4K gaming is too demanding and heavy for current gen GPU FYI, frame rate won't be good if you game on 4K resolution, even the highest end GTX980Ti can only yield ~30 FPS in triple A titles now, but well it is still depend on the game optimization, but don't put high expectation on 4K gaming just yet.

Intel Core i7 6700 - RM 1384
Gigabyte H170-HD3 - RM 488
Corsair 8GB DDR4 2133MHz Value RAM - RM 200
Gigabyte R9 390X 8GB GDDR5 WindForce - RM 1899
Kingston HyperX Fury 240GB SSD - RM 285
WD Blue 1TB HDD - RM 215
Seasonic M12II EVO 620W - RM 409

Total: RM 4980 (Techview price inclusive of GST)

Techview provides shipping service so you can buy from them online and get the items shipped to you by courier.

If you want 16GB RAM, downgrade the SSD to 120GB (RM 229) to cover up the cost of another 8GB RAM (RM 200), any DDR4 RAM with speed > 2133MHz is just a waste for this build because the mobo isn't a Z170, so just get the cheapest value RAM which has a base clock of 2133MHz, it is enough for daily task.