Here are the minimum and recommended system requirements to run Half-Life 2 smoothly and efficiently without any crash, freeze, slowness etc. on any computer;
Minimum System Requirements:
CPU: 1.2 GHz ProcessorRAM: 256MB RAMGPU: DirectX 7 level Graphics CardOS: Windows XP/2000
Recommended System Requirements:
CPU: 2.4 GHz ProcessorRAM: 512MB RAMGPU: DirectX 9 level Graphics CardOS: Windows XP/2000
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 Half-Life 2 smoothly.