I run macOS (currently Mojave) on a 8 core, 16GB KVM on top of Debian on a 16 core 64GB Ryzen. It's faster than the (older) Mac Mini I used to use for everything I've tried on it. I don't know how it compares to current apple hardware, but for my purposes (doing the bits of macOS-specific code development in a large native cross-platform application), it's about as perfect as it gets.