想跑动时下大部分游戏应该怎么换。求大神指教！

处理器Intel(R) Xeon(R) CPU E3-1230 v3 @ 3.30GHz
内存容量8.0GB
显卡NVIDIA GeForce GTX 660
硬盘1、SanDisk SDSSDHP128G SCSI Disk Device (128GB)
2、ST500DM0 02-1BD142 SCSI Disk Device (500GB)
主板B85M-DS3H (x.x)
网卡Realtek PCIe GBE Family Controller
声卡1、USB Audio Device
2、NVIDIA Virtual Audio Device (Wave Extensible) (WDM)
3、NVIDIA High Definition Audio
4、Realtek High Definition Audio
显示器GML2256 分辨率:1920x1080
当前操作系统Windows 7 64位