Yeah, so GeForce/Quadro used to be a software only difference. Later on (around Fermi/Kepler) it became a hardware difference but cards could still be modded by

Yeah, so GeForce/Quadro used to be a software only difference. Later on (around Fermi/Kepler) it became a hardware difference but cards could still be modded by means of board straps and package traces. Kepler could literally have all its cores enabled with a simple bridge on one laser cut. That's fun but very hit or miss, the more cores are disabled the higher the likelihood they're actually defective so it was binned lower. Maxwell can have their Hwid modded but performance will be lower than actual Quadros. Newer cards have an even bigger performance difference, more hardware differences I think.