Develop Bugs

[Q] Default Voltages

Does anyone know the default voltages for each clock step for the Xperia Play? Or perhaps the maximum voltage it normally goes to on stock settings?
Am i right in assuming that the default voltages are different for the Zeus board in the Play than the board in the Arc?

MHZ Voltage(mV)
122 900
245 900
368 900
460 950
576 1000
652 1050
768 1050
806 1100
921 1150
1024 1200
Thats all for stock, programs that overclock have their own prefered vooltage for going further.

What would you give as an advisory as to not push the Xperia Play past? I'm currently at 1275 at 1.6Ghz.

I don't overclock mine. I like my battery life and the games I play don't need it.
I've pushed it to 1.5Ghz using SetCPU, but when I put it at 2Ghz, it crashed.

What V values to use when undervolting?

Hi,
I want to undervolt my Nexus. I just have no idea what initial values to set.
Could you please suggest Volt values for each frequency? Just to start with something.
I use franco kernel.
Thanks!
Sent from my Galaxy Nexus

Thanks for your answers!
I wouldn't know what to do without all of you!
---
One good person posted his settings in another forum. I was using similar mV values for a while but a big bigger (by 50-100mV). So I lowered volts. And now it looks like this:
CPU -
1536 - 1275 mV
1420 - 1250 mV
1344 - 1200 mV
1228 - 900 mV
1036 - 875 mV
729 - 875 mV
384 - 825 mV
192 - 800mV
IVA -
266 - 900 mV
133 - 825 mV
Core -
512/384 - 775 mV
307 - 700 mV
153 - 675 mV
Click to expand...
Click to collapse
Stable. No problems so far.

Cpu Throttle

Hi there! It's been 3 days I own a beautiful GT-N7100
I immediately rooted it, installed Perseus Kernel and started playing around with some undervolt - overclock.
From what I understood from my continuos benchmarking efforts, going over 533 MHZ for the gpu is useless, as it throttles immediately, and sometimes it even kills the performance.
So, regarding the GPU, this is the setting:
160 Mhz - 825 mV ---> MIN
266 Mhz - 875 mV
350 Mhz - 950 mV
440 Mhz - 1000 mV
533 Mhz - 1025 mV ---> MAX
It looks to be stable. Now, this is the CPU:
1800 Mhz - 1250 mV ---> MAX
1704 Mhz - 1225 mV
1600 Mhz - 1150 mV
1500 Mhz - 1125 mV
1400 Mhz - 1075 mV
1300 Mhz - 1025 mV
1200 Mhz - 1000 mV
1100 Mhz - 1000 mV
1000 Mhz - 975 mV
900 Mhz- 950 mV
800 Mhz - 925 mV
700 Mhz - 900 mV
600 Mhz - 875 mV
500 Mhz - 850 mV
400 Mhz - 825 mV
300 Mhz - 800 mV
200 Mhz - 775 mV ---> MIN
You may be wondering "Ok, so what's the problem?" As the title says, the CPU has the bad (or good, as it prevents itself from frying) habit of throttling all the way down to 800 mhz whenever its temp hits 80°C
This happens extremely fast @1,8 ghz, so fast that I wasn't even able to determine for sure the temp it hit before throttling.
@ 1,7 ghz it takes a bit more, but the end result is the same when it hits exactly 80° (it doesn't go over)
@ 1,6 ghz is stable, it never goes over 75°.
It looks that every 100 mhz I have a 5 ° increase in temp. It's not good for sure, and as far as I'm concerned is too much of an increase.
Should I further undervolt the top two frequency scales?
EDIT
Tried 1,8 ghz @ 1175 and 1,7 ghz @ 1175 and still the same s... you know what.
Or better said, it's a bit different:
1,8ghz @ 1175 takes more time to go to 80° C, but it still does.
1,7 ghz @1175 stays at 75° C, but the stupid pig throttles to 1 GHZ this time...
Any ideas?

