05-14-2018, 08:39 AM
Join Date: Dec 2004
Location: Nebraska, USA
OS: Win10 64-bit Professional
"In theory" you can mix and match all you want assuming each RAM type is compatible with that specific motherboard (be sure to check your motherboard's QVL - qualified vendors list - on the board's website).
"In reality", the newer your hardware, more likely your mixed devices will work together. This is because manufacturing techniques have vastly improved over the years to where RAM coming off the production lines matches published specifications much more precisely than in past years - even if from different vendors.
But theory and reality don't always jive. And until Man can create perfection 100% of the time, there will always be imperfections in manufacturing and in the raw materials too.
So as suggested above, it is always best to buy matched sets to ensure not only compatibility, but also optimal performance (working in dual-channel, for example).
In fact, I often recommend users toss the old RAM and buy all new in matched sets when upgrading just to ensure compatibility. Buying all new RAM at the same time means you are more likely to get RAM made in the same production run/lot for even greater chances of compatibility.
BTW, I note you did not specify the speed of the Kingston RAM. Is it 2133MHz too?
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