I would expect speed among all three start options to be the same, since the graphics are always there somewhere. One can use the Virtualbox Remote Desktop server to see the headless guest while there is no Virtualbox window showing, and the graphics front end of the headless guest appears in the Remote Desktop client. Scottgus1 wrote:In my experiments, the graphics for a headless virtual machine with a GUI in the guest OS are always calculated and 'displayed', although there is no window to see them. Dec 2009, 20:14 Primary OS: MS Windows 10 VBox Version: PUEL Guest OSses: Windows, Linux scottgus1 Site Moderator Posts: 16771 Joined: 30. The guest graphics always can be seen by remoting in. Starting Headless and starting Detachable appear to be two sides of the same coin, do we start with a visible window or not? Regardless of the choice, the window can be turned on and off afterwards. With version 5, starting Normal always shows the guest window and there is no way to get rid of it while the guest is running.

In my experiments, the graphics for a headless virtual machine with a GUI in the guest OS are always calculated and 'displayed', although there is no window to see them.

Vmware vs virtualbox headless