If you have an Intel Mac next to it, there's a clear noticeable difference assuming macOS is on it.
If you put W10 on the Intel Mac, it is much faster than macOS on it (from my own experience). If we could run W10 or Linux on M1, it will be much faster than Intel Mac.
Another example, Windows 10/11 on ARM in Parallels on my MBA m1 is much faster than Surface Pro X, a MS-tuned/customized device.