Snapdragon 820/821 vs 835 - General Topics

So I've ended up using multiple phones that had either the 820 or 821 chipset (S7, 3T, G6), and practically all of them - despite varying battery capabilities and other hardware differences - seemed to have the same general characteristics;
- Middle of the road screen on time. For instance, back when I had a phone with an 801, I could easily get 6-8 hours of SOT using a 3000 mah battery, whereas even the 3T, with a 3400 hour battery could barely reach 6 hours.
- Relatively high or inconsistent battery standby drain. Greenify and Doze seemed needed on practically every 820/821 I used just to keep the standby drain in check.
- Phone often running very hot - especially after extended use.
Now if you're saying those are traits that phones have always had, you're more or less right. I'm not necessarily trying to argue that the 820/821 were steps back for Snapdragons or anything (although I do think the whole need for 2K screens did effect overall efficiency). In any case, my general point is, these flaws - whether they're solely with the 820/821 or longstanding, seem to be corrected with the 835.
Granted, I've only owned one phone with the 835 - the S8+ - and while I haven't noticed any great jump in speed or straight up performance with the 835, I have noticed that practically all of those slightly annoying flaws mentioned above are nowhere to be found.
With a 35000 mAh battery, 8-9 hours of SOT is easily achievable, I've left my phone off the charger overnight to find the battery still at 100%, and my phone hasn't gotten nearly as warm as any of the phones from last year.
In conclusion, in my personal testing and usage, I've found the real benefits of the 835 to be mostly noticeable when it comes to efficiency, rather than performance (which, IMO, is a very good thing), and I suppose I'm kind of surprised that this really hasn't been covered at all by any of the major Android publications I've seen.

You are right, snapdragon 835 is a major improvement, but aren't these initial judgement, 835 hasn't aged till now..lets see how it keeps up with the performance, especially Samsung s8..

Related

[Q] Battery Life - dual core vs single core

Hi,
Does anyone know if there will be any perceivable difference in battery life between the latest batch of smartphones based on single core 45nm SoCs and the new 45 nm dual core versions.
All manufacturers state state improved performance AND lower power consumption with the dual cores, but I am wondering how this will affect my day-to-day battery life. I actually read somewhere that e.g. Tegra 2 phones may drain the battery quicker instead of saving power.
I was planning to buy the Desire Z or Galaxy S, but I may also wait for their upgrades if this will mean better battery life. I am not too eager about the performance improvements as I am not a gamer and will likely not feel the benefits (I mostly browse 3G or WiFi/use GPS/occasionally may play a movie + a couple of calls a day).
I'm expecting the battery life to be a bit low seeing that they have a "lot" of things in them.... I reckon it maybe the same as current smartphones?
Apparently battery times will be better, let´s see...
what i have learned that dual cores will save energy. (well atleast tegra 2) that soc has sth like 7 different cores if i remember right, each and every one of them made for a specific purpose (audio play/ video encode/ decode/ gpu....a nd other things i dont remember) so the soc it self will use only what YOU need at that very moment, lets say ur watching a vid, so only the video decode core will work whereas other should be in standby or sth.
(imo battery life should increase cuz of this, not sure how much tho)
and excuse me if my knoweledge isnt exatcly correct on this matter
There are two train of thoughts here:
1) as the die gets smaller (65nm[1st gen snaps] to 45nm[2nd gen snaps] to 40nm [tegra2] to 28nm[3rd gen snaps], etc), the processor tends to draw less energy. So yes, most dual cores (having a smaller die) SHOULD be more energy efficient.
2) With dual core, executions get carried out a lot faster than they were on single core. As evident by the benchmark done on dual cores (+2000 and up), it'll take less time to start/process a program and UI, in theory, should be a lot faster and smoother (that is if manufacturers don't start ****ing around with a UI and make it sluggish). Being that it's faster and a lot more versatile than single core, people will tend to youtube a lot, play games a lot, and generally use a lot more multimedia applications. Being that we don't have a self-sustaining energy source that isn't radioactive, the battery will drain from excessive use.
So at the end of the day, it depends on your use. Yes, dual cores are more energy efficient than single core, but in the hands of a 15yo teenage girl with more life than paris hilton, they probably get the same battery life as any other phone out there.
Hi guys,
thanks for the comments and predictions. My prediction would be that there would be hardly any noticeable change between the single & dual core 45 nm chips (given same usage of course), similar to how there was almost no change when switching from 65nm to 45nm chips - which are more energy efficient as well.
the better energy efficiency seems to be quickly soaked up by more power hungry hardware and software. so it all boils down to whether one needs the better performance as the battery life will likely stay the same.
But this of course is only a prediction based on past observation. I hope I am wrong and I am still considering if it is worth waiting for the dual core devices to hit the market. In the meantime if anyone has had a chance to play with such a device (tablet?), any additional info will be welcome

