Will it all fit? (First build, Antec 900)

that case is massive. you don't have to worry about things not fitting. my only suggestion is to buy a good 650 watt power supply. although u will probably be fine just by getting a 600 watt supply, you will be cutting it close once you add that inevitable extra hdd and dvd burner. you also will have to factor in the fact that the its output would decrease over time so buying a supply with a higher rating will prolong its life expectancy. obviously dont go for a cheap power supply. get a power supply from companies like: antec, thermaltake, pc power and cooling, ocz, silverstone, enermax, xclio, corsair, hiper, seasonic or tagan. these are known companies that make quality power supplies. heres some stickies for ur thought.

http://forumz.tomshardware.com/har [...] 65#1491365

http://forumz.tomshardware.com/har [...] 98276.html

http://forumz.tomshardware.com/har [...] 68951.html

http://www.jonnyguru.com/forums/showthread.php?t=103

http://www.extreme.outervision.com/psucalculator.jsp

the last one is a psu calculator that can give you a rough image of what kind you need.

well a psu will only draw as much power as you need from ur outlet. it wont always be drawing the full 650 watts or whatever. so you can step it up to 700 watts.with the pc power and cooling, it doesnt have dual 12v rails which ur video card requires. the seasonic s12 650w is great as it delivers 18 amps across all the 12v rails. however if u are worried about aesthetics as ur case has a side panel window the corsair would also be a better choice because of the modular cables. it'll leave a smaller mess of wires and would have better airflow than the seasonic. either is a fine choice. imo im a neat freak so i would go with the modular cabling in the corsair.