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Server memory config

I have an old Intel S5520HC board with 2x Xeon E5520.

This system will be installed for Exchange 2016. I have 10x 8GB memory modules, if I install all the modules I have a total of 80GB RAM running at 800MHz, the board supports 1066MHz.
Is it better to run the RAM at 1066MHz or would it not make a difference for Exchange?
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DJMohr
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DJMohr
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1 Solution
 
ste5anSenior DeveloperCommented:
Check the RAM. When it is reported to run using 800MHz, this means this is the SPD setting (on-RAM module). Further this means running it at 1066MHz is overclocking it. Doing this in a server is normally not a good idea.
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DJMohrAuthor Commented:
The RAM is 1066MHz, but because of the configuration the system has downgraded to 800MHz.

The question is more if I should leave it with 80GB RAM running at 800MHz or maybe 64GB running at 1066MHz.

Which would Exchange benefit from more?
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ste5anSenior DeveloperCommented:
Check whether your memory is supported.

One possibility is, that the BIOS is using 800MHz as default, when it cannot read the SPD, if your memory contains one.
So check the BIOS options for memory speed settings.

Caveat: This means you should run a complete memory test, when you can change the speed to 1066MHz.

p.s. the amount of RAM should be not the cause. So use the 80GB.
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DJMohrAuthor Commented:
Thanks, will run the system with 80GB
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