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Windows 7: Memory upgrade

12 Jun 2010   #11

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10

What did you buy for RAM?

My System SpecsSystem Spec
13 Jun 2010   #12

win7 64
Memory upgrade

Thank you for your suggestions and information.
I enabled the flexibility mode some time ago, but it didn't change the outcome.
I have attached the latest scan from crucial. I tried another company and it gave me the same information.
The mobo manual says that it should take 4gb.


Attached Files
File Type: doc Crucial scan.doc (63.5 KB, 6 views)
My System SpecsSystem Spec
13 Jun 2010   #13

Windows 7 Pro X64 SP1

Have you tried the Windows Memory Diagnostic?

At a guess, you've mixed RAM from different manufacturers.

Does the new RAM work OK if it's the only RAM in the system? (I'd expect that.)

You may be able to get it all to play nicely together if you manually set the memory voltage and timings in the BIOS setup.

Good luck.
My System SpecsSystem Spec

13 Jun 2010   #14

win7 64

I have just run Windows Memory Diagnostic. No errors were recorded.
The RAM is new from Crucial. There are no other manufactures involved.
Mixing and matching the pairs makes no difference.
The memory voltage and timings could be a possibility. Is this overclocking? Is there any risk to the CPU/MOBO if I do this?
Thank you.
My System SpecsSystem Spec
13 Jun 2010   #15
Microsoft MVP

Win 7 Ultimate x64

No it isn't overclocking. If the ram is of slightly different spec what should happen is that the faster (lower latency, etc) will down clock to the lower spec'ed ram. Usually mixing and matching isn't a problem, but it can happen that it just won't work that way.

That is one of the reasons that it is recommend to use memory from the same manufacturer with the same specs, as it reduces the chance of incompatibilities.

Grab this,

CPUID - System & hardware benchmark, monitoring, reporting

and with each set of ram installed (bit of a pain having to swap them out, but the only way since they don't want to play nice together) run it and take a screen shot of the Memory and SPD tab for both, and post them back. please.
My System SpecsSystem Spec

 Memory upgrade

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