Very informative. Thanks.

Agreed, very informative. Thanks. I am really curious how MS Virtual PC now measures compared to the other two given the time since the last use. I've tried using VMware Player, which is supposed to be able to use Virtual PC vmc and vhc files, but this resulted in an error message. Perhaps because I'm comfortable with Virtual PC I've continued to use it. Stephen

What about CPU Utilization when both host and guest OSes are idle? That would help me make a choice. Thanks

This is pretty good comparison, but I think it would be more productive to compare apples to apples by putting the free VMware server up against VirtualBox. I am willing to bet that VMware has cut back on some of the performance stats on the free version to try to get people to buy the Workstation or ESX Server.

Also, VirtualBox has some other "enhancements" over VMware since VMware has no seamless mode (at least not in the free version) which I find very useful when running Windows apps on my Ubuntu box.

Good article though, I really liked the charts... pictures are always good...

Under "file system" graph: why is lower transfer speed described as being better?

Why no testing of both SCSI and ATA emulation?

Article was informative but I am still not able to conclude which one is better option.

Can you test latest versions from virtualbox and vmware (from octobre 200?