In my opinion from what I have researched, your graphics card is from 2019 (The 2070 Super) and its still a pretty good graphics card but yeah any of the 2 graphics you choose to buy will be quite a big leap in performance indeed!
Be sure to compare the specs of your own Graphics card you have now to the 2 on the market. If you are looking for a budget-friendly current graphics card, then the GeForce RTX 4070 should help with that! AMD Radeon seems to be more expensive.
But here are some resources I found that you can do your research on to help with your buying decisions:
https://www.nvidia.com/en-us/geforce/graphics-cards/40-series/rtx-4070-family/
https://www.amd.com/en/products/graphics/amd-radeon-rx-7900xtx
eBay Listings of these items:
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p4432023.m570.l1311&_nkw=geforce+rtx+4070+super&_sacat=0
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p4432023.m570.l1313&_nkw=AMD+Radeon%E2%84%A2+RX+7900+XTX&_sacat=0
I wish you the best of luck on your decision of your purchase! 🙂