Titan XP is a better card but you have to also consider the cost for performance and for how much more it cost and how little more performance you get, it’s not worth it, you should just get a nice 1080ti (there are shitty and good ones, so make sure to get a good one)
Also video render is something that also hard on your temporary memory aka your ram, so you’d want to put that extra money not buying a Titan XP into getting at least 32GB of RAM depending on what type of video rendering you’re doing. You’ll especially want 32GB if you want to do video rendering and gaming at the same time like I do... also an SSD or M.2 super important.