OT: Strange memory reading (hardware)

Robert Bonomi bonomi at mail.r-bonomi.com
Thu Jun 16 23:36:33 UTC 2011


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> Date: Thu, 16 Jun 2011 14:10:30 -0700
> From: Robert <traveling08 at cox.net>
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> Subject: OT: Strange memory reading (hardware)
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> Greetings 
>
> I have a strange problem with memory on one of my computers. I have
> recently converted this computer to a NAS server. It is an Asus
> A8N-VM MB running freenas amd64. I have 4 one Gig memory sticks
> installed and as well as I can remember, it had always seen the 4 Gig
> of RAM. Most recently I had 9 current installed.
>
> The problem is not with freenas as it is absolutely hardware. 
>
> I have tested with all of the sticks installed and with one at a time.
> When all of the sticks are installed, BIOS show a total of 2752 MB of
> RAM. If any of the sticks are installed alone in any of the four slots,
> BIOS then shows 960 MB instead of the 1024 one would expect.
>
> Quickly subtracting 960 from 1024 gets 64 MB missing. Hmmm, perhaps an
> address lead or data lead on the MB is open. This I can understand, but
> using any finagling factors I can think of, I can't get close to the
> missing total of 1344 MB (4096-2752).
>
> The freenas system runs quite well with the available memory but I was
> wondering if anyone could help me understand this problem.
>
> Thank you for reading this and i hope you are having a great day.
>
> Robert
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