Ah came by https://forum.renoise.com/t/dual-quad-core/18661
Searching by google seems easier than searching directly from the website from time to time eh 
…
I’m guessing E6600 would be beter worth my money then quad Q6600, as multi core support is not implented, right?
Edit: now I wonder by how much E6600 would outperform my p4 3,2mhz without Hyperthreading. When using Renoise that is :?