First of all, don't go to windows, get Linux of some sort (my favorite is any flavor of LinuxMint). Second, don't get that PSU, get a Corsair brand one (700watt should work fine, mine is 700 watt). Third, don't get that RAM, get this: http://www.newegg.com/Product/Product.aspx?Item=N82E16820233144 I have 16gb of it, works great all the way up to 1800Mhz and beyond. The 650Ti should be fine, but a 660 blows it away. EVGA is a good brand. Other than that, looks fine, might opt for a better case and cpu cooler (liquid is great if you can afford it) and I might opt for a Western Digital HDD. Have fun building! -NR