First true build, by myself

[InVis 101]

Hello,i have a hec 63rabb atx mid-tower case my motherboard is a gigabyte ga-h67m-d2-b3 lga 1155 intell h67 saqta 6gb;s micro atx,processor is a intell i5-2400 sandy bridge 3.1{3.4ghz turbo boost}lga 1155 95w quad-core, memory is g.skill ns 4gb{2x2gb}240 pin ddr3 1333{pc3 10666}mode. f3 an seqate 1tb 7200 rpm sata 6.0gb/3.5 hard drive.power suply is hec hp485d atxx12v.I"m installing 2 slipstream fans 120mm.a blu-ray burner and most of all!! a gigabyte gv-n285-1gh-b geforce gtx285 1gb 512-bit gddr3 pci express 2.0x16 hdcp ready sli support vid card .i have not installed the vid card yet. now do i need a bigger power supply an ram,or what sugestions. i"m just a modest gamer

 

[Why_Me]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013
XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371047
Antec High Current Gamer Series HCG-520 520W ATX12V v2.3 / EPS12V v2.91 80 PLUS BRONZE Certified Active PFC Power Supply

http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094
SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply