DCRAW
Intel Core i5 testing with a Apple MacBook Pro and Intel HD 4000 1536MB on OS X 10.11.1 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1602190-KH-DCRAW288068.
dcraw
RAW To PPM Image Conversion
Phoronix Test Suite v10.8.4