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Adding Memory and CPU to Dell T610

I have a Dell T610 server with six 4gb DDR3 RDIMM's and one CPU

I have ordered a second CPU as well as six 8Gb DDR2 RDIMM's

I was hoping to be able to re-use the six 4Gb DIMM's in some way, but after reading through

http://www.dell.com/downloads/global/products/pedge/en/server-poweredge-11g-white-paper.pdf

It seems I am unable to do so.

Is there anyone who can confirm or hopefully deny this? I would like ot be able to re-incorporate those modules somehow.

If it is possible could you please tell me the configuration I may be able to use? Otherwise I am stuck with 1 DPC per CPU across 3 channels each.

I should add that the reason I ask, is that after reading the specifics in the T610 Hardware Manual available here:

http://support.dell.com/support/edocs/systems/pet610/en/index.htm

It seems that I can mix Modules capacities within a channel.

Page 124 bullet point #4
Memory Modules of diffrerent sizes can be mixed within a memory channel (for example, 2-GB and 4-GB), but all populated channels must have identical configurations.

My T610 has three channels with 2 sockets per channel.

My ideal would be one 8-GB and one 4-GB module in the 2 slots within each of the three channels per CPU

So:

CPU - 1

Channel 1
Slot A1 - 8Gb
Slot A4 - 4Gb

Channel 1
Slot A2 - 8Gb
Slot A5 - 4Gb

Channel 1
Slot A3 - 8Gb
Slot A6 - 4Gb

CPU - 2

Channel 1
Slot A1 - 8Gb
Slot A4 - 4Gb

Channel 1
Slot A2 - 8Gb
Slot A5 - 4Gb

Channel 1
Slot A3 - 8Gb
Slot A6 - 4Gb

Will this work?

I appreciate your input.
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darrinmcl
Asked:
darrinmcl
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2 Solutions
 
darrinmclAuthor Commented:
I should add that the reason I ask, is that after reading the specifics in the T610 Hardware Manual available here:

http://support.dell.com/support/edocs/systems/pet610/en/index.htm

It seems that I can mix Modules capacities within a channel.

Page 124 bullet point #4
Memory Modules of diffrerent sizes can be mixed within a memory channel (for example, 2-GB and 4-GB), but all populated channels must have identical configurations.

My T610 has three channels with 2 sockets per channel.

My ideal would be one 8-GB and one 4-GB module in the 2 slots within each of the three channels per CPU

So:

CPU - 1

Channel 1
Slot A1 - 8Gb
Slot A2 - 4Gb

Channel 1
Slot A3 - 8Gb
Slot A4 - 4Gb

Channel 1
Slot A5 - 8Gb
Slot A6 - 4Gb

CPU - 2

Channel 1
Slot A1 - 8Gb
Slot A2 - 4Gb

Channel 1
Slot A3 - 8Gb
Slot A4 - 4Gb

Channel 1
Slot A5 - 8Gb
Slot A6 - 4Gb

Will this work?


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andyalderSaggar makers bottom knockerCommented:
You can use most of them, put an 8GB and a 4GB on each channel, two * 4GB left over.
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andyalderSaggar makers bottom knockerCommented:
Oops, posted before your second post. That'll work (except you've called them all channel 1), not sure about Dell#s slot numbers but the quad-rank 8GB ones go where the 4GB oneas are at the moment.
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darrinmclAuthor Commented:
Sorry... Shoudl be this then?

CPU - 1

Channel 1
Slot A1 - 4Gb
Slot A4 - 8Gb

Channel 2
Slot A2 - 4Gb
Slot A5 - 8Gb

Channel 3
Slot A3 - 4Gb
Slot A6 - 8Gb

CPU - 2

Channel 1
Slot A1 - 4Gb
Slot A4 - 8Gb

Channel 2
Slot A2 - 4Gb
Slot A5 - 8Gb

Channel 3
Slot A3 - 4Gb
Slot A6 - 8Gb

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charlestasseCommented:
8 in channel one and the 4's in channel 2 are supported as long as you do not exceed the device count
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andyalderSaggar makers bottom knockerCommented:
Like I said before I don't know Dell's slot numbering but if the 8GB ones go where the 4GB ones are (to put them in first bank) and the 4GB go next to them in 2nd bank it'll work.
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charlestasseCommented:
8Gig in slots A1, A2, A3
4gig in slots A4, A5, A6

User Guide
http://support.dell.com/support/edocs/systems/peT610/en/HOM/pdf/hom_en.zip

Page 124

Memory modules of different sizes can be mixed within a memory channel
(for example, 2-GB and 4-GB), but all populated channels must have
identical configurations.
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andyalderSaggar makers bottom knockerCommented:
Hmm, "all populated channels must have identical configurations" isn't a requirement from Intel although it is recommended. I did a ProLiant with 10GB on channel1, 8GB on channel 2 and 4GB on channel 3 last week because the silly people bought 2 extra 8GB sticks instead of 3.
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