Computer specs help

Hey, I'm going to buy a new computer but my budget is limited.

So far i've found this computer for a ultracheap price:

Processor: AMD Phenom II X2 555 3.2GHz
• Motherboard: MSI 770-C45
• Memory: 4GB DDR3 1333MHz
• Harddrive: 500GB SATAII 7200rpm
• Dvd: DVDRW DVD-/ +RW
• Sound card: int.
• GPU: ATI HD5750 1GB GDDR5
• quality 400W 12cm FAN

But also my goal is that I could play most new gen games on high or at LEAST in mid graphics. So what do you think?

looks like a capable PC. Maybe you'd want to upgrade to a quad core processor after a while.