20 years ago people were overclocking AMDs by drawing on them with pencil: http://www.ocmelbourne.com/tutorials/PencilTrick/ http://www.ocmelbourne.com/tutorial

20 years ago people were overclocking AMDs by drawing on them with pencil: http://www.ocmelbourne.com/tutorials/PencilTrick/ http://www.ocmelbourne.com/tutorials/PencilTrick/ This last decade people soldered resistors onto cheaper NVIDIA cards, to make them behave as more expensive NVIDIA cards: https://www.eevblog.com/forum/general-computing/hacking-nvidia-cards-into-their-professional-counterparts/?PHPSESSID=3kesesdcd2gp8tftrkiihn6ef2 https://www.eevblog.com/forum/general-computing/hacking-nvid... So chipmakers have an incentive to bury the process in the chip and make it irreversible.