http://www.ibuypower.com way better prices i would expet. Sony doesn't have this X series on its website.
anyway i was able to make an extremely nice computer (anthlon-64 FX-57, Nvidia Geforce 7800GTX, plus the best lcd moniter they had, 1gb of ram, 5.1 speakers with subwoofer, 7.1 enabled sound card, etc.)
all this for under $3000
i was also able to make an intel comp with 3.8 ghz, nvidia geforce 7800GTX, the best lcd moniter they had,
2GB RAM, 5.1 speakers, 7.1 enabled sound card, 200 gb hard drive, for slightly less money.