The Samsung Galaxy Tab S2 Review
by Brandon Chester on October 15, 2015 8:00 AM ESTSystem Performance
Tablets have always been devices where performance can be pushed further than a smartphone. There's much more thermal headroom and bigger batteries to drive high performance SoCs. Both Apple and NVIDIA have SoCs that cannot feasibly be put in a smartphone due to their heat and power usage, and these chips find their way into tablets where these factors can be managed and the additional performance can be utilized by more sophisticated applications. At the same time, some vendors opt to use the same silicon in both phones and tablets. In the case of the Galaxy Tab S2, Samsung has decided to use their Exynos 5433 SoC which previously shipped in the Galaxy Note 4 Exynos.
The CPU side of Exynos 5433 is a quad core Cortex A57 cluster with a max frequency of 1.9GHz, and a quad core Cortex A53 cluster with a max frequency of 1.3GHz. The GPU is ARM's Mali-T760 MP6 GPU with a max frequency of 700MHz. On average the results should be similar to the Galaxy Note 4 Exynos, although software improvements to both the browser as well as Android itself will obviously have an impact.
As always, the first group of tests are our web browser tests to characterize JavaScript performance, followed by BaseMark OS II and PCMark to evaluate the CPU and other aspects of a device's performance.
Android, and most specifically Chrome's lackluster JavaScript performance is something we've been commenting on for a while now. On top of that, the Galaxy Tab S2 simply doesn't have Samsung's latest and greatest SoC, and these factors combined together give results that aren't very impressive when one considers how much better the iPad Air 2 performs despite being over one year old at this point.
Looking at the Javascript performance in Samsung's stock browser provides some interesting but not unexpected data. It's clear that there's a much higher degree of optimization for Samsung's SoCs in their own browser than in Chrome, which isn't surprising. However, Samsung's browser isn't without its own issues. It actually crashes in the zlib test of Google Octane, and although the incomplete score of 7354 is higher than what Chrome achieves, the fact that the JavaScript code couldn't be properly executed points to some more concerning issues than performance
The other problem with using a device's stock browser for comparisons is that Android devices shipping with Google Mobile Services also include Chrome, and in my experience users are far more likely to utilize Chrome based on their awareness of the Chrome brand than they are to use the included OEM web browser. In short, while stock browser results may give a better idea of what kind of JavaScript performance a device is technically capable of, the Chrome results are more relevant when examining the performance and experience that the average user will have.
When examining the overall score in BaseMark OS II one may think that the Tab S2 performs extremely poorly. However, when looking at the sub tests it becomes clear that the overall score is being brought down by very low storage and graphics scores. What's surprising is the large gap between the graphics resuIts on the Tab S2 and the Galaxy Note 4 Exynos which uses the same Exynos 5433 SoC. I re-ran the benchmark several times to see if there was anything strange going on but there doesn't appear to be any problem with the testing, and I'm not quite sure why there's such a large gap between the two.
Moving past storage and graphics, the Tab S2 gets fairly good scores in the web and system tests. However, it still lags very far behind the iPad Air 2, and there's really no way to excuse this when both devices cost the exact same amount.
PCMark is still an Android only benchmark so the results here will strictly be comparing to other Android tablets. Overall, the Tab S2 does well. Upon examining the sub tests it can be seen that the Tab S2 is always fairly close the top of the charts, with certain devices achieving extraordinary scores in some tests which makes the Tab S2 look comparatively slower than it would be with more devices for comparison.
Exynos 5433 is not Samsung's best silicon, and even Exynos 7420 would likely struggle to compete with an SoC designed exclusively for full sized tablets. In the end the Tab S2's performance is just not competitive with the iPad Air 2 or even the Nexus 9 which is priced at $399 and often sells for even less. If I were looking at the 8" Tab S2 I would probably consider its performance acceptable relative to the competition at that size and price, but the market segment of full sized flagship tablets costing $500 or more is a completely other story.
I think Samsung definitely needs to reconsider their process of designing tablets, and part of that has to involve using chips that befit the larger size and greater capabilities of a tablet compared to a smartphone. It's in everyone's best interest to not have one company holding an enormous performance lead in any market, and if there's any company that has the capabilities, integration, and resources to fight with Apple over the tablet performance crown I would think it would be Samsung.
