Post Your Overclock/Underclock/Undervolt Results - Motorola Droid RAZR

To give everyone who wants to start over/underclocking there Razr's a head-start with some values, I think it would be best to gather some real-world data from the XDA community. You can drastically reduce your device's power consumption by undervolting, extending your battery life.
The data presented in this thread should be used as a general guideline, and will not be stable on all devices. At such a small die size (~45nm), imperfections in the semiconductor are unavoidable, and as such, each device will have a (slightly) different stability point. That being said, it's a lot easier to over/underclock properly when you have a set of known, working values on other devices (even acknowledging the fact that all CPUs have different stability points).
I personally have left my phone at stock speeds, but undervolted the CPU drastically to improve my battery life. For the technically inclined, power consumption of a CMOS circuit decreases quadratically as a function of voltage. So for the majority, halving the voltage of a CPU at the same frequency will reduce the power consumption to only one quarter of the original.
So, without further ado, here are my new set V_SEL values (as well as the stock, original ones). I manually tested the undervolted settings using the free StabilityTest application, which cycles through all clock frequencies in the table below, and ensures the CPU is stable at all frequency/voltage combinations.
Code:
Frequency | Stock | Undervolted
[MHz] | [V_SEL] | [V_SEL]
-------------------------------------
1200 | 61 | 45
1000 | 61 | 38
800 | 55 | 31
600 | 43 | 28
300 | 26 | 18***
(aside: does anyone know what units the V_SEL values are in?)
After the change, not only does the phone consume a lot less power (I can manage over 3 days on a single charge now, before it was around 2), it also gets less hot under use as well. Note that the values I got above do have some room for further adjustment, but they're very close to the minimum voltage values (the phone is very unstable when V_SEL = 40 at 1200 MHz).
*** Edit: You need to set the minimum voltage in the Calibration menu in QuickClock Advanced to set V_SEL lower than the stock value of 26 (thanks spikegibeault).
For those who are curious, you can manually set the V_SEL and clock speed values without using a tool by simply executing the following script (must be root, and should be done on every boot since the values revert to the default when the phone reboots).
Code:
echo 1 300000000 26 > /proc/overclock/mpu_opps
echo 2 600000000 28 > /proc/overclock/mpu_opps
echo 3 800000000 31 > /proc/overclock/mpu_opps
echo 4 1000000000 38 > /proc/overclock/mpu_opps
echo 5 1200000000 45 > /proc/overclock/mpu_opps
echo 0 1200000 > /proc/overclock/freq_table
echo 1 1000000 > /proc/overclock/freq_table
echo 2 800000 > /proc/overclock/freq_table
echo 3 600000 > /proc/overclock/freq_table
echo 4 300000 > /proc/overclock/freq_table
echo 1200000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
echo 300000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
Note that in the script above, I changed the minimum V_SEL to 26 so most people can just try the script after installing the kernel modules. To go lower than 26, you still need to use QuickClock Advanced to change the Calibration values. If anyone knows what value is modified in the system, please let me know so we can avoid having to use a discrete application (and thus, can simply use shell scripts to set all values).

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Thanks, I was weary of changing the vsel of my phone because I didn't want to go through the trial and error of changing over and over again. My phone is underclocked, undervolted and stable.

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How can I undervolt my Maxx? I've under and over clocked but I've never messed with voltage. I'm also running eclipse 1.3
Thanks
Sent from my DROID RAZR using XDA

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prsterero said:
How can I undervolt my Maxx? I've under and over clocked but I've never messed with voltage. I'm also running eclipse 1.3
Thanks
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
Just flash the .zip found here and install Quickclock Advanced. Mess with Vsels.

