Guess its time to put in my updated two cents... About a year ago, I made the below post:
I’ve said this many times and I’ll say it again... I simply don’t see ARM working for an actual computer. Sure, the A11 Bionic benchmark the same score as the current low-end MBPs (which is really sad on Intel’s part), but that doesn’t mean the A11 can run several Windows 10 VMs, Photoshop CC 2018, and AAA games. The A11 and other ARM CPUs are designed for mobile usage, to make pretty AR selfies in Snapchat. Also, if Apple doesn’t encode the future ARM CPUs with x86 compatibility, a lot of people are going to leave. PPC adoption was slow because no x86 compatibility, so everything had to be encoded special for PPC and no one could run Windows natively. Now, these days, yes, Windows does run on ARM, but it’s not great. If Apple were to switch to ARM tomorrow, it simply would not work and it would alienate a lot of their clientele. In 2 years, it might be a completely different story. Apple would need to do serious work to turn their current ARM CPUs into full blown Professional Performance class CPUs, needing to double the power for the MacBook and MacBook Pro, iMac and Mac Mini, and triple the power for the Mac Pro and other high end, top-tier products.
Since then, my view points have made a complete 180 degree turn. I am extremely excited for ARM based Macs on the horizon. Apple has proven with the A12 and especially the A12X that these processors are gearing up to be ready to go head to head with Intel's latest offerings. Intel has been pushing 14nm++++++++++++++++++++++++++++++ for several years now with little to no improvements as they continue to struggle to get 10nm out the door. Meanwhile, TSMC got 10nm out the door with ease. The
benchmark of the iPad Pro 12.9in really proves just how insane these processors are. Even more so, the
comparison chart of iOS device benchmarks really shows off how much these CPUs improve year over year, something that simply hasn't been happening with Intel's offerings. For comparison's sake, this is the
benchmark of my main laptop, a 2012 15in MacBook Pro 9,1 that's been completely spec'd out. A new iPad Pro is significantly more powerful than my laptop, both in graphics and processing, and its also significantly lighter and probably has a better battery life too. I would absolutely make a new iPad Pro my main "laptop" if it were not for the fact that its running iOS, which restricts the capability of stuff I can do on it, unlike my laptop that runs full desktop apps and Windows. Now also for comparison sake, here is the
benchmark of my main desktop and most powerful computer I own; a 2012 Mac Pro 5,1 with dual 6-core 3.33GHz Xeon X5680s, 28GB RAM, and a RX580. The iPad Pro destroys it in single core score, and the multi-core isn't all that far off.
With all of the above being taking into consideration, by the time Apple launches ARM CPU-based Macs in 2020, I expect the A14X to be on par with or even exceed my Mac Pro in terms of processing power, which is absolutely insane to me. Don't forget, these CPUs are being put into extremely small devices like the iPhone and iPad, not larger devices like the MacBook, iMac, Mac Mini, or Mac Pro, where these CPUs would have more thermal headroom and larger batteries, allowing Apple to make even more powerful versions of their A-series CPUs to take advantage of these larger devices. We saw this with the PowerBooks, PowerMacs, and iMacs from the PPC-era, using the same CPUs in both their desktops and their laptops, with the desktop versions offering higher clock speeds or dual CPUs. With how small these ARM CPUs are and how little heat they give off and power they use, Apple could easily stick two CPUs into their laptops and desktops, offering even more processing power. Now, I know that Geekbench isn't the end-all, be-all way to tell how powerful a certain computer or device is, but its pretty damn close given that it runs fairly normal tasks for these CPUs to carry out.
So I am quite excited to see ARM-based Macs, given that they can finally offer something new and exciting compared to the constant groan that Intel CPUs have become as of lately. While Apple may not be the same company they were back in 2005 for the PPC to Intel transition, I feel like without being restricted by hot and power hungry Intel CPUs, Apple can make some radical and unique design choices much like they did back in the PPC days instead of continuing with the same boring designs every year. I'm actually planning to hold onto my current laptop as long as I can until ARM-based Macs come out since once they do, Intel-Macs will likely be quickly plunged into obsolete territory, so getting one now wouldn't exactly be a smart choice.