How to find out my systems DDR RAM speed?

Bruce MacDonald brumac at
Fri Jan 6 09:01:06 PST 2006

BIOS screens and RAM chips are tough to see from a distance :)

The program memtest86+ shows the information you
seek.  Unfortunately, as far as I know, it must be run from a boot disk,
though since it is open source, it perhaps could be modified to run under

Also, I may be wrong about this, but I think that if your current system
requires slower DDR333 RAM, then putting in DDR400 may cause problems.
OTOH, if it can handle faster DDR400, then it could also use DDR333, but run
more slowly.  Also, I really dislike mixing RAM types on a single board, but
people tell me that on modern mobos, that is not such a big deal as it once


On 1/6/06, Danial Thom <danial_thom at> wrote:
> --- Holtor <holtor at> wrote:
> > Hello Everyone,
> >
> > I'm running FreeBSD 5.4-STABLE on a remotely
> > hosted server and I'd like to find out the DDR
> > speed
> > of the RAM chips installed so I can order the
> > proper ones for an upgrade. I know it's either
> > DDR333 or DDR400 so I assume I can just order
> > DDR400 to be safe but..
> Its usually displayed by the bios at boot time.
> Its also labeled on the ram itself if your system
> isn't hermetically sealed.
> DT

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