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HP Z820 64 GB RAM - 1Rx4 2Rx4 - Compatible?

HP Recommended
Microsoft Windows 10 (64-bit)



Is it possible to install following RAM modules in HP Z820?

Are these compatible?

What are the differences?


Samsung M393B1K70DH0

4x 8GB Modules = 32 GB


Samsung M393B1G70QH0

4x 8GB Modules = 32 GB


Please check attached images of both RAM modules are PC3 12800R DIMMs




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HP Recommended

you can not mix dimm modules with different ranks in the same memory bank


you can however run a bank of all rank 2, and another bank using rank 1 dimms


rank in this case means how the chips on the dimm are accessed if you want detailed info google "memory rank"


on the z820 each bank is composed of 4 dimms and each cpu ( if dual cpu's are installed) has 2 memory banks for a total of 4 banks (2 banks for a single cpu)

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