加強電腦問題!!已經有2g啦,但係一d game仲係玩唔順

Mainboard :Unspecified NF-MCP61
Chipset :Athlon 64 / Opteron HyperTransport Technology Configuration
Processor :AMD Opteron @ 2200 MHz
Physical Memory :2048 MB
Video Card :Nvidia Corp Nvidia Corp

如上
玩一d game我想開到盡
唔知有咩要換?(8600gt最好唔好搞)
如果我加ram加到4g唔知你唔係好d呢?
如果解答者有問題關於我提供既資料不足
我會再補充