In article <(E-Mail Removed)>, "PFC" <(E-Mail Removed)> wrote:
> Hi,
> I have a P4PE main board and I'm using two double-sided 512Mb DDR333. The
> problem is that, if I use only one DDR on bank 1 everything works fine. If I
> install the second DDR on bank 2 the windows XP becomes very unstable. I
> tried these memory modules in other computers but with different main boards
> at it works fine. Does anyone know about any compatibility problems with
> this board? I'm already using the latest bios version.
>
> Thanks for all the help.
Get a copy of memtest86, as using Windows OS as a means of detecting
memory problems is asking for trouble. Memtest is much better at
detecting memory problems than the OS is. When the standard tests
are clean, you can enable the extended tests, which help test that
the memory bus itself if functioning properly (Vtt noise problems).
You may need to set the memory timings manually. I think Sandra has a
module (the copy I've got, the SPD module runs from a DOS prompt), and
it can read the SPD on the DIMM, and it will tell you the memory timings
the memory can accept. I think there is another utility called CPU-Z,
that dumps the current memory settings being used by the hardware, if you
want to simply back off on the current settings a bit. (Take the CPU-Z
value and slow down the timings by one and retest.) I've never used
CPU-Z, so I don't know where to download it.
So, I'd try tuning the memory before declaring there is a problem.
Sometimes changing the voltage on the memory can help a bit.
In the BIOS, there is a "DDR Reference Voltage" setting you can
play with. The values are [2.9V] [2.7V] [2.6V] [Auto]. You could
try 2.6 or 2.7, but depending on what the voltage really is on the
board, the 2.9V setting might affect the long term reliability of the
memory. Some vendors will tell you what the maximum voltage is for
their DIMMs.
Happy tweaking,
Paul
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