AMD Athlon 64 FX-55 & Athlon 64 4000+

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Windows Media Encoder 9 & LAME MP3 Encoder

We continued our testing of the Athlon 64 FX-55 and Athlon 64 4000+ with a video encoding benchmark using Windows Media Encoder 9.  In this test, we took a 416MB Digital Video file and encoded to WMV9 streaming format.  The encoding times were recorded in minutes:seconds, with lower times indicating better performance.

Windows Media Encoder 9
More Digital Video Encoding


Video encoding has historically been one of the Pentium 4's strong suits, and in the Windows Media Encoder 9 test, the P4s were able to outpace the fastest Athlon by a minimum of nine seconds.  And the Pentium 4 560 was faster than the FX-55 by a full 12 seconds.  When comparing just the Athlons to each other, all of the 2.4GHz chips finished the encoding process within a second or two of one another, but the FX-55 was over 10 seconds faster than 4000+, FX-53, and 3800+.

LAME MP3 Encoding Tests
Converting A Large WAV To MP3

Next, we did some audio encoding with LAME MP3.  LAME MP3 is relatively new to our test suite, but we thought it was an important component to include as a performance metric.  Converting audio files to MP3 format is a very common task that many end users perform on a regular basis to facilitate portability and storage of their digital audio content.  In this test, we used a large 223MB WAV file (a never-ending Grateful Dead jam) and converted it to the MP3 format.  Processing times are recorded below in minutes:seconds, and once again, shorter times equate better performance.

There are a couple of interesting things to note in this graph.  First, notice that although the 3.6GHz Pentium 4 560 was faster than the 3.4GHz Extreme Edition in the WME9 video encoding test, it was a full seven seconds slower than the 3.4GHz EE here.  Secondly, the 200MHz clock speed boost over the other Athlons we tested gave the Athlon 64 FX-55 the extra horsepower it needed to pull into the lead, ahead of the Pentium 4s.  At 2:9, the Athlon 64 FX-55 was the fastest of the bunch, besting the 3.4GHz Pentium 4 Extreme Edition by one second.

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