Game mode was added for threadripper (workstation cpu) which has multiple dies - many games were hit heavily by numa. It's also available for desktop parts to

Game mode was added for threadripper (workstation cpu) which has multiple dies - many games were hit heavily by numa. It's also available for desktop parts to disable one ccx when game doesn't use more than 8 threads and you want to squize a couple more % of perf. Game mode is disabled by default, requires AMD software to be installed to enable - they went extra mile to gimp competition..