>Virtio drivers offer better performance. For Windows guests you can find
Ah, I remember that I installed virtio-win-0.1.102-1.noarch.rpm because without that, I saw BSOD during the installation of windows. I got that RPM from https://fedoraproject.org/wiki/Windows_Virtio_Drivers
Do you mean something different? I visited the link you gave, but I am not quite sure about their similarities.
How can I test that windows guest driver is working properly?