The Qualcomm Snapdragon 835 Performance Preview
by Matt Humrick & Ryan Smith on March 22, 2017 4:30 AM EST- Posted in
- Smartphones
- Snapdragon
- Qualcomm
- Mobile
- SoCs
- Snapdragon 835
- Kryo
First Thoughts
Mobile SoCs are packed with specialized processors: CPU, GPU, high-performance DSP (compute), low-power DSP (sensor hub), modem DSP (signal processing), ISP (image processing), fixed-function blocks (video, audio), etc. And while all of these pieces contribute to the overall user experience, some of them are difficult to quantify. The CPU and GPU remain vital to device performance and battery life, so it’s still important to probe their capabilities.
Chip Sizes Accurate to Scale
Our initial testing shows that Snapdragon 835’s Kryo 280 CPU is an octa-core, big.LITTLE configuration with four semi-custom A73 “performance” cores and four semi-custom A53 “efficiency” cores. Kryo 280’s performance cores are pretty much equivalent to Kirin 960’s A73 cores in both integer and floating-point IPC, but comparing them to Snapdragon 820’s Kryo CPU shows mixed results: integer IPC improves but floating-point regresses.
In our limited system testing, the Snapdragon 835’s IPC gains outweigh its losses, providing better overall performance than the Snapdragon 820/821 phones. Unsurprisingly, the Snapdragon 835 MDP/S matched the performance of the Mate 9’s Kirin 960, which may not sound all that exciting, but considering our positive experience with the Mate 9, it’s certainly not bad either.
Qualcomm continues to push hard into VR/AR, not just with smartphones but stand-alone HMDs too. The high resolution and low latency requirements for these experiences suddenly make the GPU a bottleneck once again. The Snapdragon 835’s updated Adreno 540 GPU, through a combination of microarchitecture tweaks and a higher peak operating frequency, is another evolutionary step along the VR path, delivering a 25% peak performance boost over Snapdragon 820’s Adreno 530.
As noted earlier, all of these results came from pre-production hardware and software that’s under Qualcomm’s control, so performance could still go up or down once retail units begin shipping; however, based on these preliminary numbers and feature additions, the Snapdragon 835 looks like a solid evolutionary upgrade over the S820. The one glaring omission in this initial assessment, though, is power efficiency, which is critical to both battery life and sustained performance. The potential power savings from the move to 10nm and the CPU swap could have a larger impact on user experience than the small performance gains and new features.
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niva - Thursday, March 23, 2017 - link
You keep saying that it's not "real world" when earlier there were links provided that should be showing you that in the real world, today, multithread already matters, and having more real/virtual cores helps. This is all for the simplest and most used task for cell phones, web browsing, multi threading is quite useful. I'm fairly confident that if an Android manufacturer ran on hardware identical to the iPhone and outscored it across the board, you'll buy the iPhone anyways. Good for you but you're not helping in this discussion, just admit your apple fanboyism and bow out. Why do you even care about the SD 835?yankeeDDL - Thursday, March 23, 2017 - link
Let me be more specific then.Web browsing is a key part of mobile experience. In the Kraken, WebXPRT and JetStream the performance difference is stunning: Kraken: 2.4X faster; WebXPRT: 1.35X faster, JetStream: 2.4X faster.
Yes, the difference is not only due to HW, but also to code optimization. Still: damn!
In the GPU department: in GFXBench, the performance is on-par (when reported).
There's a noticeable advantage of the S835 in 3DMark (1.4X Overall), but in Basemark we loose again by nearly 2X.
Yes, the comparison is (a bit) apples to oranges, but one has to admit that for a brand new SoC it would make sense to expect an hands-down victory over a noticeably older phone.
BurntMyBacon - Thursday, March 23, 2017 - link
@yankeeDDL: "Still: damn!"Agreed, Apple has a massive advantage in javascript benchmarks. It is impossible to say how much (if any) of that is due to the SoC vs the software stack, but the advantage is undeniable.
It is not unexpected that the A10 would win in Basemark. The A10 is making use of a low level API (Metal) where the SD835 is using a high level API (OpenGL ES). Again, Apple's better software cohesion and better use of APIs benefits them here. Still, the difference is quite formidable and the SD835 actually looses to the Kirin 960 as well. It would seem that the Adreno 540 is not well suited to this workflow. Therefore, it is unlikely that use of Vulkan will suddenly propel them ahead, but the gap would be a lot smaller. By the time use of Vulkan becomes common place, A11(?) will be out, so it's really a moot point.
The GFXBench Car Chase ES 3.1 / Metal chart title suggests it should have an Apple data point (only user of "Metal"). It'll likely show the same thing as the basemark test given the disparate APIs, but I'm still curious (though not critical without further considerations) as to why it wasn't included.
