Hi does anyone know of a cpu benchmark list that i can look up to see which cpu is faster than which etc. Something like this http://www.cpubenchmark.net/ but not this http://www.androidbenchmark.net/
For cpu's not devices. Either that or something with all devices listed. Thanks
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Does Android support automatically scaling CPU speed on devices to conserve power when it isn't needed?
For example, mobile CPUs in laptops and netbooks do this automatically (as long as enabled), scaling a CPU's clock in order to conserve battery life.
This seems like a no-brainer for a mobile OS, yet I don't believe this is actually implemented, so I'm looking for input on the topic.
Comments?
I'm rather surprised--no comments on this topic?
SetCPU on the market for Rooted android devices configures overclocking and scaling.
Shidell said:
Does Android support automatically scaling CPU speed on devices to conserve power when it isn't needed?
For example, mobile CPUs in laptops and netbooks do this automatically (as long as enabled), scaling a CPU's clock in order to conserve battery life.
This seems like a no-brainer for a mobile OS, yet I don't believe this is actually implemented, so I'm looking for input on the topic.
Comments?
Click to expand...
Click to collapse
By default android's kernel use ondemand cpu governor. It does automatic scaling.
You can check/change it through SetCPU
In playing around with overclocking the Epic, I created this spreadsheet:
https://spreadsheets.google.com/ccc?key=0Ajd2hyK6pVbidDRhQ0VWOEVlN1VaMW9QSl9rcXExOHc&hl=en
I do not know if sharing the spreadsheet will allow you to temporarily edit the values to play with it or if you will need to make your own copy to play...
The formulas were gathered from S5PC110_EVT1_UM10.pdf which describes the SOC in our Epics.
It allows you to enter in the APLL m,p,s and the MPLL m,p,s and the Dividers on the second sheet and it will display the clock speeds that will be provided to the various components. On third sheet it will actually generate the code to be put into clock.c to test out the values.
One of the most interesting things that I noticed is that the combination of MPLL, MFCDiv, G3DDiv and G2DDiv are ONLY used when the CPU speed is changing to make sure that the A2M speed does not jump too much for the graphics components to continue working before the A2M DIV can be updated. A2M DIV is always kept at 200, depending on the speed, the graphics clock can drop to 166 or so when the CPU is changing speed (could lead to a stutter, I would think).
Something else that I noticed in there is the 2D graphics chip is mentioned as being capable of 250Mhz, while the other two graphics components are only 200Mhz.
Each of the Graphics components can independently choose their clock from one of four sources (currently it uses two A2M and MPLL), it can also use EPLL and VPLL, between those four clocks we may be able to find a group of combinations that will allow us to overclock parts of the graphics components individually and hopefully by small enough increments it does not fail (my first few attempts lead to needing to use odin to restore my epic).
One thing to note is APLL can generate 30MHz to 1GHz (so if I read this correctly we are using it above its capabilities to overclock), MPLL can generate 50Mhz-2Ghz, EPLL can generate 10Mhz - 600 Mhz, VPLL can generate 10Mhz - 600Mhz.
Just looking to generate some new discussion and innovation for our Epics... I am in no way an expert, just learning and sharing what I found out...
Geoff
1st!
10 char
What are you making here?
Sent from my Epic 4G using XDA Premium app
Hello, I'm new on this forum then I'm sorry if i post in a bad section for my questions... But I think I should post here.
I've got several questions:
- Is there really no risk about undervolting CPU, I asked me about this because no one forum tell risk but compagny thaty produces phones don't set the minimal voltage required for each frequencies.
- Is there an app to force CPU usage at 100% to test undervolt options.
Example: I undervolt 2265MHz with -50mV, I launch app, click on 100% uage then it use at 100% my CPU, if it crash undervolt is to high. If it don't crash undervolt is good, maybe continue tu undervolt.
- Is there an automatic app to undervolt ?
Example: It decrease 1mV by 1mV with always the same frequencie of CPU and 100% CPU usage then when phone crash it restore the last value of voltage, then it do it with another frequency etc etc ...
- Which voltage do you use ? And are there voltages the same for all nexus 5 or they will change depending of each processor.
To give me an opinion about what to use
- If I found a minimum voltage, will it be the same for all kernel ?
Example: I'm on Kernel A, my min for 300MHz is 725mV, I switch to kernel B, Will it work with 725mV for 300MHz??
More generally it depend only of the processor or also of the kernel, governor, I/O scheduler ??
I Think it's all maybe other questions will come
I Thank you for all your constructive response. Don't hesitate to ask me to develop certain question and tell me mistakes .
Theres an undervolting thread. Should be linked in the "Sticky roll-up thread" which you can get to via my signature
Okay, thank you
Okay, I will copy/paste my message
Thak you for the information.
I have some questions regarding the temperature range on my new OPPO Find X2 Neo.
Been searching for info but nothing. Have no idea what a smartphone or tablet CPU or GPU should be for at:
1. idle
2. web browsing ( lite work)
3. heavy gaming ( PUBG, 60fps, HD graphics, 2400x1080p)
I know it depends on the chip itself as different SoC have different rattings but some general numbers are fine. I did try to use Device info HW app but no reading on this
If you want to share, please answer all 3 loads ( if you know)
thanks for your time,
silvagi
Processor Temperature Results for Tens of SoCs -- How Hot is Your Chip?
TestBird has shared with us interesting data of various SoC's heat performance. This was obtained after systematic steps, so hop on over to know more!
www.xda-developers.com
thanks alot for that, according to this article from 2015, idle is 30C and max is 60C.
Do you have more sources of information as the rest of the number are on a link thats no longer working.
NO. GIYF ...
It exist several apps that you can run on an Android device to show you CPU temperature :
How To Show CPU Temperature in Android Status bar
Well, as we all know, Android is always known for its massive app ecosystem. Just take a brief look at the Google Play Store, you will find apps for every
techviral.net
TBH ive tried for days but cant find anything. Anyone else wana share, is very simple info but somehow no info.strange...
i have those app but nothing tell me what the temp ranges are for my Soc ie cpu and gpu, i want know what the max temp is for my soc so i dont cook it
As a safety feature, phones and tablets are designed to shut down in extreme temperatures, AFAIK.
nstall both apk but antutu doesn't see the 3d bench and always ask to download it, therefore there is no test button, but only down load but that brings you to the market with missing antutu
Why try to run ATuTu 3D Bench?
The issue with it is that it doesn’t actually judge a device based on its overall performance and experience, it just runs theoretical tests on individual components of the SoCs or some other individual part of the whole device. OK, these are not always wrong, they do suggest the capabilities of a CPU or GPU up to a certain extent but are wrong interpretations for the combined system’s performance and experience, IMO.
still you have't been useffull after all these sspeech