4l3xXx said:
Hi there! It's been 3 days I own a beautiful GT-N7100
I immediately rooted it, installed Perseus Kernel and started playing around with some undervolt - overclock.
From what I understood from my continuos benchmarking efforts, going over 533 MHZ for the gpu is useless, as it throttles immediately, and sometimes it even kills the performance.
So, regarding the GPU, this is the setting:
160 Mhz - 825 mV ---> MIN
266 Mhz - 875 mV
350 Mhz - 950 mV
440 Mhz - 1000 mV
533 Mhz - 1025 mV ---> MAX
It looks to be stable. Now, this is the CPU:
1800 Mhz - 1250 mV ---> MAX
1704 Mhz - 1225 mV
1600 Mhz - 1150 mV
1500 Mhz - 1125 mV
1400 Mhz - 1075 mV
1300 Mhz - 1025 mV
1200 Mhz - 1000 mV
1100 Mhz - 1000 mV
1000 Mhz - 975 mV
900 Mhz- 950 mV
800 Mhz - 925 mV
700 Mhz - 900 mV
600 Mhz - 875 mV
500 Mhz - 850 mV
400 Mhz - 825 mV
300 Mhz - 800 mV
200 Mhz - 775 mV ---> MIN
You may be wondering "Ok, so what's the problem?" As the title says, the CPU has the bad (or good, as it prevents itself from frying) habit of throttling all the way down to 800 mhz whenever its temp hits 80°C
This happens extremely fast @1,8 ghz, so fast that I wasn't even able to determine for sure the temp it hit before throttling.
@ 1,7 ghz it takes a bit more, but the end result is the same when it hits exactly 80° (it doesn't go over)
@ 1,6 ghz is stable, it never goes over 75°.
It looks that every 100 mhz I have a 5 ° increase in temp. It's not good for sure, and as far as I'm concerned is too much of an increase.
Should I further undervolt the top two frequency scales?
EDIT
Tried 1,8 ghz @ 1175 and 1,7 ghz @ 1175 and still the same s... you know what.
Or better said, it's a bit different:
1,8ghz @ 1175 takes more time to go to 80° C, but it still does.
1,7 ghz @1175 stays at 75° C, but the stupid pig throttles to 1 GHZ this time...
Any ideas?
Click to expand...
Click to collapse
80°C?
At that temperature your hands would be frying. You must have confused with computer.
this is XXXDDDAAA

UtkarshGupta said:
80°C?
At that temperature your hands would be frying. You must have confused with computer.
this is XXXDDDAAA
Click to expand...
Click to collapse
No man its common when u started benchmark at 1800mhz -1900mhz wid max mv cpu throttle to 80° and cpu sets automatically to 800mhz :lol:
Sent from my GT-N7100 using xda premium
---------- Post added at 01:11 PM ---------- Previous post was at 01:02 PM ----------
4l3xXx said:
Hi there! It's been 3 days I own a beautiful GT-N7100
I immediately rooted it, installed Perseus Kernel and started playing around with some undervolt - overclock.
From what I understood from my continuos benchmarking efforts, going over 533 MHZ for the gpu is useless, as it throttles immediately, and sometimes it even kills the performance.
So, regarding the GPU, this is the setting:
160 Mhz - 825 mV ---> MIN
266 Mhz - 875 mV
350 Mhz - 950 mV
440 Mhz - 1000 mV
533 Mhz - 1025 mV ---> MAX
It looks to be stable. Now, this is the CPU:
1800 Mhz - 1250 mV ---> MAX
1704 Mhz - 1225 mV
1600 Mhz - 1150 mV
1500 Mhz - 1125 mV
1400 Mhz - 1075 mV
1300 Mhz - 1025 mV
1200 Mhz - 1000 mV
1100 Mhz - 1000 mV
1000 Mhz - 975 mV
900 Mhz- 950 mV
800 Mhz - 925 mV
700 Mhz - 900 mV
600 Mhz - 875 mV
500 Mhz - 850 mV
400 Mhz - 825 mV
300 Mhz - 800 mV
200 Mhz - 775 mV ---> MIN
You may be wondering "Ok, so what's the problem?" As the title says, the CPU has the bad (or good, as it prevents itself from frying) habit of throttling all the way down to 800 mhz whenever its temp hits 80°C
This happens extremely fast @1,8 ghz, so fast that I wasn't even able to determine for sure the temp it hit before throttling.
@ 1,7 ghz it takes a bit more, but the end result is the same when it hits exactly 80° (it doesn't go over)
@ 1,6 ghz is stable, it never goes over 75°.
It looks that every 100 mhz I have a 5 ° increase in temp. It's not good for sure, and as far as I'm concerned is too much of an increase.
Should I further undervolt the top two frequency scales?
EDIT
Tried 1,8 ghz @ 1175 and 1,7 ghz @ 1175 and still the same s... you know what.
Or better said, it's a bit different:
1,8ghz @ 1175 takes more time to go to 80° C, but it still does.
1,7 ghz @1175 stays at 75° C, but the stupid pig throttles to 1 GHZ this time...
Any ideas?
Click to expand...
Click to collapse
Hey Mate
mine is exactly same mv for cpus and gpu....
Mine cpu didn't throttle ....
When I start benchmark at 1800mhz mine cpu goes max 75°c
And I got 19400+ Score in Anutu bench.
Sent from my GT-N7100 using xda premium

