PowerEdge R610 Memory Upgrade

I am looking to upgrade the memory of a PowerEdge R610, and the memory configuration is a little bit confusing to me. Currently I have this

 

[A1][A4][A2][A5][A3][A6]                           [B6][B3][B5][B2][B4][B1]

 16    4      4    4     4  Free                              Free 4     4    4    4    16

 

Can I just stick a 16GB in both A6, and B6 and call it done? Total of 98GB? That would not work right? Because A1, A2, And A3 all need to match? As well as B1, B2, and B3? So I would have to go

 

[A1][A4][A2][A5][A3][A6]                           [B6][B3][B5][B2][B4][B1]

 16    4   16    4   16   4                                4   16    4   16    4    16

 

Is that correct? My original configuration doesn't look to  be correct either, but it works.
inTheKnowSeaAsked:
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andyalderConnect With a Mentor Commented:
16    4   16    4   4   4                                4   4    4   16    4    16

Will work fine.

16    4   16    4   16   4                                4   16    4   16    4    16

would be more efficient but would cost more.

You won't have to change the memory mode as you already have the right mode for unbalanced channels.
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Adelaido JimenezDevOpsCommented:
There are different configuration you can make depending on what you want to accomplish. Memory Optimization, Advanced ECC or Mirrored, or UDIMM. I would reference the dell manual for your R610 server and determine what you want to accomplish. Here is the manual we used for our servers. More specifically page 28 where it talks about memory http://www.dell.com/downloads/global/products/pedge/en/server-poweredge-r610-tech-guidebook.pdf
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inTheKnowSeaAuthor Commented:
We just ended up going with the more expensive config and it was correct.
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