We decided to create a little performance index by taking all the benchmarks into account. Since computing-intensive applications require the most horsepower, we weighted them at 50%, games at 25%, PCMark Vantage at 12.5%, and 3DMark Vantage at 12.5%. The result is a 5.8% performance benefit for the Phenom II X4 versus the Athlon II X4 or a 5.5% performance decrease if you use the Phenom II X4 as the basis. You probably have different priorities, so it’s important to point at minimum and maximum differences. Some benchmarks benefit by 20%; others don’t benefit at all. Yet, the 5% to 6% aggregate performance difference is the number you should remember.

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