Hey guys!
I just wanted to know if scaling down the screen resolution has any impact on the battery life. All of you who have scaled it down, is there any significant improvement in the battery life?
Sent from my LG-D855 using xda premium
There is an battery improvement but some Apps look horrible with This solution. I am back to 1440p and give a f**k about these 1 or 2 hours.
Der CaRl said:
There is an battery improvement but some Apps look horrible with This solution. I am back to 1440p and give a f**k about these 1 or 2 hours.
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Is that 1-2 hours of SOT, or just usage?
This would all depend on the way you use your phone.
A. If you're a heavy user, (games & movies n stuff) then lower resolutions would benifit tons.
B. If you're a light user, (texts & emails n stuff) then the higher resolutions are very efficent.
There is a common misconception going around about this screen requiring alot of power.
The screen isn't what is draining the device so bad, it's the gpu powering the immense amount of pixels that is causing the power drain.
Now taking that into consideration, there is 3 things to keep in mind.
1. You're still lighting up 3,686,400 mini lightbulbs (aka pixels) no matter what resolution you run at.
2. Lower resolutions = less power draw from the gpu, mostly when the gpu is under higher loads.
3. The gpu doesn't require much power while under lighter loads
So to sum it up
Higher resolution + Very graphic intensive = Heavy power draw from the gpu
Lower resolution + Very graphic intensive = Medium power draw from the gpu
Higher resolution + Not graphic intensive = Low power draw from the gpu
Lower resolution + Not graphic intensive = Low power draw from the gpu
As you can see, under lighter loads 2560x1440 is extremly efficent and preferable by myself, but under heavier loads (games and stuff) 1920x1080 is far more power efficent on the gpu (if your games will even run), once we get a custom kernel for our phones a slight gpu underclock would be MUCH more effective than lowering your resolution.
All this talk of lowering the resolution to save power is rubbish, it doesn't work. Its just a placebo.
By far the biggest cause of drain on the battery from the screen is the backlight, not the resolution. Changing it to a lower resolution doesnt actually change anything, the GPU isnt even trying even at 1440P, it never scales past the second step (330MHz) in 2D. The only thing stopping the GPU from being able to display 4K or even 8K is the bandwidth, not the GPUs power. 2D is effortless for the GPU.
If you reduce the resolution to 1080P the GPU has to rescale that image to 1440P in order to fill the screen (the actual screen resolution is fixed and cannot be changed). All this does is add an extra layer of processing and costs you processor cycles.
In games this changes somewhat, but the effect isnt as big as some like to think. The GPU is still memory bandwidth limited in 3D even at 1440P, not power limited. To prove the point in Basemark X the G3 scores higher than the N5 and almost as high as the M8 and S5, despite having double the pixels.
I bought it for the resolution.. I'm not turning it down.. Otherwise I would have just bought an S5 Or a freeking iphone lmfao
---------- Post added at 08:32 PM ---------- Previous post was at 08:30 PM ----------
At 47% now 10hr usage 2hr SOT.... ESTIMATED 8HRS LEFT..
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It sems there is a fps cap on our Desire HDs. In games and benchmarks, the limit seems to be around 59-60 fps. Is there any possible way to remove this? And yes, I know our screens are 60hz, but still...
Under ROM development as I understand it is something to do with kernels...
Sounds like v-sync is on. If that is the case and if it were turned off to allow more then 60fps you would get screen tearing and screen tearing looks terrible.
V-sync is a good thing, it keeps frames that are drawn in sync with the refresh rate of the screen.
There is no reason to turn it off, maybe the menus and stuff will be faster but definitely not smoother.
That's not always the case, my friend Generally i'm more interested to see what type of framerates this baby can hit!
Well that's true, in that case it will have to be turned off. In WinMo it was a matter of changing a registry entry but on Android probably more complicated. Like you mentioned, a modified kernel most probably.
I would actually be interested aswell in seeing what this beast can do to.
Hmmm...me ad my friend were experimemting around with our phones, I have a Desire Hd and he has a Galaxy S....generally Galaxy S is more powerful in 3D graphics. However, even though he built a custom gingerbread rom, my cpu was faster (quadrant rated mine 6600 at 998mhz vs his at 1024 mhz giving 5400). Another interesting find was that overclocking q hummingbird decreases gpu performance to speed up cpu operations. I assume the gpu is underclocked to provide more power to the cpu. However, at extremes (1.6ghz) it seems his gpu also overclocks, thus crashing the system. I was thinking if it were possible to overclock the gpu on a desire hd, or at least reroute power from the cpu to the gpu via software codes...
Note: contains theoretical assumptions
I have went back and forth with the 3 different resolution settings. If I look hard I can tell a little difference. At HD it is actually a little less sharp then my LG G5. Do we have any idea of the draw backs of the highest resolution? How much less battery life. Does it affect smoothness. I'll try different setting myself but was just wondering if anybody knew already.
I'm in the process of trying out the higher resolution too. I'll report back my real world use findings.
