The 80 is not that much faster than the 70, its literally 1 or 2 higher in game settings or the same reduced settings in FC6 but higher fps.
Considering it took 433 days to get a £649 3080, there were no drops for about 3 months before I got it, dibs n drabs of drops before that, others still can't get a sniff of them, I did get a launch price aib 3070 to tide me over which was the right call...
Meanwhile, despite Nv adding another 0 to the transaction to get into the 12Gb comfort zone(which tells its own story), mid range 80 owners are 100% adamant their budget gpus are bulletproof-hint thats why there's 3 and nearly a 4th better gpu than the 10gb 80.
The 70/80 are damn fine cards at msrp, still doesn't detract the fact they can run out of vram.
I think the 3080 is 20-25% faster than the 3070. That's a decent jump.
As I've said many times already, I can put together a clone of the original Pong that claims you don't have enough VRAM even with a 3090. This is essentially what AMD's sponsorship with Ubisoft did. What puzzles me is why so many people aren't directing frustration at AMD when in the past I don't remember people being so happy with Nvidia for their over use of tessellation. Perhaps the poor quality of clickbait Youtubers are to blame, or perhaps it's just down to people not using their brain, probably a mix of both.
12GB 3080? Nvidia are just pushing a new product to keep sales up as many would have held off for Lovelace. I imagine yeilds have improved meaning they don't need to fuse off so much of the GPU. From my own experience with a 10GB 3080 and games with maxed out settings I have to say 10GB is plenty. If I had a 3070 I would limit my resolution and/or settings, while enjoying the money I saved!