet than an AMD Athlon
> 700mhz CPU running in a similar configuration on an Asus K7M/K7V
> mainboard would out-perform your PIII at 700mhz running on an Asus 440bx
> based board.

Right now, the AMD Athlon's FSB to the chipset is 200Mhz (or 100Mhz
DDR), but the memory bus is still 100/133Mhz (depending if you are
using the original AMD 75x chipset or the VIA chipset). So you are
still somewhat running at 100/133Mhz.

Also, not all Pentium III processors run at 133Mhz. Some still run at
100Mhz (but those are fading out). The Pentium III Xeons without the
standard Coppermine 256K L2 cache (which is replaced with 512K, 1MB or
2MB of either in-package or external L2 cache) runs at 100Mhz FSB.

When the new DDR SDRAM chipsets come out for the AMD Athlon, then the
CPU FSB and the memory FSB will run at 100Mhz DDR (or 200Mhz).

The Tualatin (the next generation Pentium III at 0.13-micron) will
probably run on a 200Mhz FSB (don't know if it's 100Mhz DDR or
straight 200Mhz).

// Linh Pham
// http://closedsrc.org



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