Complex RAM Kit Size for Max Potential

The Final Slice

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Sep 15, 2016
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Hello,
I have a multi-part question. I am planning on a future build that involves 16GB of DDR4 2133MHz memory and I have 4 slots on my motherboard. Should I buy 4 sticks of 4 GBs, 2 sticks of 8 GBs, leaving room for upgrading, or should I buy 1 stick of 16GB, leaving even more room for upgrade? (Up to 64GBs) I heard that you should buy all your RAM as one kit, or there may be a problem in compatibility, at least for overclocking speeds not going high enough. Finally for a far-future build, does this hold true to buy two sets of 64GB RAM, or should I buy a lesser speed RAM in a singular 8 stick kit, or buy a higher speed RAM from a lesser-known maker?

Thank You in Advance,
The Final Slice
 
Solution
RAM speed beyond 2133MT/s does not affect system performance unless you are looking at benchmark results that strongly emphasizes the occasional cases where it may (sort of) matter, ex.: 0.1% frame time variance.

You get the most performance and reliability from having one DIMM per channel. If you want 16GB on a dual-channel CPU, then the ideal configuration is 2x8GB. If you go 1x16GB, you lose half your RAM bandwidth since you are using only one memory channel and that may cause a 5-10% performance penalty.

InvalidError

Titan
Moderator
RAM speed beyond 2133MT/s does not affect system performance unless you are looking at benchmark results that strongly emphasizes the occasional cases where it may (sort of) matter, ex.: 0.1% frame time variance.

You get the most performance and reliability from having one DIMM per channel. If you want 16GB on a dual-channel CPU, then the ideal configuration is 2x8GB. If you go 1x16GB, you lose half your RAM bandwidth since you are using only one memory channel and that may cause a 5-10% performance penalty.
 
Solution

The Final Slice

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Sep 15, 2016
61
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4,640
Thank you very much!
So I may add another kit (The exact same kit) later just fine, without any problems arising? Therefor, I should buy a 2x8, and if I ever plan to upgrade, I can just buy another 2x8 for a total of 32GBs. (That should definitely be more than enough)

As for the 128GBs of RAM in the other build, it would be absolutely fine to buy them in 2 separate kits? Or will this create a problem as I plan to squeeze all the power I can out of the RAM?