The Apple iPad Pro Review
by Ryan Smith, Joshua Ho & Brandon Chester on January 22, 2016 8:10 AM ESTBattery Life
Battery life is important beyond any doubt. No one wants a tablet or phone that can only spend three hours away from a charger before it dies, no matter how good the device is. While such battery life might be incredible for a desktop replacement or anything else that realistically spends most of its life plugged into a charger, mobile devices are usually carried on the go and used far away from a charger for significant amounts of time. Probably the ultimate example of this is travel, where one might use a tablet to watch movies and browse the internet for a few hours over the course of a flight.
As a result, a significant portion of our reviewing efforts are devoted to determining battery life. In order to quantify battery life, there are inevitably a lot of test cases to cover. Some people might spend most of their time in an e-reader app, others might spend most of their time playing games or similarly intensive tasks on their phones. There’s no real standard for usage, so a tablet that might last a day for one person could last a week. As a result, the goal of our testing is to provide a useful relative comparison. In order to do this, we attempt to equalize for variables like display brightness by setting all displays to 200 nits for battery life testing. Due to the inability to completely eliminate the variables that come with live network testing, we also use strong network reception with high throughput on LTE to ensure that things like power amplifiers are either at a low power setting or bypassed entirely.
Our first test is the venerable web browsing test, in which we load a selection of web pages from full charge until the device shuts off from lack of battery charge. In WiFi battery life is pretty much identical to the iPad Air 2, which might be surprising given that the battery is only 41% larger. That might sound like a lot, but the display of the iPad Pro is 77% larger at the same 264 PPI pixel density, which means that there’s a pretty sizeable efficiency gap between the iPad Air 2 and iPad Pro. The improved display and SoC are likely to be the main reasons for this, as the 20nm SoC process that was used to make the A8 SoC was quite leaky due to its traditional planar transistor structure compared to the FinFET process used in the A9X.
Interestingly, for whatever reason when re-running the same test on LTE battery life is noticeably different when compared to the iPad Air 2, where LTE and WiFi battery life were relatively close. I suspect that RF power is pretty similar between the two devices, but due to efficiency improvements on the display/SoC side the difference in battery life due to additional RF power consumption is magnified.
The more interesting test result that I encountered over the course of battery life testing was our tablet video rundown test. For whatever reason, web browsing clearly lasts a decent amount longer. It's pretty unlikely that the web browser has a lower SoC load when video is basically entirely dependent upon fixed function hardware decode. The most plausible explanation here for me is that we're seeing differences that arise from panel self-refresh, which can kick in on our web browsing test while the same definitely doesn't hold for our video test, which basically requires at least 30 FPS refresh rate continuously for the entire duration of the test. Overall that this makes the iPad Pro worse for content consumption, given Apple's content creation goals, is an unexpected turn of events.
Moving on to the more SoC-bound tasks, we can start by looking at Basemark OS II, which is basically a CPU power virus that can be used to examine the upper bound for device TDP, in addition to nominal sustained CPU load. It’s evident from this test and some back of the envelope calculation that total device TDP excluding display power is roughly 5W, which is about right given the size of the device. This suggests that the A9X can be directly compared to Intel’s Core M in both performance and power, for better or for worse. Performance here is good, with relatively low throttling due to the use of a FinFET process and solid implementation of the Twister architecture.
In our GPU throttling test, the A9X has effectively made it impossible to actually use T-Rex as a throttling test as it’s essentially pegged at vsync for the entire duration of the test. The iPad Pro also lasts a similar amount of time here as on the Basemark OS II test, which suggests that this test is still reaching TDP limits for the GPU, even if it doesn't manifest in the form of reduced performance.
Charge Time
While battery life is important, any time you’re dealing with a mobile device the time it takes to charge the battery is important as well. The usual example here is travel, but simply forgetting to plug in a device overnight can show the importance of charge rate. In the case of the iPad Pro, Apple ships it with their usual 12W charger. One might be tempted to suggest that the battery would be charged in about 3.5 hours, but it’s necessary to get the data and avoid speculation on something like this. In order to test how quickly the iPad Pro charges, we measure the difference in time between first plugging in a fully discharged tablet and when the charge is complete based upon power draw at the AC adapter.
Interestingly, the iPad Pro takes a pretty significant amount of time to charge, at over a full hour longer than the iPad Air 2. While some might be okay with this, it’s definitely a sore spot for the iPad Pro as a higher voltage charger would be able to charge the device at a more acceptable rate. I’m not really sure why Apple decided to go this route, but there’s really no clear solution here unlike the case of the iPhone 6s Plus. The charger also definitely isn’t enough to ensure that you’re always charging the iPad Pro while in use either if the SoC is in overdrive/turbo states as thermally constrained power draw is already around 9-10W.
Despite the long charge time, overall the iPad Pro is quite mobile. However, it does regress somewhat relative to the iPad Air 2 due to its longer charge time, even if battery life is equivalent. Depending upon your use case though it might be difficult, if not impossible to tell the difference.
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Constructor - Tuesday, January 26, 2016 - link
It's only by default that the Pencil can also work like a finger if the app doesn't use the extra APIs so all apps immediately work with the Pencil without having to change anything. But their developers can distinguish the Pencil if they want to.VictorBd - Tuesday, January 26, 2016 - link
@Constructor "Apple doesn't "disallow" anything!" I'll allow the broader community to debate the historical veracity of your point. I've just heard countless stories of Apple's approval / rejection process for apps for years. If Apple allows anything (by not "disallowing") as you say, all the better. Would love it to be true. It's just not been what I've been seeing and reading since the inception of the app store.My point was that, in my humble opinion, I don't believe there will never be a utility in the App Store that allows users to toggle touch off and on. This is now - for some of us - a desired feature in light of the appearance of the Apple Pencil on the market. But my estimate is that it just won't happen. You can argue that Apple won't allow it - or that too few would want it. Either way. But a small group (percentage wise) of pen tablet enthusiasts have learned to love having this capability on the Windows pen based platform. My experience with everyone who learns of it and tries it is "Wow" and once you use it, it is compelling.
I'd be ecstatic to be wrong on the idea of such an ability showing up on the Pro! I'd love to see it on the iPad Pro. We can only hope. It may convince me to buy one again and not return it. Perhaps I can overlook the limitations of using a mobile OS to do real work. Nah, probably not.
Regarding Procreate - I already said it's great that they've implemented what they have. My point about a toggle is distinct from your point about what Procreate has done. But it doesn't matter.
I'm not here to convince anyone - I was just sharing my experiences and insights.
Constructor - Tuesday, January 26, 2016 - link
@Constructor "Apple doesn't "disallow" anything!" I'll allow the broader community to debate the historical veracity of your point.This is just a bunch of nonsense. Using the special Pencil APIs is not only allowed, but even desired and encouraged. It is in no way an impediment to admission of an app to the App Store. If anything, it's an advantage!
My point was that, in my humble opinion, I don't believe there will never be a utility in the App Store that allows users to toggle touch off and on.
Of course there won't be such a switch, because that would be a really bad idea.
Among the most obvious issues with it would be that if you lost your Pencil or if it broke, you would not be able to toggle such a nonsensically global option off again – the device would be bricked, effectively! The only way around that would be some clumsy, half-baked workarounds again. Blergh!
The Pencil is excellent for drawing and for a small number of other uses, but general touch ID operation is not its forte. Trying to handle the general UI with it feels strange, it is generally slower and less intuitive and actual multi-touch is of course not supported at all.
Which leads back to the original point: The implementation in Procreate is exactly how it's supposed to be done: Both finger touch and the Pencil are supported (and at the same time!), but it's individually configurable what exactly they can be used for in this particular (drawing) app. That's the way it should be, and that also provides the maximum effectivity as well: In Procreate the distinction provides the advantages of both finger and Pencil use, not forcing the user to abandon one for the other.
Examples: Two- and three-finger-taps within the drawing area are used to signal undo and redo, respectively. Zoom is also done with two fingers. But drawing can still be restricted to the Pencil alone.
A global toggle switch would only produce additional limitations and inconveniences. it would not be a positive.
VictorBd - Tuesday, January 26, 2016 - link
To each his own.Gastec - Monday, January 25, 2016 - link
Only $1000 !? Sing me up, I'm excited to give my monthly wage to Apple.Constructor - Tuesday, January 26, 2016 - link
And who's forcing you to do that every month, if at all?Quite apart from varying incomes my iPad Pro will most likely serve me for several years. If I replace if after four years like I did with my iPad 3 (whose new owner still gets further update support from Apple) the cost per year will be around $250 or $21 per month. Most people can afford that without a problem, and many are paying more for more frequently replaced smartphones, just hidden in their pseudo-"subsidized" phone bill (which is actually just a credit payment plan plus a radio service charge).
I'm not saying that everybody should definitely get an iPad Pro (that's still a matter of needs and preferences), but given its likely useful longevity most people certainly could without breaking a sweat.
xthetenth - Monday, January 25, 2016 - link
"With the right software, I can easily see the iPad Pro completely displacing traditional note-taking in light of obvious advantages that would come with OCR and digitizing notes for easy search."This is true and has been for at least a year or two with the combination of a Surface and desktop OneNote, which does OCR, search indexing and even recording (tied to the notes so you can cue up the part of a lecture from when a particular note was made). I'd sell my spleen to send my SP4 back to myself as a college freshman.
digiguy - Monday, January 25, 2016 - link
If we just consider displacing pen and paper, while the ipad pro is lighter and larger than the SP4, but hasn't desktop Onenote, there is a much more interesting device for that, that was recently presented, the Dynapad, which is much lighter than both, but with a 12 inch screen, cheaper, and has full windows. Sure it has a CPU similar to the surface 3, rather than surface pro, but at that size and weight (lighter than even the 10.8 inches surface 3) it's the ideal device for note-taking.VictorBd - Tuesday, January 26, 2016 - link
The dynaPad (just delivered last Wednesday) provides an almost unbelievable note taking experience. Yes, the machine is underpowered, but it is worth it at this time to have a full windows 10 device that is fully loaded with production software and data - and is incredibly light and thin. It truly is the first to provide a real feel of a digital clipboard all while providing a full desktop OS. The Wacom AES pen has the best feel of anything on the market. And windows utilities allow for full control of the touch HID layer so that it can be on or off while using the pen. Simply amazing and ALL IN w pen and keyboard at $650.Can't wait to see how well Samsung's TabPro S performs in this company next month. Great times for new, light, pen-based tablets with full desktop OS's!
Fidelator - Monday, January 25, 2016 - link
The article spends a hell of a lot of time comparing this to irrelevant devices, you fail to put clear that this is the direct competition to the Surface Pro 4 of the same price tag, "I don't know why Apple decided to send a disgusting charger" come on, its cheaper.Considering the review is about getting work done why not compare its productivity to its proper competition, after all, they are charging the same price for less storage.
Windows 10 on tablets has its learning curve but after that it's a joy -most of the time, there are still rough edges, updates have been fixing those- but those are tradeoffs for the unparalleled functionality. Nothing that justifies calling the Surface a "Laptop that can double as a tablet" its actually the opposite, I'm not saying this was a bad review or that this is a bad device by any means, but I believe it to be necessary to expand on iOS's so called Pro features when compared to similarly priced devices, like, once again, The Surface Pro 4 TABLET, there is a proper tablet UI mode where you won't experience problems with small targets that need a mouse while still retaining a significant amount of productivity.
Just my 2 cents, I feel like the subject was barely touched in the final words, still, great analysis as usual, keep these up.