flac
Intel Core i7-5820K testing with a ASUS X99-M WS and ASUS AMD Radeon HD 5000/6000/7350/8350 1024MB on Ubuntu 14.04 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1510207-SO-FLAC9734635.
FLAC Audio Encoding
WAV To FLAC
Phoronix Test Suite v10.8.4