(1) Intel i5 6400
(2) Asus ROG Maximus VIII Hero Mainboard with org backplane
DDR4 , M.2 PCI-E, Type-C ..
https://news.xfastest.com/review/10350/asus-maximus-viii-hero-z170-skylake/
(3) Cooler master heat sink
1+ 2 + 3 HK$700
(4) Add HK500 upgrade to i7 7700
(5) Add HK$200 for 8GB , 350 for 16GB ddr4
(6) Add HK$400 95% new with box Power supper :
Corsair RM850x — 850 Watt 80 PLUS Gold Fully Modular ATX PSU 500
https://www.corsair.com/us/en/Categories/Products/Power-Supply-Units/RMx-Series/p/CP-9020200-NA