CPU - RAM Compatability/Overhead

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15 Nov 2019
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Hi, I have some knowledge, a dangerous thing and have built a few average PC'. I'm now building a gaming based PC to use purely for video editing. What I need to know please is can I have or benefit from overhead.
What I mean is if my RAM is DDR4 2400mhz must I have a CPU that handles 2400mhz or vice versa giving me overhead (extra capacity although unused)? Or put another way does the RAM run slower i.e. 2200 to comply with a 2200 CPU? (overhead!).
Any offerings greatly appreciated, thanks.
 
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