Install a 3rd party VESA graphics driver or disable hardware virtualization. Slow because VirtualBox is not optimized for it. To get a list of commercially supported guest operating systems of VirtualBox, please follow this link. This table reflects operating systems which should work with the most recent version of VirtualBox but without any guarantee. Rows marked with an asterisk (*) contain information reported by users and not verified by the VirtualBox team. 64 bits isn't currently much of a reason to select one or the other.The following table gives an overview of how well VirtualBox operating systems work in its virtual machines. There are theoretical performance advantages to a 64 bit systems caused by more registers, wider memory fetches (that is, more bits read per read operation), and so forth, but the data I've seen so far suggests that performance of 32 vs. This article from AMD (warning: PDF) discusses 64-vs-32 bits in some detail.

The varnish http cache is a prime example of this.

This affects not just 'real ram', but their entire virtual address space.which is a particular problem if applications plan to make extensive use of virtual memory via mmap() or other techniques. While you can get your 32bit kernel to address more than 4GB of RAM, individual processes will still be limited to 4GB. The biggest is, as you say, the ability to address large amounts of memory. There are a number of advantages to running in a 64 bit environment. Are there any benefits or disadvantages between 64-bit and 32-bit virtualization, except theĤ gigabyte memory limit on 32-bit machines.

Virtualbox 64 bit amd