Intel Core i5-2520M and The Asus K53E Notebook

Article Index

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.

Audio Conversion and Encoding

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.

Related content