4690k vs The New Stuff

[Squink]

I'm currently running a 4690k at stock with 16gb RAM and a 980ti. I would like to update the system by slotting in the fastest graphics card I can buy and using it at 2k resolution.

I know the tempting response is "bottleneck", but I have, in the past, read articles showing old CPUs performing pretty well with newer GPUs, especially when you get to the state where the GPU is the limiting factor (i.e. new games, higher resolutions).

If I upped the CPU clocks to 4.2Ghz, would I be vastly limited in comparison to something like a 2600X? The system is otherwise perfectly fine and I don't want to stick in a whole new CPU/RAM/Mobo for the sake of an extra 10fps when the GPU is already outputting 120fps.

EDIT - to put it clearly - would a new CPU/RAM/Mobo + nVidia 2080 GPU perform better in the long term (games only) than an overclocked 4690K + 2080ti ?

 

[Squink]

Thanks for the responses. For clarity, by 2k resolution I mean 1440p, not 1080p. I have a 4K monitor already and want to downsize the resolution and go to a 144hz. I know a few high refresh 4K monitors are appearing, but they cost a lot of money even if they are a better match for a 2080ti than 1440p.

I might hang on to what I’ve got for now if a new GPU would be such a mismatch. I don’t upgrade frequently and could wait for the new round of CPUs. I originally only wanted a new 144hz monitor and now I find I want everything!