[Q] Battery life

I am a bit concerned about the battery life of the upcoming htc. The first reviews I have read about it on german blogs speak from 12 to 15 hours battery life under medium to heavy usage. Even though, one needs to remain cautious with these numbers as the software is not finalized, I wouldn't expect these to double when final.
The Incredible S has a quite satisfying battery life according to users experience. But the Sensation has a bigger screen, higher resolution, a full load of 3D effects and almost the same battery. I fear the battery life will be insufficient in that case, even though dual core is supposed to consume a little less.
Samsung has built a slightly bigger battery on his GSII and people seem to experience a very good battery life. But Amoled doesn't drain the battery when black is displayed and the whole UI has been designed in black for this purpose. So the Sensation will probably not be able to achieve such an autonomy.
Hopefully it will still go through the day under heavy usage. Otherwise I might gonna settle for incredible s instead.
Has anyone read other numbers somewhere?
eadred said:
I am a bit concerned about the battery life of the upcoming htc. The first reviews I have read about it on german blogs speak from 12 to 15 battery life under medium to heavy usage. Even though, one needs to remain cautious with these numbers as the software is not finalized, I wouldn't expect these to double when final.
The Incredible S has a quite satisfying battery life according to users experience. But the Sensation has a bigger screen, higher resolution, a full load of 3D effects and almost the same battery. I fear the battery life will be insufficient in that case, even though dual core is supposed to consume a little less.
Samsung has built a slightly bigger battery on his GSII and people seem to experience a very good battery life. But Amoled doesn't drain the battery when black is displayed and the whole UI has been designed in black for this purpose. So the Sensation will probably not be able to achieve such an autonomy.
Hopefully it will still go through the day under heavy usage. Otherwise I might gonna settle for incredible s instead.
Has anyone read other numbers somewhere?
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This is how I see it. Multi-core cpu's theoretically are more power efficient. You spread work over both cores, if software is optimized, to allow for less "strain" on the cpu. From what I can tell they are "optimizing" their Sense UI to run on both cores which efficiently manages the amount of power is being used. This now gives you less power draw hence power is saved. The battery isn't as big as some devices, but in my honest opinion I believe you will get a little more than 12-15 but probably won't get up to double that. This is all based off of my own conclusions after reading several articles. I may be wrong and if you need to correct me feel free. =) All I will say is you probably won't have to worry about battery issues.

Differences in battery life between two identical U11.

