Should I Buy A Desktop? Or An Xbox For Gaming?

This desktop would cost me 588 dollars. An xbox would be about 215 (not counting 60 bucks per game)
I could get the 512 7350 radeon graphics for 50 bucks cheaper. Tell me what you think please.
Intel(R) Core(TM) i3-2120 dual-core processor [3.3GHz, 3MB cache]
FREE UPGRADE to 6GB DDR3-1333MHz SDRAM [2 DIMMs] from 4GB
500GB 7200 rpm SATA hard drive
1GB AMD Radeon HD 7450 [DVI, HDMI, VGA adapter]
Integrated sound
6-in-1 memory card reader, 2 USB, audio ports
Genuine Windows 7 Home Premium [64-bit]
Microsoft(R) Office Starter: reduced-functionality Word & Excel w/ ads. No PowerPoint or Outlook
HP keyboard and optical mouse
No Wireless LAN
SuperMulti DVD Burner
No additional security software
No TV Tuner
Included Features:
Type: Small, powerful PC
Chassis: mini tower
Memory card reader: 6-in-1 media card reader
Processors: Intel 2nd gen Core
Total memory slots: 2 DIMM
Ports: 6 USB (2 front, 4 back)
Audio: Front headphone (7.1 speaker capable)
Total slots: 1 PCIe (x16 graphics), 3 PCIe (x1), 1 MiniCard
Power supply: 220 watts
Storage bay: No media drive bay
Dimensions: 15.91″(L) x 4.43″(W) x 12.24″(H)
Modem: Optional
Network interface: Integrated 10/100Mbps (Ethernet)
Software kit: HP Pavilion bundle with MediaSmart Software Suite
DVD/CD burner software: Cyberlink DVD Suite Deluxe
Security software: Norton Internet Security 60-day subscription
Tools: Desktop icon for built-in desktop Help and Support Center
Warranty: 1-year limited hardware
Support: 1-year limited software, 1-year limited hardware support