Share your Undervolt settings & battery life

[bnm15]

just wondering wt governors are you guys using

 

[langeveld024]

I have new settings so I share with all of you!

existenz V7 JB 4.3, ZombieKernel B3 with kexec.
governor: interactive
IO sched: BFQ
readahead: 1024
mp-decision: off
dynamic_hotplug: on
GPU mhz: 400
GPU governor: conservative
PVS: 3 (fast)


Voltages (Frequency = STOCK = MINE)

384000 = 850000 = 750000 (-100)
432000 = 875000 = 750000 (-125)
486000 = 875000 = 750000 (-125)
540000 = 900000 = 750000 (-150)
594000 = 900000 = 750000 (-150)
648000 = 925000 = 750000 (-175)
702000 = 925000 = 750000 (-175)
756000 = 975000 = 750000 (-225)
810000 = 975000 = 800000 (-175)
864000 = 1000000 = 800000 (-200)
918000 = 1000000 = 850000 (-150)
972000 = 1025000 = 850000 (-175)
1026000 = 1025000 = 900000 (-125)
1080000 = 1075000 = 900000 (-175)
1134000 = 1075000 = 950000 (-125)
1188000 = 1100000 = 950000 (-150)
1242000 = 1100000 = 975000 (-125)
1296000 = 1125000 = 975000 (-150)
1350000 = 1125000 = 1000000 (-125)
1404000 = 1137500 = 1037500 (-100)
1458000 = 1137500 = 1037500 (-100)
1512000 = 1150000 = 1050000 (-100)

:thumbup:

 

[TechKiel]

ROM: eXistenZ Ultra v3.5.0
Kernel: Hodor Kernel 20141127
Governor: interactive
IO Scheduler: cfq
GPU mhz: 400
PVS: 4 (fastest)

Freq = Voltage (Undervolt)
384000 = 700000 (-150)
432000 = 712000 (-162.5)
486000 = 712000 (-162.5)
540000 = 737500 (-162.5)
594000 = 737500 (-162.5)
648000 = 762500 (-162.5)
702000 = 762500 (-162.5)
756000 = 812500 (-162.5)
810000 = 812500 (-162.5)
864000 = 837500 (-162.5)
918000 = 837500 (-162.5)
972000 = 862500 (-162.5)
1026000 = 862500 (-162.5)
1080000 = 912500 (-162.5)
1134000 = 912500 (-162.5)
1188000 = 937500 (-162.5)
1242000 = 937500 (-162.5)
1296000 = 962500 (-162.5)
1350000 = 962500 (-162.5)
1404000 = 975000 (-162.5)
1458000 = 975000 (-162.5)
1512000 = 987500 (-162.5)
1624000 = 1125000 (-50)
1728000 = 1150000 (-50)

 

[xdagfg]

ROM: eXistenZ Ultra v3.5.0
Kernel: Hodor Kernel 20141127
Governor: interactive
IO Scheduler: cfq
GPU mhz: 400
PVS: 4 (fastest)

Freq = Voltage (Undervolt)
384000 = 700000 (-150)
432000 = 712000 (-162.5)
486000 = 712000 (-162.5)
540000 = 737500 (-162.5)
594000 = 737500 (-162.5)
648000 = 762500 (-162.5)
702000 = 762500 (-162.5)
756000 = 812500 (-162.5)
810000 = 812500 (-162.5)
864000 = 837500 (-162.5)
918000 = 837500 (-162.5)
972000 = 862500 (-162.5)
1026000 = 862500 (-162.5)
1080000 = 912500 (-162.5)
1134000 = 912500 (-162.5)
1188000 = 937500 (-162.5)
1242000 = 937500 (-162.5)
1296000 = 962500 (-162.5)
1350000 = 962500 (-162.5)
1404000 = 975000 (-162.5)
1458000 = 975000 (-162.5)
1512000 = 987500 (-162.5)
1624000 = 1125000 (-50)
1728000 = 1150000 (-50)

Did you ever try the kernel from existenz rom for undervolting and battery life?Is it better or about the same (except overclocking) compared to hodor?Thanks.

 

[TechKiel]

Did you ever try the kernel from existenz rom for undervolting and battery life?Is it better or about the same (except overclocking) compared to hodor?Thanks.

You cannot use the kernel that is included with eXistenZ because it is the Stock .292 Kernel.

