Well I think this has got way off topic ROFL I am asking about best cpu for gaming ONLY will be at 1440p and I would like to use it for at least 4 / 5 years thanks
No-one can tell you what the situation in 4-5 years will be, best is also a subjective term... this is why it's always going to be a difficult question to answer.
Given what we've seen so far from the Ryzen benches, if money no object then 9900k will currently give you the highest frame rates in the majority of games assuming your GPU is sufficiently powerful to keep ahead. If money (and indeed other factors such as power consumption, heat and so on) are a factor, then the 3700X looks to be a good contender for "best" in my completely subjective opinion.
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