hellDr0id said:
No man its common when u started benchmark at 1800mhz -1900mhz wid max mv cpu throttle to 80° and cpu sets automatically to 800mhz :lol:
Sent from my GT-N7100 using xda premium
---------- Post added at 01:11 PM ---------- Previous post was at 01:02 PM ----------
Hey Mate
mine is exactly same mv for cpus and gpu....
Mine cpu didn't throttle ....
When I start benchmark at 1800mhz mine cpu goes max 75°c
And I got 19400+ Score in Anutu bench.
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Not all cpus are created equal.
this is XXXDDDAAA

4l3xXx said:
Hi there! It's been 3 days I own a beautiful GT-N7100
I immediately rooted it, installed Perseus Kernel and started playing around with some undervolt - overclock.
From what I understood from my continuos benchmarking efforts, going over 533 MHZ for the gpu is useless, as it throttles immediately, and sometimes it even kills the performance.
So, regarding the GPU, this is the setting:
160 Mhz - 825 mV ---> MIN
266 Mhz - 875 mV
350 Mhz - 950 mV
440 Mhz - 1000 mV
533 Mhz - 1025 mV ---> MAX
It looks to be stable. Now, this is the CPU:
1800 Mhz - 1250 mV ---> MAX
1704 Mhz - 1225 mV
1600 Mhz - 1150 mV
1500 Mhz - 1125 mV
1400 Mhz - 1075 mV
1300 Mhz - 1025 mV
1200 Mhz - 1000 mV
1100 Mhz - 1000 mV
1000 Mhz - 975 mV
900 Mhz- 950 mV
800 Mhz - 925 mV
700 Mhz - 900 mV
600 Mhz - 875 mV
500 Mhz - 850 mV
400 Mhz - 825 mV
300 Mhz - 800 mV
200 Mhz - 775 mV ---> MIN
You may be wondering "Ok, so what's the problem?" As the title says, the CPU has the bad (or good, as it prevents itself from frying) habit of throttling all the way down to 800 mhz whenever its temp hits 80°C
This happens extremely fast @1,8 ghz, so fast that I wasn't even able to determine for sure the temp it hit before throttling.
@ 1,7 ghz it takes a bit more, but the end result is the same when it hits exactly 80° (it doesn't go over)
@ 1,6 ghz is stable, it never goes over 75°.
It looks that every 100 mhz I have a 5 ° increase in temp. It's not good for sure, and as far as I'm concerned is too much of an increase.
Should I further undervolt the top two frequency scales?
EDIT
Tried 1,8 ghz @ 1175 and 1,7 ghz @ 1175 and still the same s... you know what.
Or better said, it's a bit different:
1,8ghz @ 1175 takes more time to go to 80° C, but it still does.
1,7 ghz @1175 stays at 75° C, but the stupid pig throttles to 1 GHZ this time...
Any ideas?
Click to expand...
Click to collapse
Your experience is exactly the same as mine. Even with undervolting I still hit the throttle range at 1.7 and 1.8.
I concluded that overclocking only really gave me an advantage in the benchmarks and braging rights department. If I was playing a game it was pointless as after a while I hit the throttle limit. In end I went back to 1.6 ghz, and I'm more than happy with the performance. :good:

