Intel Core i5-2520M and The Asus K53E Notebook
LAME MT Audio Encoding
In our custom LAME MT MP3 encoding
test, we convert a large WAV file to the MP3 format, which is a popular scenario
that many end users work with on a day-to-day basis to provide portability and
storage of their digital audio content. LAME is an open-source mid to high
bit-rate and VBR (variable bit rate) MP3 audio encoder that is used widely
around the world in a multitude of third party applications.
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In this test, we created our own 223MB WAV file (a hallucinogenic-induced Grateful Dead jam) and converted it to the MP3 format using the multi-thread capable LAME MT application in single and multi-thread modes. Processing times are recorded below, listed in seconds. Shorter times equate to better performance.
Since the Core i5-2520M's base clock speed is about 200MHz faster than the Core i7-2820QM, we were surprised to see it lag Intel's flagship mobile quad-core in this test. Perhaps the i7's larger L3 cache gave it a bit more juice than we first anticipated. In the multi-threaded test, the Core i5-2520M fell just a couple seconds short behind the i7 chip, where the i7's dual-core Turbo Boost speed of 3.3GHz gave it an edge. Finally, again, Sandy Bridge is significantly faster than the Arrandale-based Core i5-540M, with roughly a 30% performance advantage.
