Is it safe to mix different RAM speeds and sizes?

December 7, 2025 2 answers
Asked by GamerDude82
I recently got some Kingston Fury DDR5 memory, consisting of two 16GB sticks running at 6000MTs. With RAM prices going up, I found two cheaper 8GB sticks from the same brand but at a lower speed of 5600MTs. I decided to upgrade my system to a total of 48GB of RAM with these four sticks. Now, I'm concerned about whether mixing these different RAM configurations might hurt my performance or run into compatibility issues. Can anyone share advice on whether it's okay to use all four sticks together?

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TechSavvy99
If you mix those sticks, there's a good chance everything will downclock to 5600MTs, which is slower than what you currently have at 6000MTs. In some cases, it might even go down to around 4800MTs if the compatibility doesnโ€™t work out wellโ€”definitely something to think about before making the swap!
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MemoryManiac54
Are you actually using more than 32GB of RAM? If not, it might not be worth the hassle to mix them. Just curious if you really need all that memory for your tasks!

GamerDude82: Yeah, I'm going for 48GB with two 16GB and two 8GB sticks!

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