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CPU Performance (Continued)
Ivy Bridge was less impressive in our WinRAR test, barely finishing ahead of the i7-2600K.
The i7-3770K was the king of our iTunes encoding test, completing the task ~7% faster than the i7-3960X and ~9% faster than the i7-2600K, while using the least amount of power.
A 12% performance improvement over the i7-2600K was noted in our TMPGEnc video encoding test, as well as a savings of 2W. It just lost out by a hair to the i7-3960X, but it also used about two thirds the energy.
Our HandBrake encoding test was one of the few areas that AMD's Bulldozer FX-8150 processor shined, leveraging its eight core design to a rare victory over Sandy Bridge. Sadly it was not to last as Ivy Bridge beat it handily and with a savings of almost 80W.
We arrived at our overall performance score by weighing each test equally (each composing 1/6 of the total). Mathematically, a processor that finishes first in every single test would receive a score of 100.
The i7-3770K ran neck-and-neck with the i7-3960X in most of our tests, but the Sandy Bridge Extreme CPU's superb HandBrake result enabled it to retain its crown with a total score of 97.4. The Ivy Bridge chip did very well though, garnering a ~9.5% performance bump over the i7-2600K. If the i7-2600K were clocked 100 MHz faster to match, at best the performance difference would still be ~6%.
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