Gimp
2 x Intel Xeon X5560 testing with a IBM 49Y6512 and llvmpipe 16128MB on Ubuntu 17.10 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1801050-AL-GIMP6350715.
GIMP
Test: resize
GIMP
Test: auto-levels
GIMP
Test: unsharp-mask
Phoronix Test Suite v10.8.4