Testing Notes

Before diving into the nuts and bolts of our actual review, I wanted to stop for a moment and talk about the means and perspectives on how to best test Apple’s rather unparalleled tablet. In terms of mechanical benchmarks, the path is rather straightforward – almost frustratingly so. There are only so many decent standardized benchmarks that run on the iPad Pro, and even fewer of those that overlap with other operating systems, particularly windows. This is why, as atypical and throughput-focused as SPEC is, it remains one of the better tools for determining how the hardware compares to other devices.

However when it comes to the user experience, that’s another matter. The iPad Pro is an iPad, that is also Pro. Specifically, that it has been designed and is being specifically pitched not only as a tool for the iPad’s traditional content-consumption tasks, but also professional productivity use cases as well. Document editing, content creation, photo editing, and other tasks that while not outside of the realm of a regular iPad, aren’t really its forte either.

Since there aren’t really any other serious Arm-based tablets of the iPad Pro’s caliber on the market – Android seems to slip farther and farther behind every year – for the review of this year’s significantly redesigned model, I’m opting to approach matters from the other direction: how does it compare to traditional productivity machines. This is the market occupied by the likes of the Microsoft Surface Pro and other Windows-powered convertibles; devices that have brought the Windows experience to a tablet-like form factor. And while the overlap is by no means perfect, I do feel that these sorts of devices are the standard-bearers for productivity and professionally-oriented tablets on the whole.

So at least in my eyes, the real competition for the new iPad Pros is going to be these other pro devices, rather than a smattering of large-format Arm-based tablets. And these are the sorts of devices I’m primarily going to be looking to compare the iPad Pro against.

System Performance

There’s little doubt that Apple has crafted a great SoC with the A12X, offering an eight core CPU for the first time in an iOS device. Apple claims that the iPad Pro is more powerful than 92% of the available laptops in the market. It does this in a device that is thinner, lighter, and much more efficient than any laptop on the market, which is a testament to their chip design team.

The iPad Pro ships with up to 6 GB of LPDDR4X – 6GB in the 1TB storage SKUs, and 4GB for the rest – compared to 4 GB in the iPhone XS. This is far less than most laptops, which can offer 16-32 GB of RAM with the low-power CPUs. But iOS is certainly less RAM hungry compared to the PC, thanks to the more limited applications available, so RAM is not going to be a limiting factor in most workloads.

Ultimately, despite Apple stating the iPad is quicker than most laptops, it is generally difficult to compare across these platforms because the desktop tools we normally use don’t exist on iOS, and most iOS tools don't exist on desktop OSes. Plus the locked-down nature of the operating system means that even those that do exist generally have lower system access. But we do have some cross-platform tools available.

TabletMark 2017

TabletMark 2017 Overall

TabletMark 2017 Web//Email

TabletMark 2017 Photos/Video

First up is Bapco’s TabletMark 2017, which is their latest iteration of their cross-platform performance and battery life testing tool. The 2017 version has the Windows version written entirely using UWP, and tests two scenarios for performance. Web and Email is the first scenario, and Photo and Video Sharing is the second. Each platform uses its native APIs and tools. Scores are calibrated against the Microsoft Surface 3 tablet, with four Atom cores, and that model is scored to 1000. Systems that are twice as fast would score 2000, and so on. The benchmark is sensitive to both CPU and GPU performance, but the CPU tests are mostly single-threaded.

In this test, the iPad Pro scores below the Surface Pro and Surface Book (which was run as iGPU only) which is perhaps not indicative of the actual performance of the iPad Pro, and once again points to the issues with testing cross-platform, even with companies doing their best to provide as fair of a comparison as possible.

Speedometer 2.0

Speedometer 2.0 - OS WebView

And with that single test out of the way, we’re already into web-based testing, which is important, but doesn’t really give a great look at the underlying hardware due to the scripting engine having such a profound impact on scores.

The new A12X scores slightly higher than the iPhone in this test, but the two extra cores don’t offer a meaningful impact in performance in all scenarios. All of these results are well over the PC though, which struggles in this WebKit created benchmark. Our PC scores are done in the native browser, Edge, but even Chrome on the Surface Book 2 only scores 75.8.


WebXPRT 3 - OS WebView

The latest version of Bapco’s web browser test is WebXPRT, and it offers quite a few different workloads compared to Speedometer. The performance on the PC surpasses the iPad in this test, but once again the underlying scripting engines have a large impact on the performance differences, which is why it is difficult to use these tests as a good cross-comparison.

