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At 5Ghz there is not much difference with 6 core CPU's
https://www.youtube.com/watch?v=TG-qrBp7Cp8
https://www.youtube.com/watch?v=RkV-1cjcGYo
1440p 60hz then no not really as its already at 5ghz. If you were pushing 1440p high framerate with a much more powerful card then id agree. But with a 5600xt you wouldnt see much improvement.
Be better to wait for something like the ryzen 4000 series if anything before considering.