I have two U11 (I'm going to return one, or both) and I noticed significant differences in terms of battery life between them.
Running PCMark battery life test, auto-brightness OFF, brightness MAX, one phone consistently gets 4h53 of screen on time, and the other one 5h08 (from 100% to 20% battery). That's a 5% difference and it's not negligible. Phones are the same otherwise in terms of apps installed. Problem is, the phone that has the worst battery life starts apps a TINY bit faster...
So the bottom line is, phones have significant manufacturing differences.... and I don't know which one to return.
They have same firmware and all identical? are you sure? maybe some app is configurated different or something.. or one battery its more degraded
5% is close negligible. I've got two U11 and they don't perform any differently. You aren't going to get identical numbers on two different handsets running benchmarks.
Hardware parts may be more or less efficient than each other. Radios on one device may be a few percent better. Honestly just send one back and get it done with. You also forget about coy CPU variances (no two chips are the same).
Different bin could be the reason there is a slight difference.
Ivancp said:
They have same firmware and all identical? are you sure? maybe some app is configurated different or something.. or one battery its more degraded
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Click to collapse
Hardware/ firmware / software is identical.
Galactus said:
5% is close negligible. I've got two U11 and they don't perform any differently. You aren't going to get identical numbers on two different handsets running benchmarks.
Hardware parts may be more or less efficient than each other. Radios on one device may be a few percent better. Honestly just send one back and get it done with. You also forget about coy CPU variances (no two chips are the same).
Different bin could be the reason there is a slight difference.
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Well the geekbench and 3D mark are exactly the same (like give or take 0.1%).
ppaasseeii said:
Well the geekbench and 3D mark are exactly the same (like give or take 0.1%).
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Click to collapse
Doesn't mean a battery benchmark is going to be within 0.1% the same as when you look at Youtubers who benchmark multiple of the same device and get somewhat different Antutu benchmark results.
5% is nothing to fuss over
Galactus said:
Doesn't mean a battery benchmark is going to be within 0.1% the same as when you look at Youtubers who benchmark multiple of the same device and get somewhat different Antutu benchmark results.
5% is nothing to fuss over
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Click to collapse
It's like starting with a battery at 100% vs starting at a battery at 95%. For the rest of the life of the phone. Kind of a big deal.
Anyways, I'm running another test now with a low screen brightness, in case one screen was brighter than the other one (at max brightness) and drained more battery, I'll keep y'all posted.
Try with all radios (wi-fi, gsm, bluetooth, nfc, gps) off, even in location settings (disable scanning nearby devices for improved accuracy), and force stop all installed apps before the test. That gives me about 10 to 15 % increase on AnTuTu score. Maybe log cpu load and speed while testing as well.
I agree 5% is not a big deal, but would definitely keep the longer standing
Edit: force stopping because you may have installed the same apps, but most background processes won't load until you first time run their app, so one of the two "identical" devices may actually be running less apps in background. Best for testing would be to factory reset both devices and not load anything into them nor change any settings except the backlight for test.
How do you use both phones in the same manner to expect same result? You text same person with both phones making sure time taken to perform the task is same for both? And different phones have different usage pattern hence the 5% difference..??
Besides....that's 15mins. I definitely consider that as negligible. A 20% difference would be something to concern yourself about.

Lag

I know i made some negative posts on the htc u11 but tbh i love this phone and i was just feeling annoyed by some things.. But i wanted to ask, i expected this phone to be lag free and super fast, yes it is super fast abd smooth but the thing is that it does lag with me and it is noticable. Happens a couple of times a day i think, am i the only one having lag problems? I do have the power saving option on and idk if it's what's causing the phone to lag or not but all i know is it does lag with me and it is unexpected since this phone has htc sense and snapdragon 835. Share your thoughts below
Not just lag but freeze
I'll share my thoughts : you should really stop openning these threads because actually no one believes you, we're all aware that you're here to throw up on this phone.
For who ? We don't know.
Maybe a simple Samsung fanboy who's upset because HTC made a better phone than Samsung's flagships two years in a row ?
Now stop please, it's not funny and it will not prevent people to buy the U11 if they want to.
I don't see Samsung logo on front... Soo no lag here.
Dejan Kruljac said:
I don't see Samsung logo on front... Soo no lag here.
Click to expand...
Click to collapse
Turn off the power saver. It's not needed with the Snapdragon 835 and it alters the distribution of the load between the clusters. Things that would complete swiftly and thus conserve power on the big cores gets offloaded to the little cores. The kernel isn't optimized to take advantage of the efficiency of the 835. With it being incredibly easy to get 7 hours of SoT, there is no need for the power saver. Somewhere on XDA there's a very detailed explanation as to what the power saver does and why it shouldn't be used unless your phone is about to die but it curbs both clock speeds and shuffles around the load, preferring to not use the big cores at all. It basically abolishes the efficiency of the big.LITTLE premise and often has opposite the intended effect if you're actively using the phone.
If you need optimization, you can use Boost+ to set individual high drain apps up to be run in 1080p, limit background usage, etc. This is much more effective than essentially killing the performance of the phone and gaining little, if any, additional battery life. It can have the opposite effect and in fact did so on the 10.
Think of it like this - the little cluster may take half the power per cycle than the big cluster (I don't know the exact numbers and highly doubt it's anywhere near half but it works for the example). You open an app that would have completed in a single cycle on the big cluster. That same app can take four to five cycles on the little cluster. You've just thrown efficiency out the window.
If you have a lot of background apps misbehaving and a lot of apps constantly syncing, it can be advantageous but I haven't seen any evidence of that since the Snapdragon 820. The 805 in my Nexus 6 benefited from it but my Note 5 with the Exynos 7420 and my 10 with the Snapdragon 820 suffered.
Lag?? OP must be in the wrong forum. Please go back to your Lagsung S8..
I had freezes on my previous HTC(one m7), and the reason was some crappy game I installed. After removal - no lag at all. Just try and revise your applications and remove ones you have doubts
0 lag. None, Nada, zilch. Either the person who started this post has an app or setting that is causing it or they are intentionally trying to keep people from buying it...Which seems crazy...who would care that much...?

