If it'd make Riven more fun and immersive, and you can afford it, go for it!
My computer's limping along. My GTX1070 died a while back and I had to replace it but had no money so ended up with a big downgrade. Which is fine since 99% of what I play is stuff that could run on a raspberry pi.
I'm loathe to get a better GPU cos this PC is going to give up sometime and when that happens I've decided to get one of those Beelink mini-PC things that are basically just laptop hardware in a box. Usually using an AMD APU. Which would be fine for me and I'm very much done with dicking around with PC hardware.
I did just treat myself to a
Miyoo Mini Plus*, since I had a tiny bit of spare money for the first time in like 3 years. It's on its way from China.
* Cute little 'retro' handheld. Plays all games up to PS1. I'm not a retro gamer and I don't have much nostalgia for old games but I thought it'd be fun to play some of the old games I missed out on on a little handheld thing.