1. It’s still effectively built to run at 10-15W like the iPad chip. It’s not that big a change. The M1 and the A12Z are very similar beasts. 4+4 CPU cores, 8 GPU cores. The key difference is using the newer A14-derived CPU/GPU cores, a reasonable uplift in max clock speed over the A14, and adding Thunderbolt I/O. The performance difference between an A12Z and the M1 lines up really well. The A14 in particular is a 3Ghz chip, while the M1 is 3.2Ghz. The M1 isn’t new in this regard.
M1 is still the first chip Apple has built that has to sustain 15W max power. Or are you going to tell me it doesn't matter because the iPhone and iPad can do the same?
P.S.: also, you're basically suggesting that when the Mac Pro gets a 32-core M1Z or whatever processor Apple wants to push into it, that... it's basically using an "overgrown" iPhone chip.
2. iOS and macOS are both Darwin OSes. How the Window Server decides to keep things resident in memory or not is an orthogonal issue. Your average iPhone runs dozens of services in the background. Especially as Apple has been letting 3rd parties do more and more in the background on iOS as their SoCs have been getting better, more concurrent things have been happening on iOS. This isn’t new, nor is it relevant in terms of chip failure rates.
Uh... no. The way iOS and MacOS handle background processes and services are still vastly different:
Prepare your app to be suspended.
developer.apple.com
Apps don’t normally receive any extra execution time after they enter the background. However, UIKit does grant execution time to apps that support any of the following time-sensitive capabilities:
Audio communication using AirPlay, or Picture in Picture video.
Location-sensitive services for users.
Voice over IP.
Communication with an external accessory.
Communication with Bluetooth LE accessories, or conversion of the device into a Bluetooth LE accessory.
Regular updates from a server.
Support for Apple Push Notification service (APNs).
You're grossly over-simplifying key mechanical differences by saying the OSes are built on the same architectures. By that token, you're basically saying Android is just like Ubuntu because they are both based on the Linux kernel. That cannot be any further from the truth.
There's a massive difference between running some tasks and stressing a part of the SoC, versus being able to fully saturate all processors in the SoC for extended period of time (note: "hours", not "minutes"). The latter is possible with MacOS, but not even remotely possible with iOS unless someone builds an app that specifically does that. But if such an app exists, iOS will eventually show the usual "iPad needs to cool down before you can use it" message, while MacOS will seemingly keep going until it crashes.
3. iPads and iPhones both thermal throttle under full load. iPads can usually go a bit harder than the iPhone. This isn’t new.
Throttling also means reducing both the thermal and power requirements. In a way, it makes the chip more stable than clocking it up and drawing more power. If you're going to tell me "that doesn't matter", then you're basically suggesting that overclocking a chip does not make it more unstable. I don't think that's how it works.
Apple introduced the iPhone when, in 2007? Two years after the Intel shift. “far longer” is a pretty ingenuous way to describe it. The folks running the silicon team at Apple have been designing silicon longer than Apple’s been using Intel CPUs.
Sigh...
en.wikipedia.org
The first known attempt by Apple to actually move to Intel's platform was the Star Trek project, a code name given to a secret project to run a port of Classic Mac OS System 7 and its applications on an Intel-compatible personal computer. The effort began on February 14, 1992, with the blessing of Intel's then CEO, Andy Grove.
Early 2000s
Then-CEO Steve Jobs announces the Intel transition at WWDC 2005.
In the years since the end of the Star Trek project, there were reports of Apple working to port its operating system to Intel's x86 processors, with one engineer managing to get Apple's OS to run on a number of Intel-powered computers.
In 2002, it was reported that Apple had more than a dozen software engineers tasked to a project code-named "Marklar," with a mission to steadily work on maintaining PC-compatible builds of Mac OS X.
Please know your history?
P.S.2: also, officially, if we're talking about Apple-designed SoC, the A4 was the first one:
en.wikipedia.org
And it wasn't released until 2010. That's still long after Apple released the first Intel Macs.