Hello,
I am building a gaming computer right now. Its my first computer that I have built. I have an idea of what I want to use but I want to ask you guys if it will work together. I want to keep it in the same relative price range. My main concern is that things won't work when I put it all together.
Case: Cooler Master RC-932-KKN5-GP HAF 932 Advance Full Tower Case - ATX, Black, SuperSpeed USB 3.0
Processor: AMD Phenom II X6 1090T Black Edition Thuban 3.2GHz Socket AM3 125W Six-Core Desktop Processor HDT90ZFBGRBOX
Power Supply: COOLER MASTER Silent Pro Gold Series RS800-80GAD3-US 800W ATX 12V v2.3 / EPS 12V v2.92 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply
Processor: AMD Phenom II X6 1090T Black Edition Thuban 3.2GHz Socket AM3 125W Six-Core Desktop Processor HDT90ZFBG
First that's not a good choice of motherboard. If you're going Intel there are much better choices.
Second that board won't work with that CPU. If you're using a P67 you will need an Intel LGA 1155 CPU (i3/i5/i7). If you're using AM3 you will need a 990FX board.
Basically beside the motherboard/CPU thing, your errors so far are poor choice of power supply, and you only really need 8gb ram assuming this is a gaming rig.
But don't worry, not bad at all for a first try, and welcome to the forums!