Optimus
Intel Xeon X3430 testing with a Dell 05KX61 and Matrox MGA G200eW WPCM450 on Ubuntu 12.04 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1401313-SO-OPTIMUS6287.
FFmpeg
H.264 HD To NTSC DV
Phoronix Test Suite v10.8.4