Is this a good computer for games? And I know the power supply is low. Im getting another one, but how am I supposed to know which one to get? I know what watts I need I just need to know if it will fit in the case etc. what about this http://www.compusa.com/applications/sear…

Components

* • Genuine Windows Vista Home Premium with Service Pack 1 (64-bit)
* • Intel(R) Core(TM) 2 Quad processor Q8300 [2.5GHz, 4MB L2, 1333MHz FSB]
* • 35% OFF! 8GB DDR3-1066MHz SDRAM [4 DIMMs]
* • FREE UPGRADE! 640GB 7200 rpm SATA 3Gb/s hard drive from 500GB

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Is this a good computer for World of Warcraft, warcraft 3, Starcraft 2, and Diablo 2? Mainly Starcraft 2, and can this power supply handle this? And if not how am I supposed to find out what power supply will work for my computer?
Components

* • Genuine Windows Vista Home Premium with Service Pack 1 (64-bit)
* • Intel(R) Core(TM) 2 Quad processor Q8300 [2.5GHz, 4MB L2, 1333MHz FSB]
* • 35% OFF! 8GB DDR3-1066MHz SDRAM [4 DIMMs]
* • FREE UPGRADE! 640GB 7200 rpm SATA 3Gb/s hard drive from 500GB
* • 1GB ATI Radeon HD 4650 [DVI, HDMI, VGA]

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