KVM reaches 96% of the host PC's power

[cobito]

You might think that the main disadvantage of virtualization is that a virtualized PC is much slower than a physical PC. But with KVM, it's possible to get 96% of the power of the host PC. This is especially interesting for Linux users who want to run programs that are only available on Windows without using Wine.

This guy explains it in a video:

What he does is enable Intel's virtualization technologies and do "passthrough" to the graphics card. This means that the virtualized machine can directly access the physical resources of the hardware, or in other words, it handles the real graphics card directly instead of a virtual one.