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I am about to pull the trigger on this system.

It comes with 8GB of RAM. I would like more, preferably something along the lines of 24-32GB of RAM. I've been unable to find any UDIMM in a 2x8GB configuration but, I've found plenty of RDIMMs though in that configuration.

  • Would it be possible to use RDIMM in a system that asks for UDIMM?(I'm doubtful about this)
  • Does anyone know where to purchase UDIMM in a 2x8GB config?(Do they even make it this way?)

I presume the 1U setup only allows up to 32 GB of ram.

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Why are you building? If you look at past questions you will see that a large majority seems to be in the 'buy' camp. – Zoredache Oct 13 '11 at 18:07
Oh, and we don't really do shopping recommendation here. – Zoredache Oct 13 '11 at 18:08
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Unbuffered memory (UDIMM) can't support very much RAM on the same bus because the RAM is actually running off signal power. Registered/Buffered memory (RDIMM) on the other hand can support much more because the RAM is electrically isolated from the signal bus by the registers, the RAM runs off bus power. There are also Rank considerations that play into how much RAM can be supported, and how fast that RAM can run. The combined complexity is one more reason everyone's in the "buy" camp. – Chris S♦ Oct 13 '11 at 18:15
I'm building because this is something for me and isn't mission critical. I live close to the data center. I'd rather not spend the extra money on a complete solution. – Mike Megally Oct 13 '11 at 18:19
@ChrisS thank you for that response. I kind of figured as much, but wonder why the board can support 32GB of memory then. I'm sure I can probably find some retailer that has it, but I do worry about the stability of the RAM then. I guess I may have to deal with only having 16GB :( – Mike Megally Oct 13 '11 at 18:21
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