Sent from my SM-G965U1 using Tapatalk
Does use a bit more power BUT a lot more RAM
I haven't measured battery use (and it would be hard to have exactly the same test conditions anyway), but I haven't noticed any real difference between FHD and WQHD in normal use. I also don't see a whole lot of difference in sharpness or image quality, but maybe someone with younger eyes than me will see a difference.
Testing max resolution for a few days now, no major battery life impact so far. No lag either.
I've been happy with the battery on max as well. At the end of the day, with almost 4 hours screen time, my battery was still 40% yesterday. LTE most of the day, some wifi.
The difference between 1480x720 HD+ and 2220x1080 FHD+ is around 20 minutes battery time over the course of the entire day I believe. Then with 2960x1440 WQHD+ you're probably looking at losing 40 minutes of battery throughout the day. And overall, each step up uses more RAM, which is expected.
In terms of a difference, I can't really tell the real difference between 720p and WQHD+ ... I mean, the screen is small already, it's a phone. It isn't like you're stretch the resolution over a Monitor or TV where you can clearly tell the difference.
I believe WQHD+ is just slightly sharper. The big difference is if you were to use a VR Headset since the screen would be very close to your face and magnified.. this is when I would recommend using WQHD+ ... FHD+ 1080p is fine for daily use and I doubt you would be able to have a noticeable battery drain.
It's truely a topic of Battery Life & Lower Temps / vs. / "Visual Fidelity" & Higher Temps. I believe using WQHD+ over the course of a year would have a considerable but not horrible wear on the battery lifespan however, considering hardware isn't impervious to aging.
I've played with both resolutions but haven't noticed a difference neither.
The settings allow you to lower the resolution. I lowered the resolution to 2340 x 1080 and I don't really notice anything different.... Would this increase battery life? If so, how much?
It will definitely increase battery life.
How much will it increase depends on your usage and your apps installed. It should at max give you 10% increase.
id3alistic said:
Would this increase battery life? If so, how much?
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It is well and widely known that lowering resolution won't give you increased battery life. At all
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
id3alistic said:
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
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I think the misconception is lowering the screen resolution vs a device that maxes out at a lower resolution. Maybe it makes a difference for OLEDs...but for LCD screens, all if the pixels are still illuminated, so there's not much difference there.
AarSyl said:
I think the misconception is lowering the screen resolution vs a device that maxes out at a lower resolution. Maybe it makes a difference for OLEDs...but for LCD screens, all if the pixels are still illuminated, so there's not much difference there.
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Sounds convincing and makes sense. I wonder why they'd allow it on this device though?
20degrees said:
Sounds convincing and makes sense. I wonder why they'd allow it on this device though?
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Because Samsung's can do it.
Nothing but hype for the misinformed and ill-advised.
[Dopey voice]"Bruh...look what my phone can do to save battery life. Can yours?" [/Dopey voice]
Using lower resolutions use less power bc they use less gpu computational power. Youre not saving anything really from the screen itself. Think of it this way does your computer/laptop use more power running resource intensive applications or running idle?
id3alistic said:
Ah thanks. I come from an xperia z3 so been using FHD screens only. I was interested in the XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved a lot more battery vs the XZ1 at 1080p.
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As one said here it's from misinformed people.
id3alistic said:
XZ1 compact back then and one of the key points from reviewers is that the lower screen resolution(720p) saved.
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Not that the resolution that saved power. If Sony could put their 3840x2160 resolution display into 4.3" size of XZ1 compact it still would run longer on battery than any 6.5" sized phone from similar battery even with 720p display. Because it's sheer size of screen that saves battery, not the resolution. 4.3" vs 6.5" is hefty difference. One needs more light to make 6.5" display emit light than to make 4.3" one hence one need more power.
Think about it this way, if resolution would matter then XZ Premium and XZ2 Premium would drain their batteries in a matter of minutes with 3840x2160 res displays. Right? But they work almost as long as say Galaxy S9 Plus or Note 8.
---------- Post added at 07:58 PM ---------- Previous post was at 07:52 PM ----------
Nirrik said:
Think of it this way does your computer/laptop use more power running resource intensive applications or running idle?
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It not works like that. When your phone renders picture in 720p or 1080p it doesn't do it sitting idle. It still consumes power when rendering picture 60 times a sec. And its GPU still runs at 200MHz, maybe it needs like 230 or 250MHz for rendering picture in 1440p but is 250MHz vs 200 MHz a huge difference? I doubt it
It's not like 1440 picture rendering needs full GPU power but 720p or 1080p can be powered by idle GPU. Never was, never will. Ask devs in http://forum.xda-developers.com/android/software-hacking if in doubt
In reality ability to pick your resolution for battery life is a gimmick and doesn't really do anything.
There were no proofs that phones live longer from same charge when it's resolution lowered. Maybe it works for constant gaming, like playing games in 720p on a 1440p screen will bump battery life. But in other cases no
Taking only power consumption from the display alone, there is no different between HD, FHQ, QHD. The different is that if a game or any apps(or even system app itselfs) runs at HD, it will need less graphic computational power than running at QHD (once again, its not about the drainage from the display, its from GPU).
romeokk said:
The different is that if a game or any apps(or even system app itselfs) runs at HD, it will need less graphic computational power than running at QHD (once again, its not about the drainage from the display, its from GPU).
