360 and new TV, or new computer tower

hey guys I have saved up $1600USD and have two options get a new TV and a Xbox 360 for about $400 for the Xbox360 and $800 for the TV, or build a new computer tower for $1200 to $1300.

I really love to build computers, but theres some really cool games for the
360, but my computer is 3 years old and upgrading it is useless, but I really do need a new TV my curent one doesnt have AV ports on it. but theres also some awsome computer games that are coming out and the games
I have on my computer right now dont run well. so /comp/ please give suggestions

>>28
my processor: $40
my ram: $150
my motherboard: $50
my hard drive (after rebate): $40
my 20" flatscreen 1600x1200 monitor: $20 (got it broken and fixed it)
my case and power supply: $50
my video card: $200

Specs: processor 2.4ghz p4 oced to 3.0, 1gig pc4400 @1ghz fsb, Nvidia 6800GT, 200ghz Maxtor hdd, 500 watt PSU, 20" flatscreen LCD

Computer total cost: $550
XBOX + 20" flatscreen HDTV from Best Buy: $1098 plus tax