Will These Parts Be Compatible For Building a PC?

[ILackCreativity]

I am planning to build a gaming PC, but I just wanted to see if all of the parts I selected would be compatible with each other. The parts are as follows:

-Intel i5-3570K CPU
-Windows 7 Home Premium OS
-Galaxy GTX 660ti GPU
-KENTEK 850W PSU (http://www.amazon.com/Supply-EPS12V-SLI-ready-PCI-Express-KENTEK/dp/B00596CP9E/ref=sr_1_3?ie=UTF8&qid=1353716428&sr=8-3&keywords=850W+PSu)
-Patriot 8GB DDR3 RAM
-Rosewill Blackbone Black Steel / Plastic ATX Mid Tower Computer Case (http://www.newegg.com/Product/Product.aspx?Item=N82E16811147023)
-Seagate 2TB HDD
-300Mbps Lan 802.11 n/g/b Wireless Wifi Network PCI Card (http://www.amazon.com/300Mbps-802-11-Wireless-Wifi-Network/dp/B003OZG5NE/ref=sr_1_1?ie=UTF8&qid=1353699273&sr=8-1&keywords=wi-fi+card)
-Generic CD/DVD Rewritable
-EVGA P67 Motherboard

Just wondering how well they will work for gaming. Also, would a wireless 802.11 USB adapter hinder my ability to play online FPS games? Thanks!

 

[butremor]

Get a quality PSU from Antec, Seasonic, XFX, Corsair or PC Power and Cooling, Silverstone. 500-550w no more. At least 80 plus bronze.
Make sure ram is 1.5V.
Drop that mobo, and go for H77 mobo.