How many Mac Pros does Apple sell annually? A few hundred thousand? Certainly not enough to justify developing a more scalable workstation architecture for them. The current Mac Pros are relatively cheap, because the same architecture is also used in datacenters in massive numbers. With Apple Silicon, the R&D efforts must be funded by the sales of Apple workstations, which could make new Mac Pros much more expensive.
The alternative would be moving the line between consumer devices and workstations lower. In addition to Mac Pros, high-end models of iMacs, MacBook Pros, and maybe even Mac Minis could use the workstation architecture, and this would be reflected in the branding.
~1% of all Macs shipped are iMac Pros and Mac Pros. Based on how frequent it gets refreshed it could be ~25% of the iMac 27" Core i9 as the iMac gets refreshed annually while the Pro desktops gets refreshed every ~4 years.
Apple shipped an estimated
18.35 million Macs in 2019. So more or less 183,500 Pro desktops in 2019?
One implementation would be these Pro desktops will be using multiple SoCs shared with iMacs to be economical. With certain hardware bits to be disabled to allow for multiple SoCs to work well together. Decades ago this hardware technique have been done to allow 2 or more physically separate cores on a chip to work together on single logic board.
Or
Chiplets?
Or
Apple's Pro desktop chips will be the platform for their own
ARM-based cloud service.
I've read references that Apple uses Linux for their data centers. This may allow
Linux on Apple Silicon. Performance per Watt is very important to the cloud as well. It would make for marketing gold.
Eventually x86-based Apple data centers will need an upgrade so the upgrade path would surely be based on Apple Silicon.
If the
fastest supercomputer since June 2020 is ARM-based then why not use the
best performance per Watt ARM chip tech?
I am just extending current product line tech beyond its intended use case.
Think Apple's ARM efforts as a base for a donut mix. You can shape it donut shaped with a hole or without a hole. You can even even give it a floral or phallic shaped. Sugar raise it or dunk it in chocolate.
The donut mix could be the basis for a dinner roll or pizza dough.
A background of the persons who disagree with me would be interesting to see. Have they worked corporate, computer engineering, supply chain, manufacturing, R&D, marketing, sales, etc?