Looks like there is only one significant process of VirtualBox - there is no other above 1% CPU that can possibly belong to VirtualBox during the tests. The 2 apps I run are understandably much more CPU intensive than Notepad (which I feel can be a negligible process on modern computers). They are securities trading software somewhat like MetaTrader that many may know. They receive price information and update charts in real time. It involves communications and 2D graphics. While they are not 100% compatible with Wine, they perform normally under Wine - not too much unusual than under XP.
