I haven't opened a PC case since I had a 386 back in college. It was easier than I expected. The hardest parts were getting the CPU cooler onto it and mounting the motherboard because the CPU cooler made it tight.
I just ran the 3dMark demo from Steam, not the full version. It only let get a Performance score, not an Extreme or Entry score.
I had to remove some of the hard drive cases to let the graphics card fit but that was no big deal. I can still add two more drives. I will add a storage drive eventually, but I think the 256 GB SSD will be sufficient for a while.
I accidentally ordered the Cooler Master Hyper 212 Plus instead of Evo, but I am fine with that. I will overclock at some point.
I got the DVD drive because I already own Windows DVDs (I ran it using VMWare on my Mac). I am running Windows 7 64-bit.
I bought the 600 watt PSU with the intention of adding a second graphics card next year or the year after. I figure the prices will drop as the technology is older and the bitcoin/ litecoin miners stop buying the cards in bulk.
I have an Asus VK266 that I bought years ago for another computer and PS3 (1920 x 1200; 2 ms response time).
The case price includes a $20.00 rebate. The power supply price includes a $10.00 rebate.
I need to figure out a place to put it permanently, besides this shelf.