I'm sure that someone more knowledgeable will explain the whole thing to us
pretty soon. But for now I can tell you that the L2 cache has got nothing to do
with it. I have a board with 512K cache and it supports 512MB RAM and all of it
can be cached. The key is in the Tag RAM and the chipset. David G. explained
this a while back. Perhaps he'll enlighten us again.

HTH

Jose



Mark C. Barron wrote:

> >According to my source, there is a little known limitation with current
> >Pentium II processors that allow them to recognize or address a limit of
> >64Megs of RAM. This despite the fact that many high-end Pentium IIs are
> >advertised as being expandable in the RAM department to much higher
> >amounts. Could this be a case where the Pentium II motherboards will accept
> >higher amounts of RAM, but somehow the excess over 64Megs is not recognized
> >by the CPU?
>
> I don't buy this at all.
>
> What I do know, is that with 512K of L2 cache, only the first 64M of RAM
> will be cached.
> This has nothing to do with the CPU itself.  Motherboards with 1024K L2
> Cache have been
> coming on the market for at least 6 months any they will definately be the
> standard soon,
> since a lot of people are putting more than 64M in their system.
>
> So, in summary, it's the L2 cache size that limits the amount of RAM that
> can be cached.
> Too little cache size, and your system will take a definate perfomance hit.
>
> Mark C. Barron