>>51068709A brand-new 14nm Skylake i7-6700 is clocked only 20% faster than a seven year old 45nm Nehalem i7-930 and is at absolute best 30% faster clock-for-clock outside of special newly accelerated shit like encryption.
Both are/were 4 core chips with a roughly ~$300 launch price.
Sandy Bridge, Haswell, and Skylake have been horribly meager improvements over Nehalem, and litho shrinks haven't boosted clocks very much even though consumer level core counts have been stuck for most of a decade.
Cannonlake (10nm) has already slid to 2H'17, and nobody knows whether next year's Kaby Lake will be worth a shit.
CPUs are already stagnant as fuck, so don't sweat it too much.
GPUs are catching up to the ~14nm litho stage, but there won't ever be another jump in improvement for them like 28->14nm will bring, until we find something magically better than silicon.
