求$5500 打机 list

挽bf3/lol
想开到全高,5500做吾做到

(CPU) Intel Core i5-3450 Ivy Bridge (3.1GHz, 6M Cache, LGA 1155) HK$ 1606
(底版) ASRock B75M B75,DDR3,LGA 1155,USB3.0,SATA3 6Gb/s,M.ATX M/B HK$ 495
(RAM)  Kingston DDR-3 1333MHz 4G Ram HK$ 160
(显卡) MSI DI-R7850TC HD7850 Twin Frozr 2GD5/OC 2xMiniDP/HDMI/DVI 2G GDDR5 HK$ 1940
(火牛) ANTEC NE520C NeoEco 520W 80Plus HK$ 490
(机箱) COOLER MASTER RC-334U-KKN1 Elite 334 (全黑色) HK$ 260
(硬碟) WD BLUE 500GB AAKX SATA3 HDD HK$ 470
(DVD) LG 24X DVD Writer /SATA/黑色 HK$ 140

总数: HK$ 5561

2条4gb ram会吾会好啲?

可加多条4GB $160，行够8GB

吾该晒ching

吾够后加都得