I think 8x improvement is too shabby when it means sacrificing the ability to gpu mine also. whos gonna really benefit? those with decent cpus and decent gpus in the same rig. most gpu miners have shitty single core processors which in this instance will be turned into 8 threads but again to do this they lose the ability to gpu mine other coins.
High end AMD cpus are pretty cheap and it`s not that changing mobo and cpu on mining rig is hard.
this is a good point but again it will take a monetary investment and leave them unable to gpu mine. say they buy quad core amd chips, this will give them essentially 32 cores. o not be able to GPU mine the sacrifice isn't worth it, I have 2x12 core xeons and only get around 280hvc per day from them and the difficulty is low now. Like I said the ones who will benefit are those with good cpus a single nice GPU as well, basically gaming rigs.