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1440p 60hz I wouldn't bother 1440p 144hz then yes I'd consider upgrading. I remember back when my i5-750 lasted me 4 and a bit years at 4.3ghz man that was one of the highest I've seen a i5-750 run at and boy was it fast, faster than a stock 2500k and not far off a stock 3570k back in the day paired with my 780 Ti it was a monster I'm like that with my 4790k now I seriously can't see me upgrading till at least 2019