Ps3 had a 400 gigaflop gpu.Legend preparing us for a low powered GPU. I can see it already.
Ps4 has a 1.84 teraflop gpu.
Anything up in the 7+ range is great since gpus improve in other ways too. A great cpu is more important to the types of games I want.
Personally I know PS5 will be a big step up from PS4 regardless.
But I'm still hopeful that it'll be a bit more competitive.