@Fabio: This is on a Macbook Pro Late 2013, 2.3 Ghz, 16 GB. See last two rows. Seems only the FFT double-precision is faster than the CPU (about twice as fast). \ and * are much slower. Pretty crippled performance ...
Apple should have used the Quadro K1100M (same physical chip as the 750M without the crippled double-precision). From the looks of it, it's not really worth the effort of coding for the GPU on the MBP with 750M. You can just stick with the CPU. Problem is that if you want to buy the MBP without the 750M but with the same CPU, you end up paying the same price (at least that was the case back in May when I bought it).
Results for data-type 'double'
(In GFLOPS) Results for data-type 'single'
MTimes Backslash FFT MTimes Backslash FFT
Great package. You can safely detect Ghostscript under Windows by reading the registry key "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Artifex\GPL Ghostscript" (if 64bit) or "HKEY_LOCAL_MACHINE\SOFTWARE\Artifex\GPL Ghostscript" (if 32bit).
Use Matlab's winqueryreg() function or execute "reg" via system() to read the Windows registry.