hey guys can i reduce the frequency of a core ?? will this destroy my phone ?
also checked my core and saw something incredible ! one core is minmum 384 and maximum 384 ! so this core is useless !! ???
Theliakos said:
hey guys can i reduce the frequency of a core ?? will this destroy my phone ?
also checked my core and saw something incredible ! one core is minmum 384 and maximum 384 ! so this core is useless !! ???
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If you have root yes, you can reduce the frequency with NoFrills for exemple.
And where did you saw min 384 max 384? :silly:
You can underclock with root any app that allow modifying CPU frequencies. To undervolt youll need custom kernel that allow such modifications.
So, i got curious and downloaded the "CPU z" application to have a look at my phones specs in detail. I found that my processor was the "4x ARM Cortex A7 @1.19Ghz". however the advertised processor is the "1.20GHz Qualcomm Snapdragon 400" now, is this just a pre-manufacturing model name and I'm just being stupid or is something fishy going on here?
Also i find it odd that the actual processor in my device is clocked at 1.19 when i in fact was under the idea that it's a 1.20 clock speed. I'm sure it wouldn't make that much difference but still seem odd?
could someone put my mind at rest and tell me that I'm just being an amateur and to go back into my android noobie cave or can someone confirm that in fact something fishy is going down.
thanks!
https://www.qualcomm.com/products/snapdragon/processors/400
Snapdragon 400 processor specs
CPU
Up to 1.7 GHz dual-core Krait 300 CPU or up to 1.6GHz quad-core ARM® Cortex™ A7 CPU
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And don't worry about the clock speed.
I hope this answers your question.
Abruzini said:
https://www.qualcomm.com/products/snapdragon/processors/400
And don't worry about the clock speed.
I hope this answers your question.
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Thanks ^_^
Hi guys !
I've been trying to add overclocking to Android One, I'm able to add another frequency (both Overclock and Underclock) but I'm able to test it, the 1391 MHz was the stablest overclock frequency I could get. Decreasing frequency lower than 590 MHz makes booting slower (I don't know why).
Check the screenshot, I'll report more news once I get things finished.
I have attached the mt_cpufreq.c just in case anyone have a kernel source and want to try the overclock.
EDIT: It seems max frequency can't be changed since it's hardcoded to 1.3 GHz, it keeps jumping to 1.3 GHz when screen is turned off, but the frequency sticks when phone is rebooted, but not on screen off.
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EDIT2: It seems that mt_ptp also controls DVFS, which is interesting. This means we have to edit two files and disable restoring frequency to its default table.
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EDIT3: I found this in mt_cpufreq.c :
Code:
static unsigned int g_max_freq_by_ptp = DVFS_F0;
Which is defined in the same file, the DVFS_F0 is :
Code:
#define DVFS_F0 (1300000) // KHz
The DVFS_F0 is 1.3 GHz, this might explain why the max frequency keeps jumping to 1.3 GHz when screen off. But this is just an assumption.
I've added mt_ptp.c just in case anyone want to checkout and help the development.
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Interesting
I had given up all hopes of low level modifications such as over clocking /underclocking/under volting and kernel level wake gestures like double tap to wake etc... This gives me something to look at. Thank you
It seems that max freq can't be set to other than 1300 MHz / 1.3 GHz.
Can anyone here using CM12.1 confirm this bug ? Since it might be because of the ROM but I'm unsure here, it can be either ROM or my custom built kernel.
BTW, 470 MHz isn't fully implemented, the kernel refuses to use it. It might be because I haven't defined it in the volt switch function.
EDIT: Another possibility, it seems on mt_ptp, the clock are either hardcoded or defined in other file. So I have to say that overclocking might be still far away to be achieved.
Why not Overcloack the GPU ??? (NOOB HERE)
Saurabh K said:
Why not Overcloack the GPU ??? (NOOB HERE)
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GPU is another thing here, it's still too hard to OC CPU itself.
Does the Android One uses MT6582 or MT6582M?(Are there more differences between them other than GPU frequency? MT6582: [email protected]; MT6582M: [email protected])
hstinscdln said:
Does the Android One uses MT6582 or MT6582M?(Are there more differences between them other than GPU frequency? MT6582: [email protected]; MT6582M: [email protected])
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MT6582 I believe. I never checked but on kernel the chip folder (/arch/arm/mach-) is mt-6582
Can it be used on a 5" screen and MT6582M?