The fact that you can't get an A10 without iOS and you can't get iOS on another companies SoC makes considerations about whether it is better than the android SoCs or not a tertiary concern and academic when compared to the overall platform experience. There are plenty of reasons not to like an iProduct. Performance isn't generally one of them.
tuxRoller - Friday, March 24, 2017 - link
If you take into account Qualcomm's optimized browser, the differences relative to the iPhone 7 change to:(% better than the sd835)
Kraken: 140 -> 106 webxprt: 35 -> -26 jetstream: 140 -> 92
I'm sure they could do more, but I'd be amazed if the remaining differences in kraken & jetsteam were mostly due to software.
Despoiler - Wednesday, March 22, 2017 - link
It's mostly the OS that Apple has superiority in. That's why they can use a dual core while Android phones are quad or octacore.grayson_carr - Saturday, March 25, 2017 - link
Isn't the A10 a quad core, or more correctly, a dual dual core big.LITTLE chip? Same as Snapdragon 820?akdj - Friday, March 31, 2017 - link
Yes, A10 is a quad-core big.LITTLE SoC, w/a 12-core GPU, I believe... as well, Apple on the 7+ added another GB of RAM = 3GB on an iOS phone, iPad 12.9" has 4GB -- but the iOS integration with the A10... as well, the last several generations of 'home brewed' ARM chips - and Apple's investments in silicon engineering from nVidia, Intel, AMD, Qualcomm, TI and others has paid dividends.That said, off Apple/AX chipsets for a second.... excellent 'first look' and factory/testing insight. That is very cool stuff!
I think, as geeks, and 'passionate' groups of faithful mobile phone OS folks amongst our population, folks who take this stuff more seriously than the Sunday sermon... we should all take a breath and remember that it's a 'chip preview'
Not an Android phone!
The issues with using the same chip on every device running Android --and every OEM 'skinning' their handset is a huge contributor to the varying performances; real world or objective bench tests. Like Windows as an OS on the desk and lap over the years, we've ALL had our 'Vista' moments. I'm an OS X/macOS user specifically because of 'vista and a curiosity about OS X in 2006 --- but again, I digress...
Qualcomm has built a chip able to be put in to every flagship other than iOS this year and 'compete' just fine. In the performance metrics all above are bickering about. But as an iPhone 7+ owner/lover (it's an excellent phone) -- my appreciation for the 835 goes well beyond its parity or near ...or exceeding metrics of CPU and GPU, they've built a gigabit LTE modem (who cares if you won't 'get that' - it's still gonna haul ass!) - incredible image processing and 'encryption/protection' with its iris scanning and biometric uses ...as well as the smaller node, the AIO model with all,parts of the 'brain' build in house --- IMHO, it's a 50-50 tie between chip engineering but I'm bias as an ambidextrous user since '07/'08 (iOS/Android) - I have always had one of each, the family is iOS and since switching everyone over, my workload has decreased 95%. It's vertical and horizontal integration and aggregation with macOS is, still to me, science fiction and for the family business... a God Send.
That said --- my S6 has an Exynos (sp?) processor, Note 4 was Qualcomm and, as I skip Android gens, my next will be a Qualcomm. I know as an iPhone 7+ owner I was delighted to learn that the model I bought has a Qualcomm modem, not the Intel;)
Special trip for you guys. Great write up and truly amazing to me ...I'm 45, born with the 8086 processor and the progress mankind has made in such a tiny package, which is high speed connected with exponentially more power than just a decade ago... in our pocket. We all need to remember between our friendly iOS/Android 'disputes' -- the special world we enjoy today specifically BECAUSE Apple and Google/Qualcomm/SnapDragons and their host of OEMs building what just a decade ago meant 110v, plugged in No mobility, significantly slower - even wired connectivity. None of the 'Millions' of free, $1, $5 & ten buck 'programs/software' then, apps, now - available on demand! Over 30 million song libraries, endless knowledge and tools, true magic is what I think the SD835 A10 Fusion and their predecessors are/were.
I'm old now, but not compared with the mountains I live in -- lucky enough to have spent the second ½ of my life quite literally watching these chips come to fruition ...I think it's the A10 when announced... it had/has over 3 billion transistors... and the SoC's the size of our fingernail!
Screw arguing. It's a competitive world and WE are the beneficiaries!
edlee - Wednesday, March 22, 2017 - link
the 835 has a 10% stronger gpu than a10, its just nuts that apple, not being a cpu designer at heart, can design a better cpu/soc that is years ahead of of what arm and qualcomm can produceBedfordTim - Wednesday, March 22, 2017 - link
There is a price/performance trade off with processors. Apple has chosen to make a much bigger processor which is why it is faster. Think Atom vs Core. One is slow but cheap and one is expensive and fast.Apple are not "years ahead". They have chosen to spend more on the processor.
Lord-Bryan - Wednesday, March 22, 2017 - link
"They have chosen to spend more on the processor"They also had 64bit arm cores 2 years before Qualcomm released theirs, And that's is why they are year's ahead in performance and power efficiency