Here are the minimum system requirements to run Quake 4 smoothly and efficiently without any crash, freeze, slowness etc. on any computer;
Minimum System Requirements:
CPU: Intel® Pentium® 4 2.0 GHz or AMD® Athlon® XP 2000+ processor or higherRAM: 512 MB RAMGPU: 100% DirectX® 9.0c compatible 64MB 3D hardware accelerated video card requiredDirectX: 9.0cOS: Windows® XPHDD: 2.8GB of uncompressed free hard disk space (plus 400MB for Windows® swap file)Sound Card: 100% DirectX® 9.0c compatible 16-bit sound card and latest drivers
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 Quake 4 smoothly.