[SOLVED] Upgrade CPU, GPU, or Monitor

Jul 14, 2018
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Parts:

i5 7600k @4.8
GTX 1060
AOC 144hz Monitor

Which should I upgrade, btw I have 16gb of ram just to clarify

Also my main games are CSGO, COD Blackout which is optomized badly, and Overwatch.
I stay at above 250 fps all the time in csgo and above 200 fps usually in overwatch.

Should I get a 240hz monitor, i7 8700k, or gtx 1070/1070ti depending on price at the time?

i'm thinking monitor but I know the cpu will gice me more fps in csgo and support my future but im not sure. also gpu idk

anyways thanks