I understood that MB is not important like CPU and video card.
SO, It is better to buy cheap MB and Save money for video card!
What I am going to do:
MB: ASUS P8H61
CPU: I5-2500 (Intel Sandy Bridge Core i5 CPU 3.3 GHZ 6 MB Cache LGA 1155)
Video Card: HIS HD 5770 IceQ 5
PS: 700W (E80-700, ECO-Friendly, Silence 12 cm Fan)