Sandy Bridge, Part 4: Core i5-2400, i5-2500K and i7-2600K CPUs

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Video Encoding

Our video encoding benchmarks are representative of how well the CPUs respond to multithreaded applications. This is where quad and hex core processors typically shine.

In TMPGEnc, Sandy Bridge pulled out yet another victory, but with slimmer margins in both time to completion and energy efficiency.

In our last test, the three new high-end Sandy Bridge chips finally met some stiff competition from AMD. HandBrake is one of the few applications that utilizes all of the 1100T's six threads, giving very good results. Unfortunately, it also used about 50W more power.

Overall Performance

The Core i5-2400, i5-2500K, and i7-2600K dominated all portions of our test suite, an impressive feat considering there were both threaded and unthreaded tasks involved. The three completed our test suite in 74~82% of the time required by AMD's flagship Phenom II X6 1100T.

The total power consumed running our test suite was even more impressive than the pure performance. They were effectively twice as efficient as the Phenom II's and the i7-965.

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