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To ensure system stability and long-term reliability of your processor, the recommended memory is DDR4-2666. Although it is possible that higher memory speeds will work, that is limited to the maximum amount supported by the motherboard. Now, maximizing memory performance is possible but that is technically a form of overclocking. Unless you configure your system properly, you will not achieve higher speeds. Make sure you get as much information as you can about this if you want to get faster memory.
You can also find the memory specifications for this processor on the following link below: