I had a free sub-domain name go.to/blah offer for life, they started charging, and still went under. Bought by another company, I can't even get that subdomain

I had a free sub-domain name go.to/blah offer for life, they started charging, and still went under. Bought by another company, I can't even get that subdomain name any more. All large silicon chips (dram, CPU, GPU, FPGA, SSD, etc) are built with spare sections to replace non-functional ones. A 6 core CPU could be really only 6 but could also be a disabled 8 core when not enough people buy the more expensive 8 core, and they built too many of them. GPUs can be the same, but there are a dozen different functions that could be broken, so they sell it as the next lower SKU. For example, mining chips don't need HDMI, so if HDMI is broken, normally you would toss a 99% good chip. Contracts for digitally controlled goods need proper consumer protection. Tesla just happens to use the feature a lot. Much cheaper to lose 30kWh worth of raw material that might not have passed qualification, and sell it as a 60, than pay for inventory, scheduling, and swap/configuration stations on your assembly line. Also, if rumors get out that SKU xyz CAN be overclocked or unlocked 10% of the time when a higher chip is used, people will buy and return 9 cards before getting the bonus, causing lots of grief to the entire supply chain and 9x packaging/refurb costs, and then have to sell as open box at a lower profit. Not gonna happen. These locks are heavily encrypted, or physically unaccessible.