Left 4 Dead

Single Core Results (1920 x 1200)

Even at this high resolution, the effect of the processor's performance was noticeable in Left 4 Dead. With everything else equal, enabling Turbo Boost improved the frame rate by 3-4%.

Single Core Results (1280 x 1024)

At a lower resolution, the processor's performance became more of a factor (as the impact of the graphics card is reduced). Enabling Turbo Boost improved the frame rate by up to 7.3 %.

Multi Core Results (1920 x 1200)

When multi-core processing was enabled, Turbo Boost had absolutely no effect on the frame rate as the bottleneck was now the graphics card, rather than the CPU. In fact, both processors delivered the same frame rate, despite a 133 MHz difference in clock speed.

Multi Core Results (1280 x 1024)

At the lower resolution of 1280 x 1024 though, Turbo Mode had some effect on the frame rate. Enabling it improved frame rates by 2-3 %.

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