Is Intel Rocket Lake a 14nm version of Willow Cove?

The latest speculation about Intel's future desktop processor lineup is that Rocket Lake may be a 14nm adaption of Willow Cove. TechPowerUp writes there's some evidence that Rocket Lake could be a 14nm version of the cores that are used by the 10nm+ Tiger Lake mobile processors.

With all the issues Intel's been having with 10nm, there are rumors going around that the chip giant has basically cancelled 10nm for the desktop market. There may be a niche product here or there, but it's possible that most of the desktop lineup will remain on 14nm process variations until 7nm arrives. We can only guess why, but a likely option is that 14nm still offers higher clockspeeds and better yield than what 10nm currently has to offer for high-performance chips. This would explain why Intel is switching mobile to 10nm, as that's a market that benefits more from higher energy efficiency.

Previous rumors indicated that Rocket Lake would have eight cores maximum, which is lower than the up to ten cores offered by Comet Lake-S, but this new piece of information suggests Rocket Lake could offer sizeable IPC gains

Twitter user @chiakokhua, a retired VLSI engineer with high hit-rate on CPU microarchitecture news, made sense of technical documents to point out that "Rocket Lake" is essentially a 14 nm adaptation of "Tiger Lake," but with the iGPU shrunk significantly, to make room for the larger CPU cores. The Gen12 iGPU on "Rocket Lake-S" will feature just 32 execution units (EUs), whilst on "Tiger Lake," it has three times the muscle, with 96 EUs. "Rocket Lake" also replaces "Tiger Lake's" FIVR (fully-integrated voltage regulation) with a conventional SVID VRM architecture.

Here's the proper translation:

"Apologies, made mistakes copying the spec. RKL-UP3/S should be AVX-512."

"In plain language: RKL = 14nm version of TGL, minus iTBT, with weakened IGD"

"Plus changed VRM scheme to SVID." pic.twitter.com/B8pRLOnB7f

— RetiredEngineer® (@chiakokhua) 2 december 2019