If i upgraded from an 3570K to a 3770K would I see more improvements from Virtual Box, because of the Hyper threading? I'd like to have one Virtual Machine on all the time as a game server with 2 virtual cores, and still be able to game on highest settings on Skyrim, and other games. And when I'm not gaming I sometimes edit videos, and multitask. My question just really pertains to, is if I can benefit with Virtual Box from the higher cache and more threads the 3770K has to offer.
I've been looking into running two different game servers, though not at the same time. A Minecraft server with ten people max probably for that one on virutal box, and a dedicated server when and if in the future people can have their own dayz servers.