Im looking to buy a new machine, solely for music production where I mostly score to picture so I need to run video as well.
What is better? A higher speed that can over clock itself to 4.4 GHz but lesser cores (Quad 4.0 GHz i7), or more cores but cannot over clock and has lesser speed (6-core 3.5 GHz)?
I suspect a detailed answer requires detailed research. Scott from ADK posts here sometimes and as a PC DAW builder he has a lot of data from his own tests.
Which hex core model? the 5820 is advertised in some builds on an Asus X99 board clocked at 4.2Ghz (for example http://www.scan.co.uk); so that might be better than a 4.0Ghz four core even if it can overclock to 4.4Ghz.