In Macbook Pro 17", what's the difference between processors?
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2.5 GHz (2860QM)
- 2.5GHz base clock, 3.6GHz max TurboBoost clock.
- 8MB cache.
- Bus/core ratio: 25.
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2.4 GHz (2760QM)
- 2.4GHz base clock, 3.5GHz max TurboBoost clock.
- 6MB cache.
- Bus/core ratio: 24.
You can compare the features side-by-side here.
The actual difference is 4x0.1 GHz.
The links will tell you that there is no difference besides the clock speed, cache and bus/core ratio. Exactly the same specifications for advanced technologies, memory and expansions.
According to this source there is a 5.2% difference in performance. 7987 vs 7592 with PassMark.