TL;DR: Definitely worth it. I used Gelid Solutions GP-Extreme Thermal Pad 12W/mK, just make sure to check exact thickness requirements so you dont lose core contact. Be careful during the teardown tho.

ngl i am in the exact same boat right now and it is stressing me out. those temps are honestly scary. you might want to be really careful before tearing things apart tho... maybe check some teardown guides on youtube first? i saw a great one just by searching 3080 ti pad replacement. just be super careful about the warranty and those tiny screws, dont want you to brick anything.