20分} 顯示卡GeForce 8200問題 打機勁疾

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.080814-1233)
Language: Chinese (Regional Setting: Chinese)
System Manufacturer: ECS
System Model: GeForce 8000 series
BIOS: Default System BIOS
Processor: AMD Athlon(tm) Dual Core Processor 5050e, MMX, 3DNow (2 CPUs), ~2.6GHz
Memory: 3328MB RAM
Page File: 522MB used, 4688MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode

唔知點解打機勁疾
例如left 4 dead cs:s
我將佢地d畫面set到最差都係勁lag
有無高人幫手解答解答