The Game Rundown: Finding CPU/GPU Bottlenecks, Part 1
Wondering if your favorite game wants more CPU or GPU muscle? We tested 20 different titles using a GeForce GTX 460 and a Core i5 processor (one of our favorite configs) in order to figure out where a solid mainstream machine gets hung up.
Call Of Duty: Modern Warfare 2
Modern Warfare 2 reacts strongly to CPU performance. The difference between one and two CPU cores is tremendous. Using just one core severely limits graphics performance. The frame rates increase only slightly when overclocking, though, so the GPU takes over as the key performance determinant. Also, it seems there is actually a slight performance hit when using four (instead of two) cores.
Up to 710 MB of graphics memory gets used with AA activated.
To increase frame rates, you really need at least two CPU cores. Using just one will hold back performance.
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