ok i get it but there is a small difference in the price 11$ http://www.amazon.com/Corsair-Professional-Series-Modular-HX750/dp/B0090...

and i decided to make some changes at the list by replacing the motherboard and the cpu to get butter performence :
-Motherbord :Gigabyte GA-Z77X-UP4-TH http://www.amazon.com/Gigabyte-Intel-Thunderbolt-Motherboard-GA-Z77X-UP4...
-GPU : EVGA GeForce GTX670 FTW 2048MB GDDR5 http://www.amazon.com/EVGA-Dual-Link-DisplayPort-Graphics-02G-P4-2678-KR...
-CPU : Intel Core i7-2700K http://www.amazon.com/Intel-Core-i7-2700K-Processor-BX80623I72700K/dp/B0...
-PSU : Corsair Enthusiast Series TX 750 or HX750 (PSU not decided yet waiting for you comment about that)
-SSD : SAMSUNG 830 Series 2.5-Inch 64GB (+ 1TB HDD) http://www.amazon.com/SAMSUNG-2-5-Inch-Internal-MZ-7PC064B-WW/dp/B0077CR5RK
-Cooling : Corsair Cooling Hydro Series H60 http://www.amazon.com/Corsair-Cooling-Hydro--High-Performance-CWCH60/dp/...
-Ram:Corsair Vengeance Blue 8 GB (2X4 GB)1600mHz http://www.amazon.com/Corsair-Vengeance-PC3-12800-1600mHz-CMZ8GX3M2A1600...
-case: i don't known what kind of cases available here in qatar i will see