Yep. That said, Virtualbox still has some advantages mostly not related to the actual hypervisor and more related to the UI and other emulation details, so I use this patch to use Virtualbox on top of KVM on my machine.
https://github.com/cyberus-technology/virtualbox-kvm
From my PoV, it mainly is just missing support for more networking options. It's said that it isn't tested much on AMD, but I'm using it on multiple different AMD boxen with no issues.