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Date:      18 Feb 1998 19:03:24 +0100
From:      dag-erli@ifi.uio.no (Dag-Erling Coidan Smørgrav)
To:        Fred Gilham <gilham@csl.sri.com>
Cc:        FreeBSD hackers list <FreeBSD-hackers@FreeBSD.ORG>
Subject:   Re: opinions requested on new mainboard purchase
Message-ID:  <xzp1zx03i4z.fsf@hrotti.ifi.uio.no>
In-Reply-To: Fred Gilham's message of "Tue, 17 Feb 1998 14:59:22 -0800"
References:  <199802172259.OAA11624@snapdragon.csl.sri.com>

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Fred Gilham <gilham@csl.sri.com> writes:
> With the ASUS T2P4 you have to make sure you buy a tag ram chip that
> the board doesn't come with.  This chip is necessary to allow the
> board to cache more than 64meg.

Bzzzt, wrong. This hasn't been necessary since at least mid-1996, when
COAST 3.0 became widespread. ASUSTek T2P4 motherboards requires an
extra tag chip *or* a cache module newer than mid-1996 (ASUS CMU 3.0
or newer, or any module compliant with COAST 3.0 or newer).

When I bought my T2P4 (a P/I-XP55T2P4 rev. 1.3) in December 1996, i
bought a 256 kB ASUS CMU 3.1 cache module to go with it, bringing the
amount of L2 cache to a total of 512 kB.

Of course, if you *don't* want to add cache to the motherboard, you
*will* need a tag chip. But i honestly can't see why you'd want to do
that, since an original 256 kB ASUSTek COAST module costs somewhere
around $50, and makes a significant difference in performance in >64M
systems.

But all this is really academic since, to the best of my knowledge,
ASUSTek stopped producing T2P4 boards at least half a year ago.

If you *do* find a T2P4 floating around somewhere, then by all means,
go for it. It's one of the best Pentium motherboards ever made. But
make sure it's a rev. 3.0 or newer, since older boards don't have
split voltage (i.e. don't support MMX processors) and classic Pentium
processors are getting hard to find.

I am definitely *not* going to buy a new motherboard / processor until
the Slot II Deschutes hits the market and high-end LX motherboards
become affordable and reliable.

-- 
"I have a closed mind. It helps keeping the rain out." (Michael Press on a.s.r)

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