davidarad02 :
if it costs about the same, get the x99 setup. more cores and more DDR4 channels are always a good thing.
You are right but with £40 gap between 2 platforms I can buy a lot of compression fittings for my WC loops or coolant, etc...
I will list all the things remain in my mind and hopefully someone will enlighten me XD
6700k+Z170 ROG VIII Hero
14nm, less TDP less electricity bills, 4 cores 8 threads, easy to overclock, new chipset with new technology on motherboard 100 series, still mainstream but could be upgrade later(?)
5820k+x99-A
22nm, higher TDP, 6 cores 12 threads, not easy to overclock if compare with 6700k(more core more difficulty), not really old technology but some features for gaming dont have on this mainboard, not sure about upgrade later because of socket 2011-3
My personal choice is still X99 but I'm still confused is it worth to sacrifice some features on new z170 mainboard and get the durability of x99 and 2 more cores, etc?