Subject: Re: O/S Support for large [512Mb] PC systems
To: Mike Smith <mike@smith.net.au>
From: Kenneth D. Merry <ken@plutotech.com>
List: port-i386
Date: 06/22/1998 00:26:42
[ Just a couple of comments on this ]
Mike Smith wrote...
> > 4) Has anyone used any of the Supermicro boards e.g. P6DBS with the builtin
> > Adaptec Dual Channel UWSCSI ? or got suggestions for other suitable
> > motherboards (preferably ones with will take up to 1Gb RAM) I should
> > point out that 'the management' would REALLY like to use a commercially
> > available box rather than me build one out of bits !
One thing to keep in mind is that the P6DBS has an Adaptec AIC-7895
on board. This means that it will only work with FreeBSD and the CAM
patches (ftp://ftp.FreeBSD.ORG/pub/FreeBSD/cam/README) or a fairly recent
Linux kernel.
[ ... ]
> - If you want more than 512MB of memory, you need to use Pentium Pro
> processors. (This may change with new PII models; I'm a few months
> out of date. Be very certain to check this carefully.)
For the 233-333MHz versions of the Pentium II, you are correct.
However, the 350 and 400MHz versions can cache up to 4GB. See:
http://developer.intel.com/design/pentiumII/datashts/24365701.pdf
Look on page 9. If you're up for waiting a bit, though, I would
probably wait for a Slot 2 processor and the 450NX chipset. You will be
able to do 4-way SMP with the 'Xeon' processors, and the cache will run at
the same speed as the processor.
Ken
--
Kenneth Merry
ken@plutotech.com