ArmA 2 needs almost more CPU than GPU power and is scaling surprisingly well with higher frequencies and additional cores - nevertheless a single core is too slow. Intel's Core i7 family is dominating the competition with the Core 2 Quad models about 20 percent behind them. The latter ones are about 20 percent faster than equal Core 2 Duos running at the same clock speed. While AMD's Phenom and Athlon 64 processors are able to compete with the Core 2, the Phenom II line is too slow in comparison - although this is obviously caused by the game itself.