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Sorry to bring this thread back -- I've just upgraded from a single CPU to dual CPU's on my 4,1->5,1.

If I'm hoping to rock dual x5690's, is the consensus that 6x16GB RDIMMS would be the best configuration? I'm trying to optimize a bit for memory latency and single threaded performance, but still want ECC.

Are UDIMMS a viable option, or are they limited by costs or the maximum memory I could configure?

Thanks.

This thread listed some known good DIMM's part number. for cMP

https://forums.macrumors.com/thread...memory-upgrade-compatibility-and-faq.2099103/
 
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