Share your Undervolt settings & battery life

[scoopdreams]

Hi everyone,

With the release of DooMLoRD's kernel, we can now undervolt our Xperia Zs! Would like to start compiling results so we can know how far our S4s can be pushed.

Current Settings
- KA2.2 + DooMKernel v2
- Stable for 24hrs, Max clock @ 1.51GHz, Antutu stability tested
- Using System Tuner Pro
===========================
M/GHz - mV
384 - 800 (-50)
432 - 800 (-75)
486 - 800 (-75)
540 - 800 (-100)
594 - 800 (-100)
648 - 825 (-100)
702 - 825 (-100)
756 - 875 (-100)
810 - 875 (-100)
864 - 900 (-100)
918 - 900 (-100)
972 - 925 (-100)
1.02 - 925 (-100)
1.08 - 975 (-100)
1.13 - 975 (-100)
1.18 - 1000 (-100)
1.24 - 1000 (-100)
1.29 - 1000 (-125)
1.35 - 1000 (-125)
1.40 - 1000 (-137.5)
1.45 - 1000 (-137.5)
1.51 - 1000 (-150)

Battery Life
5.3 hours screen on time, 27hours total
No Stamina Mode

 

[scoopdreams]

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

 

[scoopdreams]

Reserved for future use - e.g best undervolt settings.

 

[Haldi4803]

Because i didnt have much time And had bad results on my x10i i just took a look at cpuspy and undervolted only These frequencys that were heavy used.

Till now i have:
384 - 800
1242 - 950
1512 - 1050

 

[scoopdreams]

Because i didnt have much time And had bad results on my x10i i just took a look at cpuspy and undervolted only These frequencys that were heavy used.

Till now i have:
384 - 800
1242 - 950
1512 - 1050

That's a good idea - any stability issues?

------------------------------------------
Sony Xperia Z C6603 Purple | KA Revolution 2.2

 

[Mr.Dadulka]

There is actually not much to go lower - more or less set according to your suggestion - first steps at 800 mA.
Also stable without any issue. Seems I can recommend it to others. I cannot evaluate the battery as I run it for a short time and had some hidden wakelock by Google but seems to be a little bit better than stock setting.

 

[grievous2004]

Thank you for the settings! I've applied them and had no freezes or reboots in 5 hours.
Battery life seems really improved (95% after 5 hours with 30 minutes screen on) undervolting and using the app greenify (my phone sleeps like a baby!). I'll test deeper uv in the next days

 

[ssj_jaypee]

Thank you for the settings! I've applied them and had no freezes or reboots in 5 hours.
Battery life seems really improved (95% after 5 hours with 30 minutes screen on) undervolting and using the app greenify (my phone sleeps like a baby!). I'll test deeper uv in the next days

wow thats impressive!

 

[scoopdreams]

Just ran 16 hours with new settings adjustments thanks to haidil. Totally stable. 4.8 hours of screen time, 1 hour of voice calls, 9% battery left. Simply incredible results.

M/GHz - mV
384 - 800 (-50)
432 - 800 (-75)
486 - 800 (-75)
540 - 800 (-100)
594 - 800 (-100)
648 - 825 (-100)
702 - 825 (-100)
756 - 875 (-100)
810 - 875 (-100)
864 - 900 (-100)
918 - 900 (-100)
972 - 900 (-125)**
1.02 - 900 (-125)**
1.08 - 950 (-125)
1.13 - 950 (-125)
1.18 - 950 (-125)**
1.24 - 950 (-125)**
1.29 - 1000 (-125)
1.35 - 1000 (-125)
1.40 - 1000 (-137.5)
1.45 - 1000 (-137.5)
1.51 - 1000 (-150)

** changes from first settings set

Gonna try and lower the 1.29 to 1.51 spectrum tomorrow after charging.

------------------------------------------
Sony Xperia Z C6603 Purple | KA Revolution 2.2

 

[Carphedon]

 

[BoneMo]

Voltages

Just tested,, Voltage Control and SetCPU apps and it is not possible for me to set voltages....what is wrong ?

PS: incredicontrol is solution and OP values work

 

[Haldi4803]

Jup, incredicontrol works fine.

Because i didnt have much time And had bad results on my x10i i just took a look at cpuspy and undervolted only These frequencys that were heavy used.

Till now i have:
384 - 800
1242 - 950
1512 - 1050

Btw, added 1350 - 975

It did work fine on 950 at first .... 5minutes Antutu stress test np... but after i quit the test and went back to home screen i got a reboot ^^

 

[Devries]

Sent from my L36h using xda premium

 

[scoopdreams]

Disgustingly good! :thumbup:

------------------------------------------
Sony Xperia Z C6603 Purple | KA Revolution 2.2

 

[JPWOA]

Settings and any special app used please?

 

[scoopdreams]

Lowering down of the values below does not work - rebooted after taking a call.

===============
1.29 - 975 (-150)
1.35 - 975 (-150)
1.40 - 975 (-162.5)
1.45 - 975 (-162.5)
1.51 - 975(-175)

Trying these values now [UPDATE: FAILED]
===================
1.29 - 987.5 (-137.5)
1.35 - 987.5 (-137.5)
1.40 - 987.5 (-150)
1.45 - 987.5 (-150)
1.51 - 987.5 (-162.5)

EDIT: Latest values not working too, reboots - looks like we hit the wall on 1000mV for 1.51 at least. Gonna try pushing the rest down except 1.51.

Latest Try [Update: Success so far!]
===============
1.29 - 975 (-150)
1.35 - 975 (-150)
1.40 - 987.5 (-150)
1.45 - 987.5 (-150)
1.51 - 1000 (-150)

EDIT: been on the latest settings for about 6 hours with intensive use... AND NO PROBLEMS. Looks like the margin of UV is about -150 mV...

 

[Haldi4803]

Trying 1836mhz @1200mV.... the Problem there is the Phone Already Throttles Down the 3 other Cores to 1512 when the battery hits 27°C xD Lucky it's water proof!

Edit: Crap 1200 doesn't work! made 4 Antutu benches with CoolTool overlay and Trepn profiler logging no PRoblem! But doing solely Antutu it crashes! had to raise it to 1225mV

@BoneMo with 20°C WaterTemperature, nope.

 

[BoneMo]

Trying 1836mhz @1200mV.... the Problem there is the Phone Already Throttles Down the 3 other Cores to 1512 when the battery hits 27°C xD Lucky it's water proof!

wow, water cooling for phone...omg

 

[JPWOA]

Lowering down of the values below does not work - rebooted after taking a call.

===============
1.29 - 975 (-150)
1.35 - 975 (-150)
1.40 - 975 (-162.5)
1.45 - 975 (-162.5)
1.51 - 975(-175)

Trying these values now [UPDATE: FAILED]
===================
1.29 - 987.5 (-137.5)
1.35 - 987.5 (-137.5)
1.40 - 987.5 (-150)
1.45 - 987.5 (-150)
1.51 - 987.5 (-162.5)

EDIT: Latest values not working too, reboots - looks like we hit the wall on 1000mV for 1.51 at least. Gonna try pushing the rest down except 1.51.

Latest Try [Update: Success so far!]
===============
1.29 - 975 (-150)
1.35 - 975 (-150)
1.40 - 987.5 (-150)
1.45 - 987.5 (-150)
1.51 - 1000 (-150)

EDIT: been on the latest settings for about 6 hours with intensive use... AND NO PROBLEMS. Looks like the margin of UV is about -150 mV...

Hi,

How are the voltage tests going?
Can you provide your final and stable table?

Thanks

 

[JPWOA]

Is there any way to undervolt with stock rom and stock kernel?