game junky :
Shipping to the UAE might be a challenge - might be easier to just go to a local brick and mortar store to get a pre-fab. Intel's Haswell & 1150 motherboard is probably the most popular platform at the moment. For just gaming, the 4670 is more than enough but if you want to be able to stream your gaming to sites like twitch or if you encode, I would go with the 4770k. The need for liquid cooling depends entirely on whether you overclock and what the ambient temp of the room you game in is - a good air cooler would be more than enough to cool either of those chips as long as you're not planning on gaming in 80 degree temps or overclocking your processor. If you were stateside, this is what I would recommend building:
http://pcpartpicker.com/p/3EUp8
i will be running high games like farcry3 and watch dogs and all the high stuff i might get
graphics card: (quantity 2) XFX Black Edition Double D RADEON R9 290 980MHz 4GB DDR5 DP HDMI 2XDVI Graphics Cards R9290AEDBD
or EVGA GeForce GTX780 SuperClocked w/EVGA ACX Cooler 3GB GDDR5 384bit, DVI-I, DVI-D, HDMI,DP, SLI Ready (03G-P4-2784-KR)
*not sure*
processor:Intel Core i7-4770K Quad-Core Desktop Processor (3.5 GHz, 8 MB Cache, Intel HD graphics, BX80646I74770K)
mother board: ASUS MAXIMUS VI HERO DDR3 2800 LGA 1150 Motherboard socket for 4th Generation Intel Core i7/ i5/ i3/ Pentium / Celeron Processors