Windows 7 i5

I run cubase on a P5Q Q9550 @ 3.6 GHZ OC (8 years older). But improvements have gone in little steps since then (except for more cores then 4) So yours will be fine too and 8gb is plenty, unless you are a heavy Kontakt user with big templates.
If you over clock it a little to 3.6 a 4ghz it will be even faster. But depending on your work you might not need that. Good audio card with good drivers will make a difference too (I use RME)

Oh sorry you can’t really OC this CPU. Mayby to 3.5 but that is not worth it. You can run it permanently at turbo at 3.4.