I am building my very first desktop and I'm really nervous about purchasing all of the parts and of course, building a computer. Also It's going to mostly just be used for gaming, maybe some coding projects as well, but I'm perfectly content with using my school's servers for that. I am thinking about buying the following components:
Case: Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case
Power Supply: Antec High Current Gamer Series HCG-520 520W ATX12V v2.3 / EPS12V v2.91 80 PLUS BRONZE Certified Active PFC Power Supply
Video Card: GIGABYTE ATI Radeon HD6850 1GB DDR5 2DVI/HDMI/DisplayPort PCI-Express Video Card GV-R685OC-1GD
Processor: Athlon II X3 455 Box AM3 3.3G 512KB 95W
Hard drive: Western Digital 500 GB Sata 6.0 Gb-s 16 MB Cache 3.5-Inch Internal Bare-oem Drives WD5000AAKX
Hey buddy! All the specs are pretty good, but except the video card. You would get more performance with a GTX 560Ti than a 6850. Also, the processor is pretty sub-par. I would get a Phenom II X4 965 or a 970 BE (BE = Black Edition btw ).
I currently use a dual core AMD Athlon II X2 240, and a quad core such as the black edition Phenoms are a much better investment for gaming. If you want an Intel setup, go with the Core i5 2500K (remember, K = unlocked multiplier).
The unlocked multiplier in Intel CPUs (K) and the Black Edition AMD CPUs (BE) are overclockable. This can mean two things.
1) With an overclockable CPU, you can hold out on a CPU upgrade by overclocking your existing one
2) If you're getting slow video encoding, then you can again, overclock it to get better results.
Good luck with your build and if you need any help at all, we're always here