Re: Vista Ultimate 64-bit 8GB on ASUS 3A32-MVP Deluxe

The problem is timings while accessing the memory. The BIOS is simply reporting the presence of devices compatible with the mobo. The BIOS is not predicting success of an installed OS.

For mobo manufacturers and cpu makers, it is a real estate problem. That is why I call it the "fourth damn dimm" problem sometimes. The electrical distance out and back from the memory controller to the furthest dimm determines the maximum frequency that can be supported and also sustain stability. There is a point at which the memory controller is overwhelmed or cannot keep up. Slightly increasing the dram voltage (no more than 0.1v) can help in a marginal situation as can lowering the dram speed if the highest rated ram for the mobo is in use. I think you are already using 667 ram which is a very comfortable dram speed for current boards so I don't see that as an issue. But the memory controller is integrated on the Phenom so while the cpu is compatible with the board and 8GB of ram is compatible with the board, is your model Phenom AND 8GB of your ram compatible on your mobo? That is the question. It is never the individual component specs but the combination that is such a headache to work out at times.

"MrKit" <MrKit@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:EB3F39FF-288C-487E-B6FC-C433018B68C3@xxxxxxxxxxxxxxxx
On the surface I would agree with you about ASUS. They can and do make
mistakes or misrepresent things in order to sell their products sometimes, or
to keep from fulfilling their duties as spelled out in their warranty.
However, I did talk to the people at Kingston, who tested the motherboard
model at 8GB with their memory. They are the originators of the claim that
the board could run at 8GBs using this particular memory model.

It is possible, I suppose, that the memory controller on the Phenom is the
problem, but what I need is a definate test to make absolute certain that
this is the cause. If it is, I can then attack it from there, fixing the
problem or returning/replacing the cpu. However, this would be too expensive
unless there was solid, verifiable evidence that the memory controller is the
problem.

I know nothing of memory controllers on cpus. I just first heard about them
a few days ago. So, I don't know how they work or anything. However, it just
seems to me that if the BIOS accepts and reports the 8GBs, then doesn't than
mean the motherboard and cpu have also accepted it? I am willing to contact
the cpu manufacturer. I just need to learn more about the memory controller
on the cpu, and whether there is a clear test to determine whether it is the
culprit.

"Charlie Tame" wrote:

Colin Barnhorst wrote:
> Curious, that is specific to 32bit Vista. The OP's issue is an > unstable
> computer running 64bit Windows on 8GB.
>
> The integrated memory controller in the phenom quad he is using may not
> be able to handle the configuration. I have read that there are issues
> like that with some phenoms. However, the OP insists it must be Vista
> because the mobo maker couldn't have gotten it wrong.
>
> Oh well.
>
> "Curious" <spammenot@xxxxxxxxxxxxx> wrote in message
> news:OrCyC3g2IHA.4492@xxxxxxxxxxxxxxxxxxxxxxx
>> Maybe the information in the following link will help:
>>
>> http://support.microsoft.com/kb/929605/en-us
>>
>>
>


Yes, Asus have got it wrong before. My old machine says it can take up
to 2MB but install that and it reports something off the wall like 50
bytes or something and crashes. New BIOS does not fix, it is a hardware
addressing defect apparently.



.

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