Hi there, thank you for being interested in my situation. After playing around with the values, recovering from bootloops, freezes and instabilities, I came to a strange conclusion, which I would like to share with all of you, in case someone is living in my very same situation.
It looks like the voltage was not too high (causing the heat), it was rather too low. It looked, after some studies, that the cpu throttled not because its temp was too high (it sometimes throttled at 55°, and other times was not throttling at 80 ° ). So this is what I understood:
- Voltage was so low that it not only caused random lag spikes, both in games and in the UI as well (as I was also wondering why in the hell NFS was running worse than before), it caused the cpu to throttle itself to the highest step with enough voltage to support the demand (800 mhz, or 1 GHZ, at first). So I tried putting very low voltages on all steps, except on 1.8 ghz (I was on performance) and default voltage on the 1,2 ghz step, and it soon throttled to 1,2.
- GPU voltage is OK.
- Yesterday the CPU was going all the way up to 75 and also 80 degrees not only because it was charging, also because it was near my laptop's vent, stupid me :angel:
I know this makes no sense, but it is known that very low voltages prove to be unstable, but I couldn't think they could prove SO MUCH unstable.
The results now are these:
- 19k in Antutu
- 8k in Quadrant
- 60 fps on Basemark Taijii.
- 20 minutes of stability test, with over 170 gpu passes and 45 cpu passes, and no throttling at all (always 1.8 ghz).
I'm trying to play some NFS:MW later this afternoon, just giving the phone some time to charge, it's been a hard day for it
Any comments will clearly be appreciated. I'll come soon with my current voltages to share with you
And, by the way, I love this phone, I'm having sex with it this night

Good work, 4l3xXx :good: Will wait for your conclusions and voltages

Btw how do you know your phone was throttled?
this is XXXDDDAAA

I guess by watching frequency in stability test app - for me sometimes it drops from 1800 to some lower freq for a second. How much do you guys overclock GPU?

Here's my more performance oriented settings. Averages 19500 on Antutu, and 7400 on Quadrant Standard (Advanced version adds 1000 to score) This doesn't lag at all between screens, animations, etc. The only lag I've seen is when my apps rarely crash.
CPU Max - 1800mHz
CPU Min - 200mHz
Voltages from OP
Pegasusq governor
Sampling Rate - 15000uS
Sampling Down Factor - 1
Up Threshold - 90%
Down Differential - 10%
Frequency for Responsiveness - 600mHz
Up Threshold @ Min Freq - 60%
Frequency at Fast Down - 1400mHz
Up Threshold at Fast Down - 94%
Frequency Step - 25%
Up Threshold Differential - 5%
Frequency Step Decrease - 10%
Flexrate Enabled - 700mHz, 10000uS
CPU Up Rate - 8 samples
CPU Down Rate - 10 samples
Core Upbring Count - 1
*Default Configuration Overrides*
1 Core to Online - 300mHz
2 Cores to Offline - 200mHz
2 Cores to Online - 400mHz
3 Cores to Offline - 300mHz
3 Cores to Online - 500mHz
4 Cores to Offline - 400mHz
*Runqueue Depths*
1 Core to Online - 155
2 Cores to Offline - 155
2 Cores to Online - 250
3 Cores to Offline - 250
3 Cores to Online - 340
4 Cores to Offline - 340
CPU Online Load Bias - 2 cores
CPU Online Bias Up Threshold - 50%
CPU Online Bias Down Threshold - 30%
GPU Max - 733mHz
GPU Min - 160mHz
Up Threshold - 85%
Down Differential - 5%
Utilization Timeout - 25ms
Voltages from OP
Internal/SD Card Schedulers - SIO
Internal/SD Card Read Ahead - 2048kB
Dynamic FSync - Enabled

