So I haven't built a system in ages i7-920 and me thinks it's about that time. I'm thinking on ITX form factor. I don't build often so I end up spending a little more to try to make it as long lasting as tech allows. I'm not into overclocking or water cooling as I'm no longer interested. I just want a semi quiet stock cooled and fairly cool temp wise pc. With that said would you recommend z270 with a i7-7700 or i7-7700k? does 65w vs 91w make a big difference with heat?