I would like to go for a radeon hd 7750 card. As my monitor resolution is 1360*768 i hope i can play all games releasing in 1 or 2 yrs in high settings. I am not sure whether to go for ASUS/Gigabyte/Sapphire/XFX/HIS card. I would like to avoid 6 pin connector. I have a old PSU Gigabyte Superb 550(450 W) and my motherboard is intel DH61WW,processor i5 2310 and ram 8gb.