And memory is already expensive. It's downright hard to even get it though - you frequently would prefer not what's cheapest, but whatever is in largest scale production.
The only way I see HBM becoming competitive for consumer CPUs is if they solve the yield issues. Or if AI crashes so hard that people are putting those GPUs on fire sale and salvaging mass quantities of HBM off of them.
I’m assuming that it’s mounted in the same unit as the GPU, not in a handy-dandy socket.
It could be cracked open and extracted no doubt but if it’s glued in that’s going to be nigh on impossible to extract.
I had been pinning my hopes on HBM coming onto the second hand markets after there three years or so of use, perhaps I’m wrong.