Recommended RAM for Mini 3.0 E

[skymoo]

Getting started with my new TrueNAS Mini 3.0 E and finding that I need to upgrade the RAM. Looking at what is currently installed there is a single 8Gb stick of RDIMM-ECC 2133 MHz DDR4 so I was thinking about getting another 8Gb stick of the same specifications, so something like:

NEMIX RAM 8GB DDR4-2133 PC4-17000 1Rx4 ECC Registered Memory - Newegg.com

Buy NEMIX RAM 8GB DDR4-2133 PC4-17000 1Rx4 ECC Registered Memory with fast shipping and top-rated customer service. Once you know, you Newegg!

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Or would it be better to get a new 16Gb kit so the sticks are matched, i.e. something like:

NEMIX RAM 16GB 2x8GB DDR4-2133 PC4-17000 1Rx4 ECC Registered Memory - Newegg.com

Buy NEMIX RAM 16GB 2x8GB DDR4-2133 PC4-17000 1Rx4 ECC Registered Memory with fast shipping and top-rated customer service. Once you know, you Newegg!

www.newegg.com

Or would 32Gb be a better option?