Re: A8R32-MVP Deluxe and OCZ OCZ2P800R22GK

GaryP wrote:
Never mind, ordered 2 GB of Corsair TwinX2048-3200C2PT to go with my 2
Corsair CMX1024-3200C2PT, hope they work well together! They show all
the same timings and speed, not sure what the difference is but the
CMX modules are substantially more expensive..

GP

If I caught the essence of your question, you were trying to mix
some new 240 pin DDR2 (1.8 volt) memory with your existing
184 pin DDR (2.5 volt) memory ?

The CMX1024-3200C2PT DDR memory sounds more like a memory that would
go with S939.

AM2 uses DDR2, S939 uses DDR.

Corsair even has a configurator, to help with selection.

http://www.corsairmicro.com/configurator/product_results.aspx?id=9653

Check the user feedback for your board here - see if anyone had
problems running 4GB, and what did they do to fix it. First off,
the memory controller is inside the processor, so the performance
depends on the processor, and not the motherboard design. If you
switch to another S939 board, the behavior should not change.
Two good DDR sticks, should run DDR400 Command Rate 1T. When you
install four sticks, that changes to either DDR400 Command Rate 2T
or DDR333 Command Rate 1T. It usually requires some user experimentation
to establish the most efficient running condition for the memory,
at the same time avoiding any detectable memory errors. In that
regard, your existing 2x1GB configuration was an ideal one.
Going to 4x1GB is what you do, when you really need >2GB every
day you are using the computer (don't add the memory just for
chuckles).

http://vip.asus.com/forum/topic.aspx?board_id=1&model=A8R32-MVP+Deluxe&SLanguage=en-us

Some voltage boosting for the DDR memory, can help performance a bit,
but don't exceed the manufacturer recommendation for max value, if
a max is provided. For example, I regularly run my DDR400 memory
(nominal 2.6V) at 2.7V without a problem (my memory is known not to
tolerate overvolting). There is a bit of memory that can do well up
to at least 3.3V (Winbond BH-5, no longer made), but the processor
also has a max voltage value on the memory interface (at least on paper).
Generally, the module maker's suggested value should be OK.

Here are some sample datasheets from Corsair. The second is a twin pack.

http://www.corsair.com/_datasheets/CMX1024-3200C2.pdf
http://www.corsair.com/_datasheets/TWINX2048-3200C2.pdf

Paul


On Wed, 28 Nov 2007 10:24:39 -0500, GaryP <gary@xxxxxxxxxxxxxxxxx> wrote:
Anyone running this combo (
http://www.ocztechnology.com/products/memory/ocz_ddr2_pc2_6400_platinum_revision_2_dual_channel
) and is there a BIOS setup/optimization guide around for it? I want
to toss 4G (4x1G) in. I do notice it runs at 2.2V and it *looks* like
I have DDR voltages of [AUTO], [2.6]...and up....

Need CAS settings that work, etc. etc.

Thanks!
GP
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