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Discrete GPU Performance
The Core i7-3770K was a fraction faster than the i7-2600K when testing in Dirt 3, making it the fastest processor tested in this game using the same graphics card (GeForce GTX 580).
The Core i7-3770K was again the fastest processor tested, this time when benchmarking with Just Cause 2. The Core i7-3770K was a fraction faster than the Phenom II X4 980 and Core i7-2600K processors.
The last game we are going to look at when pairing the processors with a discrete GPU is The Witcher 2 and here you see that the Core i7-3770K delivered virtually the same performance as the i7-2600K, though it was a fraction faster.