I got a i5 4670k proccesor and two (sli) gtx 770 gigabyte (overclocked) in my newly built pc and im wondering how much i should overclock the cpu so that it doesnt bottleneck my gpu:s. I can go up to 4.5 ghz without reaching unsafe temperatures but i dont wanna overclock more than needed. Any help would be appreciated
Minecraft is more CPU dependent than GPU dependent (so yes, you would see a benefit from overclocking). This isn't a common trend in modern games for the most part. An extra GTX 770 probably won't help too much though.
If you have a decent CPU cooler, and you've shown that your motherboard is decent, then there's no reason not to overclock as long as you do it safely.