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Leviathan26 said:
Just flash the .zip found here and install Quickclock Advanced. Mess with Vsels.
Click to expand...
Click to collapse
found where? i dont see a zip on this thread and no link haha. just in case your talking about the mo_simp_1.5 zip thats already flashed with the 1300mhz overclock script. i tried undervolting but any values i change when i exit out it reverts back even if i hit save. i tried changing the values in quickclock-advanced-scripter and i tried toggling the fulledit option found in the advanced menu as well.
Edit: now it says vsel unknown and when I go to advanced - scripter the vsel values are listed as null

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prsterero said:
found where? i dont see a zip on this thread and no link haha. just in case your talking about the mo_simp_1.5 zip thats already flashed with the 1300mhz overclock script. i tried undervolting but any values i change when i exit out it reverts back even if i hit save. i tried changing the values in quickclock-advanced-scripter and i tried toggling the fulledit option found in the advanced menu as well.
Edit: now it says vsel unknown and when I go to advanced - scripter the vsel values are listed as null
Click to expand...
Click to collapse
Yeah, that is what I meant, sorry, forgot to put a link there. I'm sorry, I can't help you with that problem, I've never had it.

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prsterero said:
Edit: now it says vsel unknown and when I go to advanced - scripter the vsel values are listed as null
Click to expand...
Click to collapse
I've noticed that bug on occasion, and was always fixed when I restarted my phone... With Quickclock, once I enabled the Full Edit option, I was able to change the V_SEL values right from the Overclock menu. If you look at the overclocking scripts, try running them manually and then checking back in Quickclock Advanced to see if your changes were made. Once you have a stable and working overclock, you will probably not need Quickclock anymore (and just get an app like ROM Toolbox or a scripting app), and can just set the script to work on boot.
I added my script to the original post, so you can see how it looks (must be run as root).
As an aside, does anyone know why my phone just crashes whenever I set a V_SEL value less than 26? (It never used to before I recovered back to the pre-patch and re-applied it, not sure what else I changed...)

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I believe I successfully undervolted now with a 1300mhz over clock 300mhz is set to 18 and seems to be running fine
Edit: I ran the stress test in quickclock for 100 seconds and got 2 lag spikes and reached 91 degrees. Not sure if the lag spikes is a good result or not since this is my first experience under volting
Sent from my DROID RAZR using XDA

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1500 MHz at 63 vsel running stable, i havent messed around much. i've beeen keeping it at 1300 at 60 for daily use
also, when using 18 as a vsel for 300mhz my system crashes
i'm running eclipse rom
Edit, after changing the bare minimum under calibration to 20 and setting at 20 i'm running smooth

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spikegibeault said:
Edit, after changing the bare minimum under calibration to 20 and setting at 20 i'm running smooth
Click to expand...
Click to collapse
Thank you so much, this is what fixed it. I had to set the calibration value, reboot, and then I was able to set my V_SEL back to 18.
Does anyone know what value is modified when this is set? It would be nice to know, so we can have an initialize script and a boot-up script (so you don't need to keep a discrete application installed once your OC is fine and running).

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after a reboot since the values reset i went to change them again and everytime i do the phone freezes up and i have to do a hard shut down. how come it worked before with the same values and now it wont? nothing has changed in the system
edit: i think the problem was it reset itself to a max of 1200mhz when before it was 1300 so the value that i used before at the 1300mhz level wasnt working with the 1200, causing the phone to freeze.
edit 2: actually it just froze again haha. maybe the 1300mhz kicked back in after i did my editing or something.
edit 3: seems like i cant do any undervolting anymore because after about 5 minutes the phone freezes.

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prsterero said:
edit 3: seems like i cant do any undervolting anymore because after about 5 minutes the phone freezes.
Click to expand...
Click to collapse
What values are you using? Did you modify the appropriate parameters in the Calibration menu (assuming you're using QuickClock Advanced)? Remember, not all phones are equal, so you might have to raise the voltages I posted a little bit.
I'm still going strong on my posted settings (currently 35 hours on battery, with 40% battery left). Stock speeds but undervolted.

