I have never built a computer so I dont completely know what it involves.I want something i can turn in to a serious gaming machine but dont quite have the money.i am really tempted to buy this I know its not all there but i like what it has.
Buying a PC off the shelf and modifying it to be a powerful PC is NEVER a good idea. There are too many hidden factors like power supply and cooling upgrades, not to mention warranty being void - you may as well do the job yourself, we can help you here with that.
Its not a complete computer its just the case,motherboard,power supply,ram and processor. It still needs a video card, operating system and some other must have cooling. what i really want to know is if the motherboard and processor are a good combo.
I'm not a big fan of EVGA boards, or any boards with nvidia chipsets in them for that matter. You'd be far better off going with a solid Intel chipset board from Gigabyte, Asus or DFI. The RAM and Hard drive are fine, but I wouldn't use that PSU, you'd be much safer with a Corsair unit. Overall, I wouldn't say that bundle is worth going with.
In the last few months, the number of them that go wrong seems to be on the increase, and their technical support isn't that great either.
I would get the Quad. You are probably planning on keeping the computer for more than one year, and when thinking in a bigger perspective the quad core is a mucg better choice.
I dont know what cpu heatsink to get. Iam looking at this http://www.thermaltakeusa.com/Product.aspx?C=1148&ID=1557#Tab1 but i dont know if it will fit.
Don't bother with Thermaltake's orb coolers, they're not that good. Go with either one of these: http://www.newegg.com/Product/Product.aspx?Item=N82E16835186134 or this combination: http://www.ncixus.com/products/23531/ULTRA-120-EXTREME/THERMALRIGHT/ http://www.ncixus.com/products/17749/SFF21F/Scythe/