Nvidia 2'nd gen RT vs AMD 2'nd gen RT.
Its nether good nor bad, they are comprable, i think what i will say is the 3070 Ti is what it is and its not bad for the RX 7800 XT given the latter is what everyone thinks can't do RT
Another way I would look at it is a 3+ year old cheaper gpu vs current gen dearer gpu..... imo, not a good showing.
Although metro EE is a fantastically well optimised game, the fact it runs better than the raster and rt hybrid version says it all about when RT is at the forefront
RDNA and even RDNA 2 can do RT, this has never been a problem or up for debate really, although granted RDNA 2 is basically next to useless for anything outside of extremely well optimised RT titles or settings considerably reduced (this is where as I predicted all along, RDNA 2 wouldn't age as well if you are someone who turns RT on, same way turing wouldn't age well being first gen at RT) where as ampere top end gpus can brute force it somewhat along with having the saving grace of better upscaling, which means less of a sacrifice in IQ.
I think given how much things have now swung in RT favour in terms of more and more titles using it, more titles using UE 5+, more games coming out with no fallback to raster, it would be wise if buying "now" to look at gpus where RT is stronger, obviously 7800xt/7900xt, top end ampere and current 40xx won't become useless overnight but like ampere vs rdna 2, you will see quite the gap appearing across a wider range of games the more RT becomes used.
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