Problem with a amd 64 Opteron and FreeBSD 5.2.1

Willem Jan Withagen wjw at
Fri May 7 16:19:56 PDT 2004

I think it was on the Kinston website where it specifies which
board/memory combinations are "supported" by Kingston.
(Sorry, but I do not have the link any longer)

Which is why I have 4*512Mb instead of 4*1Gb, 'cause the 1GB's
that were supported are a LOT more expensive.

And yes on my 242 board I'm running PC2700 since that is what
was specified.


----- Original Message ----- 
From: "James R. Van Artsalen" <james at>
To: <jamesh at>
Cc: <freebsd-amd64 at>
Sent: Friday, May 07, 2004 10:47 AM
Subject: Re: Problem with a amd 64 Opteron and FreeBSD 5.2.1

> James Hale wrote:
> >I've a problem with this amd64 OS and a Tyan Motherboard. This system locks
> >up after about 5-7 hour during large data transfers. Any Suggestions?
> >
> >CPU AMD Opteron Model 244 (1.8GHz)
> >Memory Four KINGSTON 1GB DIMM registered DDR PC3200
> >
> >
> Is the Opteron 244 rated for that PC3200 DRAM?  I thought PC2700 was the
> max except for the 248 and 246.
> If the BIOS fails to properly reduce RAM timings based on the CPU
> stepping then Bad Things might happen.
> If you have any PC2700 DRAM you might try it.  See what this line says
> in /var/run/dmesg.boot to find out the stepping (which is encoded in the
> ID - see
> for information as to what this means).
> CPU: AMD Opteron(tm) Processor 244 (1793.45-MHz K8-class CPU)
>   Origin = "AuthenticAMD"  Id = 0xf51  Stepping = 1
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