Using the Stock .292 kernel with eXistenZ, I usually get around 2h 30mins (worst) - 3h (best).
Using Hodor Kernel with undervolt, I get around 3h (worst) - 3h 30mins (best) but for once, I managed to get 4h.

I use LTE a lot to maximize my data plan. I have Stamina Mode and Greenify+ enabled at all times though.

 

[xdagfg]

You cannot use the kernel that is included with eXistenZ because it is the Stock .292 Kernel.

Using the Stock .292 kernel with eXistenZ, I usually get around 2h 30mins (worst) - 3h (best).
Using Hodor Kernel with undervolt, I get around 3h (worst) - 3h 30mins (best) but for once, I managed to get 4h.

I use LTE a lot to maximize my data plan. I have Stamina Mode and Greenify+ enabled at all times though.

Aright thanks.Il do some underclock with the 3.5 (to get decent time)and if not ...guess i have to unlock bootlaoder and flash hodor for undervolt.

 

[TechKiel]

Aright thanks.Il do some underclock with the 3.5 (to get decent time)and if not ...guess i have to unlock bootlaoder and flash hodor for undervolt.

If you plan to unlock your bootloader, make sure to backup your TA partition using BackupTA: http://forum.xda-developers.com/showthread.php?t=2292598

Have fun experimenting!

My usual settings:

CPU Freq

Min: 384 MHz
Max: 1242 MHz

Governor: interactive
IO Scheduler: noop

 

[xdagfg]

If you plan to unlock your bootloader, make sure to backup your TA partition using BackupTA: http://forum.xda-developers.com/showthread.php?t=2292598

Have fun experimenting!

My usual settings:

CPU Freq

Min: 384 MHz
Max: 1242 MHz

Governor: interactive
IO Scheduler: noop

Yeah ill take care of it .Thanks also for your settings.

 

[afeeq]

ROM: eXistenZ Ultra v3.5.0
Kernel: Hodor Kernel 20141127
Governor: interactive
IO Scheduler: cfq
GPU mhz: 400
PVS: 4 (fastest)

Freq = Voltage (Undervolt)
384000 = 700000 (-150)
432000 = 712000 (-162.5)
486000 = 712000 (-162.5)
540000 = 737500 (-162.5)
594000 = 737500 (-162.5)
648000 = 762500 (-162.5)
702000 = 762500 (-162.5)
756000 = 812500 (-162.5)
810000 = 812500 (-162.5)
864000 = 837500 (-162.5)
918000 = 837500 (-162.5)
972000 = 862500 (-162.5)
1026000 = 862500 (-162.5)
1080000 = 912500 (-162.5)
1134000 = 912500 (-162.5)
1188000 = 937500 (-162.5)
1242000 = 937500 (-162.5)
1296000 = 962500 (-162.5)
1350000 = 962500 (-162.5)
1404000 = 975000 (-162.5)
1458000 = 975000 (-162.5)
1512000 = 987500 (-162.5)
1624000 = 1125000 (-50)
1728000 = 1150000 (-50)

how is your SOT with this setting??

 

[115dan]

how is your SOT with this setting??

These settings are not good, i get freezes and reboots. This is -200mv under stock values. The best for me is -150mv, stable and good. I get 5h 30min-6h of screen time with this configuration, without i get 5h.

 

[TechKiel]

These settings are not good, i get freezes and reboots. This is -200mv under stock values. The best for me is -150mv, stable and good. I get 5h 30min-6h of screen time with this configuration, without i get 5h.

These are the default voltages from stock. I don't see how did my settings become "-200mV under the stock values."

Posting the original voltage values here as a reference.

Original stock voltage for 4.1.2
======================
M/GHz - mV
384 - 850
432 - 875
486 - 875
540 - 900
594 - 900
648 - 925
702 - 925
756 - 975
810 - 975
864 - 1000
918 - 1000
972 - 1025
1.02 - 1025
1.08 - 1075
1.13 - 1075
1.18 - 1100
1.24 - 1100
1.29 - 1125
1.35 - 1125
1.40 - 1137.5
1.45 - 1137.5
1.51 - 1150

My current setings

ROM: eXistenZ Ultra v3.5.0
Kernel: Hodor Kernel 20141127
Governor: interactive
IO Scheduler: cfq
GPU mhz: 400
PVS: 4 (fastest)

