Here are the minimum and recommended system requirements to run Half-Life 2 Episode Two smoothly and efficiently without any crash, freeze, slowness etc. on any computer;
Minimum System Requirements:
CPU: 1.7 GHz ProcessorRAM: 512MB RAMGPU: DirectX® 8.1 level Graphics Card (Requires support for SSE)OS: Windows® 7 (32/64-bit)/Vista/XP
Recommended System Requirements:
CPU: Pentium 4 processor (3.0GHz, or better)RAM: 1GB RAMGPU: DirectX® 9 level Graphics CardOS: Windows® 7 (32/64-bit)/Vista/XP
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 Episode Two smoothly.