Probably the most important is the resolution and Hz the TV supports.Yes is for gaming. What specs are you looking for?
The high resolution requires more gpu performance. 60Hz means you are really only aiming for a steady 60fps so you don’t need as much performance as trying to run 4K 120Hz with 100+ fps. A 3080 would do a very good job, you could go as low as a 3070 but in most modern AAA games you will have to tweak settings to achieve 60fps. A 3060 is more a 1080/1440p card.3840 x 2160 and 50/60 Hz