And battery?
this is XXXDDDAAA

UtkarshGupta said:
And battery?
this is XXXDDDAAA
Click to expand...
Click to collapse
Battery works like charm =D Do give it a try and you can always set it back to default if it doesn't work the way you want it.

ahkiongkc said:
Battery works like charm =D Do give it a try and you can always set it back to default if it doesn't work the way you want it.
Click to expand...
Click to collapse
Works like a charm... Lol what a troll.
Anyways how much Screen on time do you get?
this is XXXDDDAAA

UtkarshGupta said:
And battery?
this is XXXDDDAAA
Click to expand...
Click to collapse
UtkarshGupta said:
Works like a charm... Lol what a troll.
Anyways how much Screen on time do you get?
this is XXXDDDAAA
Click to expand...
Click to collapse
I was a heavy user and before the mod, i got only 16 hours before it goes totally flat. Now after the changes, i manage to squeeze up till 23 hours until it hit 1%. Ill try to screenshot tonight and post it up here.

ahkiongkc said:
Here's my more performance oriented settings. Averages 19500 on Antutu, and 7400 on Quadrant Standard (Advanced version adds 1000 to score) This doesn't lag at all between screens, animations, etc. The only lag I've seen is when my apps rarely crash.
CPU Max - 1800mHz
CPU Min - 200mHz
Voltages from OP
Pegasusq governor
Sampling Rate - 15000uS
Sampling Down Factor - 1
Up Threshold - 90%
Down Differential - 10%
Frequency for Responsiveness - 600mHz
Up Threshold @ Min Freq - 60%
Frequency at Fast Down - 1400mHz
Up Threshold at Fast Down - 94%
Frequency Step - 25%
Up Threshold Differential - 5%
Frequency Step Decrease - 10%
Flexrate Enabled - 700mHz, 10000uS
CPU Up Rate - 8 samples
CPU Down Rate - 10 samples
Core Upbring Count - 1
*Default Configuration Overrides*
1 Core to Online - 300mHz
2 Cores to Offline - 200mHz
2 Cores to Online - 400mHz
3 Cores to Offline - 300mHz
3 Cores to Online - 500mHz
4 Cores to Offline - 400mHz
*Runqueue Depths*
1 Core to Online - 155
2 Cores to Offline - 155
2 Cores to Online - 250
3 Cores to Offline - 250
3 Cores to Online - 340
4 Cores to Offline - 340
CPU Online Load Bias - 2 cores
CPU Online Bias Up Threshold - 50%
CPU Online Bias Down Threshold - 30%
GPU Max - 733mHz
GPU Min - 160mHz
Up Threshold - 85%
Down Differential - 5%
Utilization Timeout - 25ms
Voltages from OP
Internal/SD Card Schedulers - SIO
Internal/SD Card Read Ahead - 2048kB
Dynamic FSync - Enabled
Click to expand...
Click to collapse
Copy Cat :lol: Trolled
. . . This post was written by someone else in Verizon Note 2 section
I forgot his name
Sent from my GT-N7100 using xda premium

ahkiongkc said:
I was a heavy user and before the mod, i got only 16 hours before it goes totally flat. Now after the changes, i manage to squeeze up till 23 hours until it hit 1%. Ill try to screenshot tonight and post it up here.
Click to expand...
Click to collapse
I mean screen on.
this is XXXDDDAAA

Alright, I can tell you it was being throttled because I was running the System Tuner app. By the way, I thought I won too early. For some reason my phone still throttled, with voltage having been decreased only by 50 mV on all cpu steps and by 100 mV on all GPU steps. It also throttled on 1.6 ghz max. Stock voltages just made the process be slower. Stability test was perfect as I told you, but Nfs MW seems to be heavier than the test itself. I came to the conclusion it was time to switch from Perseus to Neak. So far so good, running at stock voltages and everything runs way smoother, the damn game as well. Battery isn't that good with stock voltages, also considering that kernel's voltages are way higher than sammy's defaults. I am trying undervolt again on this kernel, without touching the clocks, and will report back, starting with -150 mV on the gpu (the 160 mhz step is @ 950 LOL)
EDIT;
This phone is becoming extremely stupid and is starting to seriously piss me off. I can't do sh... because it throttles. Undervolted and throttlrs, downclocked and throttles, overvolted and throttles, someone please tell me what the HELL is going on before I throw it out of the window.