Kraken 1.1

Mozilla Kraken 1.1

Once again you can see the combination of Apple’s Vortex CPUs combined with their scripting engine in Safari make for a potent combination, scoring well above any of the Windows 10 devices.

System Performance Conclusion

There is little doubt the Apple A12X SoC is potent. Apple claims it is faster than 92% of laptops available on the market, and there isn’t much evidence to refute this, but there really just isn’t a good breadth of evidence at all. A12X on iOS is very fast, and the less complicated applications on iOS are not going to cause this tablet to even break a sweat. A more telling test, perhaps, will be once Adobe has ported over the full-fat version of Photoshop to the iPad, which is expected next year.

Comparing it to the PC though is difficult, since there just are not a lot of good tools available. We will look into getting a proper SPEC comparison in the future which should give us a better baseline. Ultimately comparing iOS performance to the PC is similar to comparing it to Android, and you end up mostly looking at ECMAScript performance on the web.

The SPEC results we do have now though show that the A12X is roughly on-par with the single-threaded performance of the iPhone XS, which isn’t really a surprise, but that the A12X is well ahead of other ARM based CPUs. We’ll need a bit more time to make the same sort of comparison to the PC.

Powering iPad Pro: A12X GPU Performance


View All Comments

  • tecsi@pacbell.net - Friday, February 1, 2019 - link

    There’s no comparison of storage (SSD) performance with 10.5” iPad Pro. Seems faster to me, but I would like to see real measurements.
    Also, all the charts always need to include the “replaced” product so we can better see how much of an improvement upgrading would imply. That is the principal interest of most iPad Pro Review readers.
  • calden - Saturday, April 13, 2019 - link

    First and foremost, the iPad Pro is still just a tablet and cannot replace a laptop. Even for those seeking the bare minimum, web, office and communications, I would take my Google Pixel Slate over it any day of the week. However, for music creation, photo management and light video editing work, the iPad Pro is fantastic. In fact, those who create music, it's a must have piece of equipment, for my needs it's the brain for a two of my midi keyboards.

    iOS still needs a lot of work before it can replace OSX, Windows and Linux. Some of the most important features it's lacking is; a file-system that can be accessed directly from every single app installed and a decent file-manager that can not only manage local files but remote as well, let it be a personal or work NAS, another computer on the network or server. It needs support for an external monitor at native resolution, along with extending the workspace instead of just mirroring. It needs support for a mouse, USB printer, 3D Printer, Wacom boards, etc. True multitasking as in the ability to run multiple apps in the background while using another in the foreground. For example, right now, I'm typing this comment through the Citrix app, streaming Word
  • calden - Saturday, April 13, 2019 - link

    , while downloading and uploading a 400GB file to my NAS, while compiling the new version of Blender for my new Nvidia Xavier Jetson via a remote SSH session, while streaming a video to my TV, all in the background, with zero lag, using my Samsung Tab S4. Also, everything I listed above, I can also do on this wonderful tablet. In fact, except for those wonderful music creation apps, video and photo work, the Tab S4 is the better tablet for actual office work.

    I'm connected to a 24" Dell touch monitor (resolution is fully supported), a mouse, a USB Printer, I have Citrix streaming ever Windows 10 application that need, including Photoshop. I can mount my NAS, all of my firms servers that I need access to as local folders on the file-system using simple Linux commands. I have every single scripting language that I could possibly want, PHP, Perl, Javascript, Ruby, SQL, etc. I'm running a LAMP server so I can develop web sites as well as custom apps using PHP/MySQL, HTML 5 wrapper for my S4 and Note 9. The list just goes on and one.

    All I'm saying is, the iPad Pro isn't the best tablet, there are many, many, tasks in which I could I never do on it. It's why I own multiple devices.
  • rdr2 - Sunday, April 21, 2019 - link

    how many GFlops is the A12 x capable of?
    why don’t i see phone performance measured in Tflops or Gflops but mostly transistor counts and clock speeds
  • shaonian - Wednesday, June 3, 2020 - link

    I’m more of a designer than artist, I've used a few XP-Pen drawing tablets, including Artist monitors .
    I've been looking for portable device that works well for sketching and illustration as well as media consumption and fun.
    iPad Pro combined with the pencil looks quite promising so far.

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