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3 Channel CPU with just two 4G RAM can work?

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3 Channel CPU with just two 4G RAM can work?

Hi all,


I am plan buy the latest DL380p G8 Server.


It will with a Xeon E2620 CPU, and I checked Intel ARK web site, it is a 3 channel.


Since budget problems, I just give this server total 8G RAM, (4G x2)
Model is this one



So .... I am wonder, do this just plug in two 4G RAM Module on it, it will work or I need buy one more 4G ram?


Thank and hope can look forward the answer as soon as possible!!

Best Regards
Jimmy Chan
Honored Contributor

Re: 3 Channel CPU with just two 4G RAM can work?

The processor number you have I believe is in error, I believe you mean the E5-2620 processor, which is actually a quad (4) channel processor.

Your best performance, in a E5-2620 processor server, will be achieved by having four identical 1333MHz (10600) RAM modules per processor installed. (4 in a single processor system, 8 in a dual processor system)

The memory module you referenced, 647893-B21, looks to be the correct module to use. In a single processor system, if you already have 2x4GB, adding quantity 2 of 647893-B21 will give you optimal performance.


FYI, much of this is explained in the quickspecs:


And HP also makes an interactive memory configurator available that can help you determine optimal configurations:


Hope this helps, let me know if it does!

David Schwartzstein
IT Channel Sales Expert / Solutions Architect

Currently looking for my next opportunity -

If my post solves your problem, please kindly take a moment to mark my post as a solution. Thank you.

Re: 3 Channel CPU with just two 4G RAM can work?



Thank you very much of the detail inform and URL and explain.


You help me a lot.

Best Regards
Jimmy Chan