Rules regarding "hardware unlocking":
"It is allowed to unlock extra cores and cache if your processor allows that. Again, you do have to submit your result to the category of the original hardware."
This is the rule for CPUs, but as there is no other rule for GPUs specifically, this one must be valid also for video cards? Som, 290 unlocked to 290x -> sub as 290?
I guess this should be discussed internally... There should be a definitive answer to this question.