This is my first build in quite a while and I had a budget of $800. DO NOT MENTION GPU SAG I HAVE FIXED IT. This runs all games at ultra on my 1080p, 60Hz monitor.
CPU: I wanted to spend under $150 and this seemed the best choice saying it has 8 cores and is very easy to overclock. I got it up to 4.7 but it was running too hot under load. Have it set at 4.4GHz right now, completely stable.
CPU cooler: It's cheap good and very well know. Enough said.
Motherboard: I wanted a decent looking motherboard since my case has a window. This motherboard looks nice except for the red LED which clashes with the green. It supports sli and crossfire and 32GB of ram. It has USB 3.0 and excellent audio. My only issue is that one of the heat sinks makes it very hard to remove the CPU power connector.
Memory: It was cheap and looks cool and I'm going to get a second stick. I had to manually change the speed to 1600MHz.
Storage: I had to prioritize capacity over speed, this HDD is cheap, reliable and from a good company.
GPU: I got it for $160 on the day after Christmas. The Windforce cooler is a beast but creates quite substantial sag which I fixed with string. I know that 280s are fundamentally HD 7950s but I couldn't pass up the price.
Case: This case is excellent. It looks great, has a nice large window and a PSU cover. There is large amounts of cable management space and the LEDs are a nice touch. It easily fits the CPU cooler (which my old case, a Bitfenix Neos didn't) as well as easily fitting the GPU. It came with 4 silent fans and an included fan hub which is a nice touch. Great case, I highly recommend it.
PSU: It is 80+ Bronze easily handles the system and I got it for $30. I wish it had been modular but with this case that doesn't matter much.
Network Adapter: It works.
Case Fans: They are green.
Alien Isolation Ultra: 60fps Tomb Raider Ultra: 50-60fps Star Citizen Very High: 40-50fps Dirt 3 Ultra: 60fps Unigine Valley: 2362 Just Cause 2 Ultra: 60fps Thief Ultra: 60fps