Mainly for making music, some plugins that are doing simulations are very computationally expensive, so it is not possible to run many instances in realtime usi

Mainly for making music, some plugins that are doing simulations are very computationally expensive, so it is not possible to run many instances in realtime using typical 4-core PC. So multicore cpu like in my case helps a lot with this. Another thing is that I use a lot of virtual machines for my work, so it is handy to have when launching a lot of them etc. You also get the benefit of having more memory slots available. In terms of X99 - I had i7-5820K cpu which I was maxing out all the time and since X99 is supporting XEONS as well, i decided to keep it for money reasons :) I could also keep non-ECC memory, so that was a plus.