Intel Core i7-2820QM Mobile Sandy Bridge Processor

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 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.

In multi-threaded performance (Lame MT actually makes use of two threads), the new Core i7-2820QM puts up times some 42% faster than the next fastest processor in our test, the Core i5 540M.  In single-threaded performance Sandy Bridge is about 14% faster than the previous generation Core i7-920XM.

Related content