Weston with kopper and zink uses more watts
On RX560, Weston running with Radv/Zink + Kopper uses 3-5 watts more at idle than Radeonsi + LLVM.
If I start Weston with Radeonsi + LLVM, uninstall Radeonsi + LLVM, install Radv/Zink + Kopper and run a browser using MESA_LOADER_DRIVER_OVERRIDE=zink, idle is almost the same as with regular Radeonsi + LLVM.