In what world is that not fraud? Imagine if Ford were to advertise a new F150 for an (apparently) good price and then offer two models:
"F150 V8": an expensive truck with a V8 motor.
"F150 V6" a cheaper V6 sedan.
Clearly, these are two different products, even though they can do the same thing. You're sneakily using a known naming convention in your official product name to deceive customers on the price perception of the 4080 and the performance of the 4080 12GB.