Since you mention ‘gaming’ first, I’d say go for the X3D. Overclocking Zen3+ CPUs is hardly worth the effort anyway, you’ll hit the point of diminishing returns real fast and hit thermal limits. Undervolting might give you better results though.

This is the best comment here.

Genuine interest, being an Arch user myself: why pick EndeavourOS over Arch? What does it do extra/differently?