what should i overclock? please help.

[Thomasjones]

I am getting a i5 6600k with a gtx asus ROG 1070. Should i bother with overclocking my cpu as the gpu will bottleneck anyway. If no, should i just get the i5 7600 non k and overclock the gpu? thank you for any feedback.(my motherboard is a z170 at the moment)

 

[CountMike]

For best results, OC everything in sight. Each element brings own benefits (and troubles).