Now that we know how graphics cards handle the Duke, let’s consider the CPU side of the equation:
This game clearly works fastest on the Intel Core-i5 2500K, but even at 2.0 GHz the Phenom II X4 produces smooth-enough frame rates. Now we’ll reduce the number of execution cores:
The triple-core Phenom II X3 achieves almost the same result as the quad-core implementation, but the frame rate is severely reduced with only two cores active. Having said that, a dual-core chip should be enough (paired to a decent graphics card) to generate decent frame rates. We couldn’t get a Phenom II with three cores disabled to run the game, unfortunately.