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In a word, no. The Sandybridge i7s and i5s from 2011 still measure close to the current lineup but they do so at the cost of more power and heat. It's pretty much plateaued now regarding speed. SSDs filled the void in big speed gains in the meantime but there's not much on the horizon that indicates computers will double in speed any time soon. Some stuff is being farmed off to GPUs but making everything massively pararllel is a huge amount of work for barley perceptible gains for most people.
Pardon me for not being up to scratch on tech, but is there intel chips fast enough to warrant a complete overhaul of the line? From a design point of view it'd be interesting, but is there heaps of power (PWRRRR) to get as well?