I'm somewhat weary of the whole Ray-Tracing thing and I'd say people get too hung up over it. It's clearly Nvidia's latest buzzword to get people hyped, and I'm not sure we should assign the amount of value that Nvidia would like you to attribute it.
There's some 4 games currently on the market, that use Ray-Tracing to make the fall of light SLIGHTLY prettier than it normally would've been. You're going to have to stand still and alt-tab out of your game to compare screenshots.
Sure, if you have a $2000+ rig that you upgrade every other week, I can understand you might be worried over what your ray-tracing might do. At that point you're more of a tech-enthousiast than a gamer. Literally everyone else should just focus on
instead of getting distracted by Nvidia latest carrot-on-a-stick.
You'll be alright and SigilFay just laid out the most important bit.
That is the goal with the marketing.
Presenting the RTX line! Presenting the RTX 2080! Presenting the RTX 2080 ti! Presenting the RTX Limited 2090!
My philosophy remains the same. Choose the best of the last-gen tech you can afford, keep expectations real, expect problems no matter what, and enjoy the game.
xx60 = budget line. Great performance for present titles. Some minor compromises will be needed for especially demanding titles. It will show its limits in about a year.
xx70 = solid standard. Expect really good performance for ~2-3 years.
xx80 = screaming performance and future-proofing. Quite expensive, but it should give excellent performance for ~3-5 years.
A "ti" version is always worth it if I can afford it. It's literally maximized parts and performance for that model of card. That's worth the extra bucks.
I think ray tracing will wind up being a lovely addition, but also a very processing-intensive one early on (until the hardware advances). Personally, as lovely as the pretty lighting will be, I'd focus more on 4K performance if I had to choose. Getting rid of anti-aliasing hogging 20%-30% of my FPS is far more important to me that ensuring every pixel is reflecting the right tint of light.
We're in a spot with graphics right now where the new techniques are likely to be very expensive, performance-wise, for rather subtle returns. The only thing I'm super-excitedly-eagerly-hyped for is 4K resolutions. Performance is going to become sooo smooth once that's standard.