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in reality, it's bull****. learn how GPU works. Try to ask Google devs if you don't know. They do habitate here, at XDA
It's not like it renders something and then goes to sleep turning cores off as CPU does. Instead GPU renders frame 60 times a sec and uses 203MHz either your resolution is 720p or 1080p. It can't lower frequency to 100MHz magically because it's not designed that way. So it consumes as much power working at 203MHz either rendering 720p frames or rendering 1080p frames.
Hence no battery economy achieved
Billy Madison said:
in reality, it's bull****. learn how GPU works. Try to ask Google devs if you don't know. They do habitate here, at XDA
It's not like it renders something and then goes to sleep turning cores off as CPU does. Instead GPU renders frame 60 times a sec and uses 203MHz either your resolution is 720p or 1080p. It can't lower frequency to 100MHz magically because it's not designed that way. So it consumes as much power working at 203MHz either rendering 720p frames or rendering 1080p frames.
Hence no battery economy achieved
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See this:
https://www.google.co.th/url?sa=t&s...FjADegQIBRAB&usg=AOvVaw3qEXVbk4h0XmHcDhhRUR1P
Does the Samsung Galaxy Note10+ (Snapdragon) throttle the CPU to save battery life or manage heat? If so, is there some way to modify that?
Of course there would be a way of doing it, but first root must be achieved
i believe so i keep it on high performance mode at all times
I've only seen this happen if you have either of the power saving moves enabled.
I ran a test with the device set to high performance mode, and there is definitely some modest throttling after the 2 minute mark. Root can't come soon enough.
Results: https://m.imgur.com/a/ySI0LBH
Here are the results of a more intensive test: https://imgur.com/a/3t4o6f3
nwitkin said:
I ran a test with the device set to high performance mode, and there is definitely some modest throttling after the 2 minute mark. Root can't come soon enough.
Results: https://m.imgur.com/a/ySI0LBH
Here are the results of a more intensive test: https://imgur.com/a/3t4o6f3
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So you want it to overheat instead of slow down? Damn thing says 174 degrees.
Can someone, who has the Exynos version, do the CPU Throttling Test and share the picture, please?
The only rootless setting you can set for it is the moderate power save that fix it to 70%
You need root otherwise.
Every CPU have Throttling. This is about temp. increasing. Have one test in GSMARENA.COM
Flagships vs Gaming phones. After 1 hour hard gaming casual flagships decreasing CPU power on 60, 70 % to prevent overheating. In Gamer phones like ROG or Black Shark decreasing is only around 90%. This is because they have active cooling systems.
propov said:
Every CPU have Throttling. This is about temp. increasing. Have one test in GSMARENA.COM
Flagships vs Gaming phones. After 1 hour hard gaming casual flagships decreasing CPU power on 60, 70 % to prevent overheating. In Gamer phones like ROG or Black Shark decreasing is only around 90%. This is because they have active cooling systems.
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I agree. But not only gaming devices. For example, Sony Xperia XZ Premium doesn't throttle that much.
I just wanted to see if there is a difference in Throttle on Exynos and Snapdragon.
If someone could do a CPU Throttling Test on Exynos, I would be very happy!
Exynos is horrendous. Just look at gips. Im starting to believe more and more there's something wrong with my device.
Hi there! I have a Galaxy Tab S4, as you can imagine. I use it as my gaming device. The only game I play is Rues Of Survival. And well, Among us, but I don't even take it into consideration as a demanding game.
The tablet is not rooted but I debloated it with adb as far as I could. Android 10 on board.
Probably this crappy game became so poorly optimized that the performance degraded over time.
Now I am at a point where it's pretty unplayable even if I lower the resolution.
Let's see what I have tried so far.
I have checked the usage of CPU, GPU, temp and FPS with the game launcher plug-in. I have an average of 60 FPS with an average CPU usage of 8% and an average GPU usage of 80%. The problem occurs during crowded scenes. The FPS drop to 30, making the whole thing sutter really hard, the CPU usage stays the same and the GPU usage drops to 60%. WHY THE HECK?!
I have tried a couple of different resolutions (the game does not specifically states to how many pixels correspond each d*mn option) with close to no improvements. The graphics got really ugly, obviously.
Should I try to root and disable DVFS? Should I root and lower the resolution of the whole tablet to a normal fullHD with terminal? Should I stop complaining? Should I quit playing? Should I get a new tablet?
It seems pretty absurd that a game that I was able to play on my Galaxy S6, now got so demanding. Or that a 500 euros tablet aged so badly in two years.
Are those 2 free GB of ram out of 4 not enough to handle the game?
I can play it quite flawlessly on my OnePlus Nord. But this is NOT an option. The hardware specs of the two devices should be comparable. What mostly changes are the screen resolution (lower on the OP Nord) and the ram size (double on the OP Nord).
I doesn't try that game, but I played others (pubg (highers settings), stardew valley, this war of mine... etc), and I have not had problems at all. I'm stock. Have you try game booster?