Building/Buying a gaming PC

The Half CM 932 is quite big, when I was building my PC I considered the same thing but When I saw it in person I changed my mind and got the mid tower case.
CASE:http://www.newegg.ca/Product/Product.asp...-_-Product
CPU:http://www.newegg.ca/Product/ProductList...20Desktops
Pick from the list, better to get black edition, both are good depends if you want the fastest or a the bit slower..
Memory: http://www.newegg.ca/Product/Product.asp...6820226103 go with this brand, Crucial has been unreliable for quite some time. There 500 dollar Memory kits have failed numerous times compared to Corsair Memory kits
Motherboard: http://www.newegg.ca/Product/Product.asp...6813128443
Chipset question: The 8xx series chipest has faster sata,faster USB, option to do SLi/CrossFire
The other thing I must mention is this, AMD Motherboards only support Crossfire meaning that Ati Cards will work together on them. Only the premium boards have support for SLi
So go with something = to a 460 gtx which is 5830
GPU:http://www.newegg.ca/Product/ProductList...0HD%205830
Power supply: A 500-700 watt will work fine for your needs http://www.newegg.ca/Product/ProductList...me=Corsair
Pick from the corsair brands

Also if you have a near by microcenter you can bargain offers with them..
Say you find something cheaper at newegg, you can show it to them to lower down the price of the item
Any other questions?
Like others have said: LOOK AT THE REVIEWS OF PRODUCTS THAT YOU LIKE OR ARE GIVEN.