What rating and price would you give this gaming pc?

These are the specs: Gigabyte 78LMT USB 3.0 Motherboard Technology AMD Bulldozer FX 4100 3.6ghz 8mb Cache 1tb Sata Hard Drive 8gb DDR3 1600mhz Memory Nvidia GT640 2gb Graphic Card With HDMI Galaxy 3 Gamers Style Case 24x Dual Layer Sata DVD Writer 500 Watt Branded Power Supply I want to know what you would rate this and if there's anything in it that you recommend replacing. Right now it cost $407(310 euros) so I might buy it but I want to make sure its good and the price is reasonable.