Here are the minimum and recommended system requirements to run Call of Duty 4: Modern Warfare smoothly and efficiently without any crash, freeze, slowness etc. on any computer;
Minimum System Requirements:
CPU: Pentium 4 2.4 GHz/ Athlon 64 2800+ (Intel & Athlon 1.8 GHz Dual Core or better supportedRAM: 512MB RAM (768MB for Vista)GPU: 128MB 3d Hardware Accelerated card required-100% DirectX 9.0c compatible and latest drivers (NVIDIA GeForce 6600+ / ATI Radeon 9800 Pro+)DirectX: DirectX 9.0cOS: Windows XP/Vista onlyHDD: 8 GB of uncompressed free hard disk space (plus 600 MB for Windows swap file)
Recommended System Requirements:
CPU: 2.4 GHz dual core or better is recommendedRAM: 1 GB (2 GB for Windows Vista)GPU: 3.0 Shader Support recommended. Nvidia Geforce 7800 or better or ATI Radeon X1800 or betterDirectX: DirectX 9.0cOS: Windows XP/Vista onlyHDD: 8 GB of uncompressed free hard disk space (plus 600 MB for Windows swap file)
Please also have a look at other posts under “System Requirements” category to view & check if your computer system is powerful enough to run other games like Call of Duty 4: Modern Warfare smoothly.