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osxandwindows - Thursday, October 15, 2015 - link
@FlyBriWhat if you could get an iPad screen on an iPhone?
lilmoe - Thursday, October 15, 2015 - link
You have all the right to disagree. These are only opinions, Yours and mine. These opinions might be very different from Samsung's research and design decisions. I've simply stated a *possibility* for their alleged "compromise(s)". Who knows, Samsung probably decided to skip the 7420 because of low yield, and they prioritized their flagship smartphones over their tablets.That said, liking the iPad's LCD has nothing to do with the price difference. AMOLED is still more expensive to manufacture. I would argue that OLED is generally more appealing to consumers and more pleasing to the eyes. Samsung's AMOLED has drastically improved the past couple of years. According to my own experience, people just love the "pop"... And those who prefer color accuracy are also well served by the current generation of AMOLED.
ARM tablets are no longer the mainstream "must haves". Most people don't even use them anymore. Samsung, Apple and other manufacturers are researching the needs for specific niche consumers at this point.
For those who do, I really hardly see anyone using an ARM tablet outside of social media, browsing, watching video. Maybe a magazine here and there, but nothing else. I completely disagree that tablet users who play high-end games are any sort of majority. High end, or AAA, gaming is usually exclusive for consoles and PCs. Most tablet users play less resource intensive, casual games. Besides, there aren't even that many titles (if any) in the Play Store than can saturate the Exynos 5433, let alone Apple's A8X (most tablets sold are NOT iPad Air 2s... and game developers target lower specs for iOS). The Exynos 5433 is more than capable of running titles like Asphalt 8 and Dead Trigger just fine.
Also, tablets are used a LOT less than smartphones. Therefore, one might argue that longer battery life isn't as important as thinner, lighter profiles for current tablet consumers.
nerd1 - Thursday, October 15, 2015 - link
Check BOM of iPhones and galaxy phones. AMOLED screen are usually 3x the price of LCDs.And what can you do with that 'powerful' AP anyway? Running dumbed down mobile browser? Running crappy phone games? Playing 8K video on 2K screen?
zepi - Thursday, October 15, 2015 - link
Tablets are an odd market. People mostly seem to use them for web browsing and video viewing, where performance doesn't really matter that much. Reason is unknown. Maybe it is the matter of apps not existing for other tasks. Or maybe tablet form factor just doesn't work with anything else.I guess that mostly because of this, Android makers try to get away with putting cheap and "slow" SOC's into their tablets.
Apple hit the same issue when it was noticed that iPad sales was way slower than expected. It seems that upgrade cycles are much longer, since simple performance bumps just didn't seem to matter and there are no 24month phone-contracts like with the phones to push sales. This has obviously led to Apple's current push towards trying to transform tablet market by making iPad Air 2 & iPad Pro and putting emphasis behind the productivity use with the hopes of pushing the market towards something more than just content consumption.
MS seems to be pushing for the same thing with Surfaces, though they are coming from the desktop direction when Apple is approaching this market from mobile device direction.
Android makers... Well, as can be seen here, Samsung can only do so much with the multitasking and productivity features and Google has been quite ignorant towards pushing tablets forwards.
FlyBri - Thursday, October 15, 2015 - link
@zepi I would agree that most people use tablets for web browsing and video (probably more so for web browsing), which is why Samsung went with a 4:3 aspect ratio on the Tab S2. Since they did that, they lost their differentiating factor with the iPad. Because of this, they really needed to step it up to compete, and they pretty much failed on that front. The Tab S2 is significantly slower and gets much worse web browsing battery life than the Air 2, and the Air 2 is a year old. I have no problem with Samsung releasing the Tab S2, but it's very clear it's overpriced. For what it is and what it can do, it's a $300-350 tablet in today's market, not $500.osxandwindows - Thursday, October 15, 2015 - link
You can't really use surface touch screen for productivity, There is simply no windows productivity apps for tablet.The iPad pro is not going to fail like most people say.
The iPad pro has one advantage over the surface and that is the App Store.
zepi - Thursday, October 15, 2015 - link
It remains to be seen. Personally my guess is that both will have their supporters and both will "stay alive".osxandwindows - Thursday, October 15, 2015 - link
@zepiIts not that I don't like the concept behind the surface pro or surface book.
Its just that I don't see the use of a touch screen that can be removed.
Media consumption?, with 3 hours of battery life when removed?, I wood rather buy an iPad for that.
blackcrayon - Thursday, October 15, 2015 - link
Yeah at that point, why not have a nice laptop and a decent tablet on the side, you can even use them together for some tasks.osxandwindows - Thursday, October 15, 2015 - link
If you have a mac and an iPad pro, You will have the perfect combination.Apples continuity is pretty much like a surface use case.
Plus with lightning flash drives you will be able to save 4k video.