The minimum memory requirement for Half-Life 2: Episode One is 4 GB of RAM installed in your computer. An Intel Core 2 Duo E8400 CPU is required at a minimum to run Half-Life 2: Episode One. The cheapest graphics card you can play it on is an NVIDIA GeForce 510.
Half-Life 2: Episode One will run on PC system with and upwards. Additionally it has Mac and Linux versions.
Note
Mouse, Keyboard
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