- There's no 8GB 4070/Ti. They're all 12GB except 4070 Ti Super which is 16GB
- 12GB won't cut it ifor 1440p or above depending on the game. The cards may be powerful but unless you're looking for high settings @ 1080p, VRAM will be the limiting factor, just like 8GB was for the 3000 series
Unless you absolutely need the Nvidia only features (CUDA, RT, DLSS, etc), and can upgrade in a year or two, AMD offers more performance/₹ and VRAM /₹. The 7900 GRE has 16GB VRAM and has a bit less performance, but at 55-60k
Check out
this video by HUB for VRAM usage of various games and what happens when your VRAM is full