Yeah it is pretty good. When I replaced my intel stock cooler with it 3 years ago, it felt like freezing the cpu :D
I already have these. Please read the description first. 650w is more than enough. I chose to go with 2133 mhz cl9 than 1600mhz cl9. Also peripherals were necessary when i bought them.
I hope so :).
Thanks for your comment. I bought the case 2 years ago to fit my old gtx560ti. But the case turned out to be quite enough for most of the things. Actually my favorite case for air cooling is Cooler Master HAF942 but you know 4790k and gtx780ti are not cheap so i decided to go with my old case to keep the cost down. Right now i am saving money for a G-sync monitor. Maybe next year i will buy a proper case.
I sometimes render gameplay videos and stuff like that. Also i wanted it to be more "future-proof" :)
Thank you for trying to translate but it is not £6900 it is 6900 Turkish Liras. It is equal to around 3200$. And only processor, motherboard, ram, graphics card and ssd is new. Other parts are 1-2 years old.