It's too good.Please tell me how good this system is
There are computers that are able play all games at maximum settings for a much smaller price tag. Especially that GTX TITAN, I'd highly recommend getting a PC with a GTX 780 instead if you want to go for maximum gaming performance.
However, unless you're fine with paying a lot, you can still get a much cheaper (usually about 2 times cheaper!) computer by building it yourself.