P1nky :
Do you actually have documentation either from AMD or GF that says that Raven Ridge uses "14nm+"? Because I haven't seen any.
GF hasn't announced anything about a "14nm+" process.
Yes, the Raven Ridge reviewers guide has 14nm+ listed. At the time of review, I followed up with AMD's marketing department directly on the matter, and they confirmed that it was NOT 12nm, but rather 14nm+. Believe me, I had the same questions as you.
In either case, this is all marketing mumbo jumbo anyway. 12nm is not an optical shrink of 14nm. The processes have the same feature sizes, die area, and density (AMD has had to restate this repeatedly due to inaccurate reporting from other sites). So, it really is just 14nm with a few process enhancements. AMD also tweaked the die by using faster/leakier transistors in critical pathways, etc.
So, what is really inside Raven Ridge, 14nm or 12nm? Who knows. They call it 14nm+, though.