Freq = Voltage (Undervolt)
384000 = 700000 (-150)
432000 = 712000 (-162.5)
486000 = 712000 (-162.5)
540000 = 737500 (-162.5)
594000 = 737500 (-162.5)
648000 = 762500 (-162.5)
702000 = 762500 (-162.5)
756000 = 812500 (-162.5)
810000 = 812500 (-162.5)
864000 = 837500 (-162.5)
918000 = 837500 (-162.5)
972000 = 862500 (-162.5)
1026000 = 862500 (-162.5)
1080000 = 912500 (-162.5)
1134000 = 912500 (-162.5)
1188000 = 937500 (-162.5)
1242000 = 937500 (-162.5)
1296000 = 962500 (-162.5)
1350000 = 962500 (-162.5)
1404000 = 975000 (-162.5)
1458000 = 975000 (-162.5)
1512000 = 987500 (-162.5)
1624000 = 1125000 (-50)
1728000 = 1150000 (-50)

These settings are good for me because my CPU binning is: PVS: 4 (faster)

Not all Qualcomm CPUs are made equal even if they are of the same model.

In our case, APQ8064 has 4 binnings.

PVS: 1 (slow)
PVS: 2 (nominal)
PVS: 3 (fast)
PVS: 4 (faster)


The higher you cpu binning is, the less amount of voltage it needs to run.

See this thread for reference: http://forum.xda-developers.com/nexus-4/general/poll-cpu-binning-t2052496

Use the instructions in that thread to determine your CPU binning. Undervolting your device beyond your device's binning will result to reboots due to the insufficient voltage that is being fed to the CPU.

Good luck experimenting!

---------- Post added at 09:55 PM ---------- Previous post was at 09:49 PM ----------

how is your SOT with this setting??

Like I said:

You cannot use the kernel that is included with eXistenZ because it is the Stock .292 Kernel.

Using the Stock .292 kernel with eXistenZ, I usually get around 2h 30mins (worst) - 3h (best).
Using Hodor Kernel with undervolt, I get around 3h (worst) - 3h 30mins (best) but for once, I managed to get 4h.

I use LTE a lot to maximize my data plan. I have Stamina Mode and Greenify+ enabled at all times though.

This is HEAVY use.

 

[xdagfg]

Thanks Techkiel, I got PVS 3. I might be able to get close to your settings.Maybe with -100 - 150mv.

 

[xdagfg]

My settings so far:

ROM: eXistenZ Ultra v3.5.0
Kernel: zombie 2
Governor: interactive
IO Scheduler: noop
GPU mhz: 320-400
PVS: 3 (fast)

-75mV on all frequencies.No problem so far.Going and try -100mV soon.

* -100mV also fine trying -125mV soon.
** -125mV works. -150mV antutu stability test passed twice.

 

[TechKiel]

You're testing AnTuTu Stability test with

CPU: 384-1512 @ -150mV?
Or did you underclock it?

 

[xdagfg]

You're testing AnTuTu Stability test with

CPU: 384-1512 @ -150mV?
Or did you underclock it?

No i dont think i had it underclocked.I em testing it right now with these settings.

ROM: eXistenZ Ultra v3.5.0
Kernel: zombie 2
CPU: 384-1512 @ -150mV on all freqs
Governor: interactive
IO Scheduler: noop
GPU mhz: 320-400

PVS: 3 (fast) binning

* test,passed.Highest in the green graph was 74.50 lowest was 62.50.*

 

[TechKiel]

No i dont think i had it underclocked.I em testing it right now with these settings.

ROM: eXistenZ Ultra v3.5.0
Kernel: zombie 2
CPU: 384-1512 @ -150mV on all freqs
Governor: interactive
IO Scheduler: noop
GPU mhz: 320-400

PVS: 3 (fast) binning

* test,passed.Highest in the green graph was 74.50 lowest was 62.50.*

I see.

Nice. Carry on.

 

[xdagfg]

I see.

Nice. Carry on.

so the difference 74.50 from 62.50 is ok?
SHould i go smaller steps now -162.5 mV?

 

[TechKiel]

so the difference 74.50 from 62.50 is ok?
SHould i go smaller steps now -162.5 mV?

It's your choice.

 

[xdagfg]

It's your choice.

i completed one test with -160mV.I will leave it for some days to see how it goes.

 

[jedisurfer]

Hi I have a locked bootloader, using existenz ultimate 3.5 rom is there an app or setting or build prop edit I can do to undervolt? Every app I've tried says this kernel can't undervolt.