hmm, I saw somewhere someone mentioned that battery temperature at 36 degrees is throttling down, but I don't know. I think its worth to try and monitor battery temp also.
4l3xXx said:
Alright, I can tell you it was being throttled because I was running the System Tuner app. By the way, I thought I won too early. For some reason my phone still throttled, with voltage having been decreased only by 50 mV on all cpu steps and by 100 mV on all GPU steps. It also throttled on 1.6 ghz max. Stock voltages just made the process be slower. Stability test was perfect as I told you, but Nfs MW seems to be heavier than the test itself. I came to the conclusion it was time to switch from Perseus to Neak. So far so good, running at stock voltages and everything runs way smoother, the damn game as well. Battery isn't that good with stock voltages, also considering that kernel's voltages are way higher than sammy's defaults. I am trying undervolt again on this kernel, without touching the clocks, and will report back, starting with -150 mV on the gpu (the 160 mhz step is @ 950 LOL)
EDIT;
This phone is becoming extremely stupid and is starting to seriously piss me off. I can't do sh... because it throttles. Undervolted and throttlrs, downclocked and throttles, overvolted and throttles, someone please tell me what the HELL is going on before I throw it out of the window.
Click to expand...
Click to collapse

That could be reason, I mean, undervolted throttles because of too low voltage, stock voltage throttles because of what? CPU temp? Hell no! 60 ° the max I reached with stock voltages and stock clocks, and still throttles? There HAS to be something else going on.
I also read something about the battery here on xda, from the thread I actually took my previous voltages from. It was saying 41° was the battery temp that once reached would throttle everything. The guy also said it is a "security" protocol that's present only on Sammy ROMS.
I actually think the temp is way lower than 41°, because I can tell for sure the battery doesn't reach 41° at ALL, so your 36° info may be totally right.
Changing ROM might be an idea I guess, if the "security protocol" stuff is right. I'm eventually switching to Omega ROM, I've seen a lot of people with it.
I'm actually monitoring the battery temp right now while I play that stupid NFS game. I'll report back as soon as something happens.
Keep in mind my actual voltages are as follows (NEAK defaults)
1600 @ 1313 mV
1500 @ 1263 mV
1400 @ 1225 mV
1300 @ 1175 mV
1200 @ 1138 mV
1100 @ 1100 mV
1000 @ 1075 mV
900 @ 1050 mV
800 @ 1013 mV
700 @ 988 mV
600 @ 963 mV
500 @ 950 mV
400 @ 938 mV
300 @ 925 mV
200 @ 913 mV
And GPU
160 @ 937 mV
266 @ 962 mV
350 @ 1012 mV
440 @ 1075 mV
533 @ 1137 mV
By the way, thanks everyone for your interest and for trying to help a poor noob :highfive:
EDIT
K99's point is absolutely CORRECT. Whenever the battery reaches 35-36°C the CPU is unable to go over 800 mhz, no matter how low the CPU temp is. The CPU temp can even be 30°C no matter. Now, any idea of a good ROM NOT based on Samsung's stock with 4.2 and s pen support? Will report back and tell you if that security protocol stuff is true.
And another question. How can I backup an ENTIRE app such as that stupid NFS game to just put it back on the new ROM without having to download it again? (I have monthly limits on my connection...)

For backing up app with data, use titanium backup.
Sent from my GT-N7100 using xda premium

[Q] Weird voltage values being displayed - How do I know what they actually are?

