ARMA II System Requirements

Minimum:
OS: Windows XP or Windows Vista
Processor: Dual Core CPU (Intel Pentium 4 3.0 GHz, Intel Core 2.0 GHz, AMD Athlon 3200+ or faster)
Memory: 1 GB RAM
Graphics: GPU (Nvidia Geforce 7800 / ATI Radeon 1800 or faster) with Shader Model 3 and 256 MB VRAM
Hard Drive: 10 GB free HDD space

Recommended:
OS: Windows XP or Windows Vista
Processor: Quad Core CPU or fast Dual Core CPU (Intel Core 2.8 GHz or AMD Athlon 64 X2 4400+ or faster)
Memory: 2 GB RAM
Graphics: Fast GPU (Nvidia Geforce 8800GT or ATI Radeon 4850 or faster) with Shader Model 3 and 512 or more MB VRAM
Hard Drive: 10 GB free HDD space