I think this report is pretty sketchy on details, and should be viewed with some skepticism. I think a lot of the AMD vs Intel talk is really overblown as well, as it is the perspective of people who frequent these forums and primarily think about desktop PCs.
Intel's main competitor is no longer AMD, it's the ARM architectures primarily at Amazon but also coming in from Apple. AMDs growth has always been capped by the capacity and wafer allocation of TSMC, and TSMC is not even close to dedicated to AMD. Apple, Qualcomm - both of which dwarf AMD - along with an army of dozens of other customers also have to be serviced by TSMC. Add in that half of TSMCs fabs are 12nm+, and there's never been any realistic chance of AMD taking really huge market share from Intel in the short to intermediate term. Maybe in 5-6 years, when TSMC has a few more 5nm and below fabs online, but not right now.
This all showed up in AMDs earnings. Their main growth was +176% in embedded, which is another way of saying gaming consoles. In server/client, they were +18%. The overall market was +26%.
Intel's shipments in client went up 33% in Q4.
The obvious consequence of those numbers is that Intel gained market share - if simply no other reason than that they were the only ones capable of ramping production sufficiently to meet demand.
The big hit to Intel in Q4 was not even server chips overall, which also went up 9% for the year. It was very specific, in the cloud compute area, and the big hit seems to be from
Amazon Graviton 2 which is a 7nm 30B transistor 64 core chips made specifically for virtualization. The other aspect is that Intel had a blowout quarters in Q2 and Q3, driven by servers, so without new processors to sell they are once again competing with themselves.
With Intel for 2021 we have 10nm (equiv to TSMC 7nm) expanding into more laptops and servers, and we have Intel 7nm (equiv to TSMC 5nm) coming online at end of year for AL. AMD will not have 5nm until Zen 4 maybe in 2022, and last report I read was that
Apple had 100% of TSMC 5nm capcity booked for 2021.
What this all boils down to is that yes, production capacity matters, and AMD doesn't have it.