I've always been a fan of undervolting my phones and ran into this problem with every ROM I've tested on my Note 2. The voltage values are completely out of whack, and I can't really tell what the original values are, preventing me from successfully undervolting my phone. Here are some of the values displayed by SetCPU:
200 MHz: 912500 mV
400 MHz: 937500 mV
600 MHz: 962500 mV
800 MHz: 1012500 mV
1000 MHz: 1075000 mV
1200 MHz: 1137500 mV
1400 MHz: 1200000 mV
1600 MHz: 1250000 mV
I thought they could be the regular values times 1000, but that doesn't work. For example, as soon as I move the slide on 200 MHz one step down, it changes from 912500 mV to 1500 mV. If the original number were 912.5 mV as I assumed, it should go down to a closer value like 900 mV, but it goes to 1500 mV instead. I don't know what to do here. I am using JediXP12 ROM straight out of the box with a totally clean install.
How can I find out the actual values of the voltages at the different speeds? Has anyone here had the same issue? How did you solve it?

Im guessing reflash your kernel lol

Here are mine...this is saber 17

saber kernel's voltages aren't compatible with voltage adjustment apps
the developer has made sure of that... he's got his own idea of voltage optimization... check the kernel thread for more details

ShadowVlican said:
saber kernel's voltages aren't compatible with voltage adjustment apps
the developer has made sure of that... he's got his own idea of voltage optimization... check the kernel thread for more details
Click to expand...
Click to collapse
Oh, I didn't know that. I'll check out the thread and other kernels. Thanks.

Overclock my phone but cpu speed drops

Hi everyone. I recently tried to undervolt my note 2, I use nadia kernel, SetCPU and stability test v2.7.
I lock hotplug lock to make sure 4 core are running. And adjust the min and max cpu speed to 1704mhz and above, which are exceeding original cpu max speed (1600mhz), and run stability test. I notice the cpu speed is unstable and even drop down to 800mhz and doesn't raise up to the cpu speed I set.
I wonde if:
1. During stability test, is it normal if cpu speed automatically drop to 800mhz ane doesn't raise up again?
2. Is it normal? If my phone don't crash on the test but cpu speed drop, does it mean I shouldn't over clock to that speed?
3. Is there a solutions for the cpu speed dropping? I tried to restore voltage and use the default to run overclock test but CPU speed still dropping.
4. What's the cause of CPU speed drop?
That's all my question. Thank you for spending your time reading my post. Hopefully someone can solve my problem.
Than you very much!
Sent from my GT-N7100 using XDA Free mobile app

Your cpu is overheating because to much vcore you dont need overclock in this cpu slow down... overclock is for professionals...

The most important thing after OC your phone is to UV the processor. Download trickster mode from the Play Store and swipe from the left edge of the screen and go to Specific. There you should find the voltages of the cpu which i will give to you for best performance after Oc(i score 25k+ on antut with those setups on 1920mhz)
CPU: 200 Mhz - 1800 Mhz ( Voltages over 1300 [email protected] Mhz makes a lot of heat and cpu throttles... )
1920 Mhz- 1350 mV
1800 Mhz - 1250 mV
1704 Mhz - 1225 mV
1600 Mhz - 1150 mV
1500 Mhz - 1125 mV
1400 Mhz - 1075 mV
1300 Mhz - 1025 mV
1200 Mhz - 1000 mV
1100 Mhz - 1000 mV
1000 Mhz - 975 mV
900 Mhz- 950 mV
800 Mhz - 925 mV
700 Mhz - 900 mV
600 Mhz - 875 mV
500 Mhz - 850 mV
400 Mhz - 825 mV
300 Mhz - 800 mV
200 Mhz - 775 mV
GPU: 160 Mhz - 533 Mhz ( Speeds over 533 are useless since making a lot of heat and also gpu throttles... )
160 Mhz - 825 mV
266 Mhz - 875 mV
350 Mhz - 950 mV
440 Mhz - 1000 mV
533 Mhz - 1025 mV
700 Mhz- 1100-1125(depends on the kernel cuz my phone crashes on devil with 1100 mV)
Credits go to @PROTOCHIP as i added only for 1920 Mhz and 700 for the GPU.

Pendulumxxx said:
Your cpu is overheating because to much vcore you dont need overclock in this cpu slow down... overclock is for professionals...
Click to expand...
Click to collapse
wowrlz123 said:
The most important thing after OC your phone is to UV the processor. Download trickster mode from the Play Store....
Click to expand...
Click to collapse
Thank you very much for you both!!