[mystik]

Thanks much for the info and comments.

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Hm, I ordered my NUC and the RAM yesterday, but I bought the 4GB Crucial without the J at the end (so this one: CT51264BF160B). What´s the problem with the 4GB module without the J at the end?

https://communities.intel.com/message/213351 :

"The different between these parts is the density meaning
the number of black DRAM chips that make up the module. Part CT51264BF160B is a
low density version which will have 16 chips in total. Part CT51264BF160BJ
(note the J at the end) is high density meaning it will use only 8 DRAM chips
on the module.

The Intel D54250WYK will accept high density 4GB
modules only and this is why you are experiencing instability."

I bought Kingston HyperX 16GB Kit 1600MHz DDR3L PC3-12800 Non-ECC CL9 DIMM 1.35V Low Voltage XMP Desktop Memory KHX16LC9K2/16X. It does not have a J at the end, but I read in a post someone else is using it with a NUC. Hoping it will work. The last part I am waiting for.[/align]