Is the vero 4k is quite powefull to retro gaming?

Technically yes.

N64 works for me.

And I’ve successfully built and tested ScummVM and the libretro cores for mame-2003, PCSX, SNES, Megadrive and GameBoy.

Not cracked mame-2010 yet.

Dreamcast is OUT, which is my only disappointment, as Reicast contains assembly code that will not run on the AARCH64.