People are completely ignoring here that you do get a better cpu here with the gpu for that extra 400 bucks as for is it worth or not would depend on what you consider to be a good gaming experience for your given game. How much fps, what resolution etc. ss for me I would go with the higher model if I had the money if not then 4060.
I was in the same boat (4060 7i was 1000usd and 4070 7i was 1400usd).
For only a 5-10 fps difference, it was a no brainer to go with the 4060 and just upgrade the ram.