Arma 2 System Requirements

Arma 2 Minimal Requirements

Windows XP;
Dual Core CPU (Intel Pentium 4 3.0 GHz, Intel Core 2.0 GHz, AMD Athlon 3200+ or faster);
RAM: 1GB;
Nvidia Geforce 7800 / ATI Radeon 1800 or faster, with Shader Model 3, 256 MB VRAM;

DVD (Dual Layer compatible);
10 GB free HDD space

Arma 2 Optimal Requirements:

Windows XP / Windows Vista
Quad Core CPU or fast Dual Core CPU (Intel Core 2.8 GHz or AMD Athlon 64 X2 4400+ or faster)
RAM: 2GB
Nvidia Geforce 8800GT or ATI Radeon 4850 or faster, with Shader Model 3, 512 or more MB
DVD (Dual Layer compatible)
10 GB free HDD space