I installed macOS High Sierra on QEMU KVM. I allocated it 4GB ram and 4cores. Ran geekbench on it, and found that it scored more than Ubuntu running as host.
I used geekbench 4 as Geekbench 5 aint compatible with High Sierra.
Ubuntu scored 2676 Single core and 8484 on multi core, while macOS scored 3763 single-core and 9341 on multi core.
I am surprised how it, being virtualised, was able to beat a normal machine, even though what I assigned to guest OS was half of host.
Its been 2-3 weeks i installed ubuntu, and I am facing some issues, The window pop ups leave there left overs. For better explanation I am leaving a video recording and Screenshot of the problem. From what I see, it is related to gfx drivers.
OS:- Ubuntu 20.04
Kernel: x86_64 Linux 5.7.1-050701-generic
Desktop Environment: Xfce
Window Manager: Gala
CPU: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx @ 8x 2.1GHz
GPU: AMD RAVEN (DRM 3.37.0, 5.7.1-050701-generic, LLVM 10.0.0)
(These values are taken as is)