I built this PC mainly for gaming. It is a multipurpose PC, but it has what my laptop lacked - a dedicated gpu. My old laptop's specs were a sandybridge i3 and intel hd 3000 graphics. I couldn't run a single game - not even minecraft (sad). I did months of research (while saving money) to make sure I could play most games at good settings. I'm planning on playing GTA V, SWBF 3, and Witcher 3 mostly.
I chose the i5 4590 because it has great gaming performance (obviously). At first I thought about getting an i3, but figured I'd be settling for less. It does well. The MSI GTX 960 was the gpu I chose, which had a $20 mail-in-rebate, and was a great value card. It is the OC version + has 2gb of vram (I don't care if I could have had 4gb). Those two parts were the main focus, but I made sure the rest was well too. The tests I have done so far are blown away by this new power!
Problems: While building the PC, I had a few issues that scared me to death (they shouldn't have, I overreacted), but it all went well. My only real complaint was that the main motherboard power connector didn't snap into place until I put a lot of pressure onto it, which isn't terrible but it was hard convince myself that something wasn't going to snap (the video I watched showed him effortlessly sliding it into the board). There were lots of crunchy gritty scratchy sounds when installing components, but I've only read that it's normal. The important part was that it worked.
I did enough cable management to have good airflow, but it isn't perfect (and it sure doesn't look it), so I'll take some criticism.
I'm very happy with my PC.
Great motherboard. Only had a little trouble snapping the main power connector to it (a lot of trouble), but that could differ depending on the psu.
Has a little coil whine when fps skyrockets but otherwise performs well and is quiet.
This monitor does its job. Just make sure you're always looking at it straight on (bad viewing angles).