my computer is a dell optiplex gx620 and its specs are:
Intel Pentium D 2.80 ghz rated at 3.3 ghz (2 CPUs)
2 gb of ram
Nvidia geforce 8400gs
Windows 7 ultimate edition 64 bit
power supply: DELL 275 watt
Can anyone tell me if its a good system or i have to upgrade some stuff???