Here's some
benchmarks of the 1600 with rx 6700 looks like you could do 1440p @ 75hz if your monitor supports it or at least 60hz. (probably depends on the title).
Though maybe should upgrade the cpu (will probably get you nearer 1440p @ 144hz) with a Zen 3, if your monitor supports 144hz.
At the hi end folks are looking at 240hz (or 240 fps) so you can dig into all that of whether the difference is really perceptible over 60hz anyway if you upgrade your CPU you'll be able to upgrade to windows 11 too since 1st gen ryzen doesn't meet the min. requirements for it. You might want to see the
list of cpus win 11 supports.
There will be (mostly older) games where the fps is insane where newer titles are a bit heavier with lower fps and nearer to 60/144hz at various resolutions.