I built my last computer in 2008 so I figured it was time for a new one. I tried to keep the cost down as much as possible, looking for deals on everything I could. It's used for general browsing, occasional recording (guitar), and a few games with the occasional streaming.
I used a Gigabyte motherboard and AMD processor in my last build and it has always worked great for me, so I decided to stick with them and chose the 990FXA-UD3 Rev. 4. I wanted to get something I could overclock with safely. I bought the 8320 under the impression that I could overclock it easily to the 8350's speed or better. The CPU cooler was on sale, and the reason I decided to use water cooling is because I think it looks neat. It works extremely well with the arctic silver ceramic compound.
I got the RAM on sale, went with one 8gb stick with the intention of adding another in the future.
I had originally planned on re-using my 550TI, but I really started to get into BL2 and decided to upgrade to a GTX770. I still use my 550 for a dedicated physx card. When choosing a power supply I didn't take into account that i would be using a second card but I haven't had any problems.
After installing the 770, I learned that the game I play most is very CPU intensive, so I was a little disappointed that the frame rate would drop below 60 on certain maps with Physx on its highest setting. After a little research, I've concluded that the reason for this is because the game is poorly optimized. As far as my recording goes, it's perfect. I can record several tracks at once with all my VST plugins running which wasn't at all possible with my previous computer.
I have had my eye on the keyboard and mouse for a while, and couldn't be happier with them. I re-used my hard drive from my old computer while I wait for the right deal on an SSD. If I could do anything different, I would probably have chosen a nicer case, but other than that I think this build suits me well.
Update: 4/28/14 Installed a Samsung Evo 240GB SSD to use for the OS and a few choice games.