Sorry, guys, I already know Linux. I use Linux since the beginning of this millenium. I know how to configure Lazarus and Freepascal under Linux and Window. Thanks for that but it was more the hardware question because it was clear that this will become a dual-boot machine. Linux will be some Ubuntu flavour either Kubuntu or Linux Mint KDE. I think I will go with that Athlon X4, I think that's almost 3-4 times faster than my actual PC according to the benchmarks. As for the Mac: it's too expensive (even a Mac Mini) currently. Btw, for development, I will have a closer look at Asphyre Sphinx 3. Seems what I need although I'm missing some beginner's tutorial.