AMD Athlon II X3: Affordable Compromise

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Our iTunes test is simply the encoding of a MP3 file into AAC.

The X2 255/250 once again stand out with low AAC encoding times and excellent energy efficiency.


Our TMPGEnc test consists of encoding an XVID-encoded AVI to VC-1.

Most video encoding applications like TMPGEnc are multithreaded, so it is no surprise to see the X4 630 lead the pack by a considerable margin. The X3 440 places second tied with the X2 555 — in some circumstances, extra cache and a clock speed bump can overcome a higher number of cores. In terms of power consumption, the X3 440 and X2 255 were a little more energy efficient than expected.


A similar test to TMPGEnc, only this time encoding to H.264.

Programs like HandBrake that make better use of multiple cores, favor 3/4 core processors heavily. Even the 2.5 GHz X3 705e and X3 415e performed well in this test.

Benchmark Power Consumption

Our timed benchmark results multiplied by the average power consumption during each test gives us an estimate of how much total power was used during testing.

When it came to how much power was expended performing our timed benchmarks, the difference between the processors was small. The X3 435 had the highest consumption at 35.72 watt-hours, but this was only 18% higher than the must frugal CPU of the bunch, the X3 415e.

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