Re: Should I upgrade to 80 MBytes on TP760ED?

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From: Vincent Poy (vince_at_mail.MCESTATE.COM)
Date: Wed Mar 10 1999 - 04:03:30 EST

On Thu, 4 Mar 1999, Yong Whang wrote:

        You need to look at the Intel site where the technical specs for
the chipset is... I don't remember the exact location but I know it's
there. SDRAM and EDO doesn't really do anything much since the cache is
more efficient since there has always been Level 2 cache. Except that the
old one was Asynchronous while the new ones are Synchronous. I think you
can always ask on a technical mailing list like FreeBSD Questions and
someone will point you to the correct URL for the site. And there
isn't a way to turn the cache controller off since the Bios setup doesn't
have that function.

Cheers,
Vince - vince_at_MCESTATE.COM - vince_at_GAIANET.NET ________ __ ____
Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ]
GaiaNet Corporation - M & C Estate / / / / | / | __] ]
Beverly Hills, California USA 90210 / / / / / |/ / | __] ]
HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____]

> Can you give me the reference for this?
> I checked the Intel site (and looked at TX chipset
> datasheets), but I can't find any statements alluding
> to this. I would think that if the cache controller is turned
> off, you'd get like 50% decrease in speed rather than 10% that
> you measured.
>
> On another front, I would think that with SDRAM, upper memory
> not being cached wouldn't be that bad. I thought that when
> EDO and SDRAM first came out, their purpose was to get rid of
> L2 cache altogether. It hasn't happened yet, but...
>
> Yong Whang
>
> > >
> > > That's actually wrong... According to Intel engineers and I have
> > >tested this as well... If the cache controller chipset can only cache 64
> > >megs, then it will not cache any ram at all if you go past the limits.
> > >This can all be found on Intel's site.
> > >
> > >
> > >Cheers,
> > >Vince - vince_at_MCESTATE.COM - vince_at_GAIANET.NET ________ __ ____
> > >Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ]
> > >GaiaNet Corporation - M & C Estate / / / / | / | __] ]
> > >Beverly Hills, California USA 90210 / / / / / |/ / | __] ]
> > >HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____]
>
>

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