Is i5 12600kf will be ok with 6600 xt and 64gb ram ok for gaming?

Not the best build, but how will it be?

Fine for most things 1440p. Ram is a bit excessive, likely won't notice any performance differences vs 16gb.

i agree but i think 32gb ram is kinda the standard these days

its decent, go for it

You don't necessarily need G4GB of ram BUT it helps sometimes when running multiple things at once.

I have 64GB of RAM and have found it helpful, especially when playing D2R and running 10-15 copies at the same time while still playing on Main Screen.

Thanks, this is what i am doing, i run 8 copies

If you run 8 copies get 64gb for sure! 32 is not enough.

Yeah it's known you require lots of memory to multi box higher volume

Standard gamers 16gb gets it done, 32gb not a bad choice for longevity