Sent from my Lenovo A536 using XDA Free mobile app
hstinscdln said:
Can it be used on a 5" screen and MT6582M?
Sent from my Lenovo A536 using XDA Free mobile app
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Depends, does your phone kernel source exist ? If yes, then you're free to try. If not, then don't.
BTW, please don't think this is just a 'install the .c file and get overclock'. It needs many work, and such, I advise you to have at least some advanced knowledge of Linux Kernel.
F4uzan said:
It seems that max freq can't be set to other than 1300 MHz / 1.3 GHz.
Can anyone here using CM12.1 confirm this bug ? Since it might be because of the ROM but I'm unsure here, it can be either ROM or my custom built kernel.
BTW, 470 MHz isn't fully implemented, the kernel refuses to use it. It might be because I haven't defined it in the volt switch function.
EDIT: Another possibility, it seems on mt_ptp, the clock are either hardcoded or defined in other file. So I have to say that overclocking might be still far away to be achieved.
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i had overclocked sprout in almost every possible sorts i can do. you have not defined 470mhz freq table properly in the file , pm me if you want to know my experience. :good:
Wow, overclocks must drain battery though .........
Saurabh K said:
Wow, overclocks must drain battery though .........
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Not really, but yeah, it kinda drain battery more than normal 1.3 GHz frequency.
F4uzan said:
Not really, but yeah, it kinda drain battery more than normal 1.3 GHz frequency.
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How about the you underclock in order to save battery as 1.3 quad core is not that necessary for mild usage.
Saurabh K said:
How about the you underclock in order to save battery as 1.3 quad core is not that necessary for mild usage.
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200mhz is the lowest underclock i get in my experiments ,i tried 156 mhz but it didn't boots up ?
roshan77ss said:
View attachment 3269028
200mhz is the lowest underclock i get in my experiments ,i tried 156 mhz but it didn't boots up
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does the device run smoothly on such low clocks ???
Saurabh K said:
does the device run smoothly on such low clocks ???
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low clock means less processing power so it lags if i set both minimum and max frequency to 200mhz else it is fine[emoji23]
roshan77ss said:
low clock means less processing power so it lags if i set both minimum and max frequency to 200mhz else it is fine[emoji23]
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OK, so the device will run smoothly on ~550 MHz without loosing too much on performance and save battery also, ?
Saurabh K said:
OK, so the device will run smoothly on ~550 MHz without loosing too much on performance and save battery also, ?
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yup 550mhz doesn't affect performance that much
roshan77ss said:
yup 550mhz doesn't affect performance that much
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So, tell me a safe way in which I can underclock my Sparkle V (Stock 5.1)...
Using trickster mod??
Hi xda, i own a z1 and its currently running kitkat rom build number 14.4.A.0.108, rooted and unlocked bootloader
What kernel can i install that supports underclock the cpu to 1,4 ghz, because i feel that at 2,3 ghz its just an overkill. And the device heats up a lot.
Also how can i disable the touchboost feature, the cpu was at 300 mhz during idle, but when i touch the screen its jumps up to maximum frequency, how can i disable this ?
Any help will be greatly appreciated!
If u just allow z1 run in 1.4ghz, i think u need buy another phone
lavenbut said:
If u just allow z1 run in 1.4ghz, i think u need buy another phone
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well the phone is given by someone to me, so no need to buy another phone, also i really liked the build quality
i am not heavy gamer or anything like that so i think 1,4 ghz will be more than enough
Hi
I want to know how to overclock the CPU,when I use EX kernel to overclock,the hightest option is 2.2G,I saw some one overclock the CPU to 2.2G even 2.3G,but how to do this
By the way, can the GPU be overclocked?
SheJiShi said:
Hi
I want to know how to overclock the CPU,when I use EX kernel to overclock,the hightest option is 2.2G,I saw some one overclock the CPU to 2.2G even 2.3G,but how to do this
By the way, can the GPU be overclocked?
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You probably meant that little cores are on 2188 MHz and big cores 2342 MHz. That's not an overclock, these are actual stock core clock speeds.
No way to overclock. Why even do that on a smartphone and SD821?
przemcio510 said:
Why even do that on a smartphone and SD821?
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Most of the times, the answer to that question would be nothing more than: "because I can". :laugh: