astroboy89

I am really confused whether I should for the Intel i5-6600 (non-K) with b150 vs i5-6600k with z170 for gaming when paired with the Gigabyte Xtreme Gaming GTX 1070. I will be primarily gaming @ 1080 for 50-60 fps atleast @ high settings for the coming 4-5 years ( I know GTX 1070 is overkill for 1080, but it will help me in futureproofing ).

I am a complete noob in overclocking and dont know the intricacies of it and havent done it. I read that lot of researching, patience and understanding is needed for successfully manual overclocking without any damage and it is a trial and error method.I really dont have the time for it and saw in other forums that auto overclocking via the mobo software provided is not really recommended. 
When price is taken into account intel i5-6600 with b150 * Rs 16000+9000= Rs 25000) whereas the i5-6600k with z170 ( Rs 17000+13000+3000=Rs 33000) for an expensive stable board and an extra after market cooler for overclocking.I think this extra 8k will be better invested in the GPU and other parts. Is overclocking really give significant performance boosts down the line in gaming for the extra price. (Rs =Indian Rupees)

Please correct me if I am wrong and am open to all suggestions. 

Will the non K 6600 reach 3.9 Ghz as advertised without overclocking?