Battery duration compared to old S5 Mini

Hello,
Since I have not yet had a precise idea about the battery life of this S10E, I would like a comparison between my current smartphone and the S10E.
If for example with my current smartphone (Galaxy S5 Mini, stock rom and battery replaced about 3 years ago) with the use I make I arrive at night when I go to sleep with about 15% of battery, in my case with S10E how much will the battery percentage be compared to the S5 mini?
Thanks a lot in advance for a reply!
I'm assuming the baterry is 2,100 mAh, the s10e has 3,100 a better processor and a better overall OS and UI.. it handles battery drain better afaik.
You should see very good improvements in battery life going with the s10e..
silkera said:
I'm assuming the baterry is 2,100 mAh, the s10e has 3,100 a better processor and a better overall OS and UI.. it handles battery drain better afaik.
You should see very good improvements in battery life going with the s10e..
Click to expand...
Click to collapse
Ok, thanks a lot for the reply!!
I would like to switch from my S5 to the S10E, but the various reviews says that S10E have a very bad battery....
Bokka80 said:
Ok, thanks a lot for the reply!!
I would like to switch from my S5 to the S10E, but the various reviews says that S10E have a very bad battery....
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In all honesty, I came from an LG G6 to the S10e (Snapdragon version), and I'm getting better battery life, even though the G6 had a larger 3300 mAh battery. You should almost certainly see a decent improvement coming from an S5.
swan3983 said:
In all honesty, I came from an LG G6 to the S10e (Snapdragon version), and I'm getting better battery life, even though the G6 had a larger 3300 mAh battery. You should almost certainly see a decent improvement coming from an S5.
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I hope, because I would like to buy an european S10E with a Exynos CPU. The battery drain problems is related to Exynos models, not to Snapdragon.
I would not compare a low priced/featured SoC (S5 mini) with a highest end Soc (S10e). A more featured SoC will always drain more power, because it has more components that must be powered. Better compare the energy efficiency of the same SoC from different smartphone manufacturers.
As far as I can say yet after a week, the power drain of the S10e is OK. This means: I expect that with more apps the power drain will raise. If the phone lasts for a day, or if i have to power it in the late evening/night, this is OK.
My last daily driver phone was a Xiaomi Note 5 which broke accidently. That thing gave me power for 2-3 day heavy usage. With an Snapdragon 636, an ernergy efficient mid-class SoC with a 4000mAh battery, the experience was superb. But with lack of many phone features like good camera, NFC, ....
Nevertheless I decided to switch to an higher end daily driver because of the features and overall better possibilies the S10e can give me. If the battery will not last for the whole day i will sell it. I also will buy a backup phone like the Xiaomi Note 7 soon for navigation and for traveling.

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