The only problem I have with Box bought prebuilts is the power supply is usually sadly lacking. The last rig I bought before I started building my own had a 300 watt power supply. So any time it went under load it was seriously hampered. And also made it more expensive to upgrade. Because even though it had expansion slots for graphics cards etc. The power supply could not handle the added hardware. So straight out the door on any future upgrading you are probably going to have to replace the PSU first. Otherwise it looks like a pretty decent machine. Good luck and happy gaming.
no, for that price, you could get a 4GB GDDR5 GPU with a 256 bit bus for the same price if you went with a little bit weaker processor and built it yourself.