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ice9tech said:
What values are you using? Did you modify the appropriate parameters in the Calibration menu (assuming you're using QuickClock Advanced)? Remember, not all phones are equal, so you might have to raise the voltages I posted a little bit.
I'm still going strong on my posted settings (currently 35 hours on battery, with 40% battery left). Stock speeds but undervolted.
Click to expand...
Click to collapse
im using the same values you listed, which before was working just fine. but after that first reboot it wont work anymore. the parameters in the calibration menu are as follows: 18, 300, 1560, 1300, 300. which made me realized the stock max speed was still set to 1300 but i put it back to stock 1200 as im typing this. tried the same values again after changing the max stock speed in the calibration menu and it froze instantly after applying ^_^
edit: just out of curiosity how much have u used the phone for that kinda battery life? and screen on time?
edit 2: i just changed the values to 58, 55, 45, 38, 26 and so far no freezing. to do this as trial and error would i have to keep going down more and more till i freeze to find the lowest values possible? and would i have to do one clock speed at a time or bring them all down 1 unit then test? also, isnt the biggest one the 300mhz voltage since thats where it is most of the time with the screen off? so with it staying the same as stock value, it wouldnt make much of a difference?

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ice9tech said:
Did you modify the appropriate parameters in the Calibration menu (assuming you're using QuickClock Advanced)?
Click to expand...
Click to collapse
How are you getting quick clock adv installed, i had purchased for my og DROID, but it says not compatible with my RAZR.
Sent from my DROID RAZR using xda premium

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Ronin3178 said:
How are you getting quick clock adv installed, i had purchased for my og DROID, but it says not compatible with my RAZR.
Sent from my DROID RAZR using xda premium
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Click to collapse
I downloaded it on my computer and moved it to the downloads folder then installed from there
Sent from my DROID RAZR using XDA

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prsterero said:
I downloaded it on my computer and moved it to the downloads folder then installed from there
Sent from my DROID RAZR using XDA
Click to expand...
Click to collapse
Ok, I went around a long way and installed on my NookColor and then backed up thru TB sync'd to dropbox and my pc, unzipped the apk, shared the apk thru dropbox to my RAZR.......
Anyway, with QC Adv, anytime I try editing or using the auto-cal function, the app freezes and nothing happens. The only way I can get it to do anything is to force stop and clear data -> back to square one.
When I go into CPU Speed scale and hit the calc, this is what populates.
1200 75
1000 64
800 53
600 44
300 29
BTW, just thought of this, what is everyone using GB or ICS? I am on ICS 6.14.75XT912.Verizon (leak from early April/late March) That could be my problem too.

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Ronin3178 said:
Anyway, with QC Adv, anytime I try editing or using the auto-cal function, the app freezes and nothing happens. The only way I can get it to do anything is to force stop and clear data -> back to square one.
Click to expand...
Click to collapse
I've noticed the same behaviour, and I think it's fairly well known by most users. I wouldn't worry about it though, it's not difficult to manually overclock/undervolt your phone.
Ronin3178 said:
When I go into CPU Speed scale and hit the calc, this is what populates.
[...]
Click to expand...
Click to collapse
That's what I get as well, and note that they are higher values than even the stock ones! Why, you ask?
Remember, the purpose of QuickClock is to make overclocking easy for most users. Those values are calculated based on predetermined "guaranteed" stable values by the application developer. I would not exceed the stock values I posted on the stock page under any circumstances, unless you are very familiar with overclocking (especially since you should be able to get a decent overclock without modifying the V_SELs). By all means though, if you want to reduce the V_SEL values (and it's stable on your phone), you should - it saves quite a bit of power (hit over 2 days on my last charge).
Also, I'm on GB, but I think you should be fine doing this with ICS (the kernel module should work with both IIRC).[/QUOTE]

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ice9tech said:
I've noticed the same behaviour, and I think it's fairly well known by most users. I wouldn't worry about it though, it's not difficult to manually overclock/undervolt your phone.
Click to expand...
Click to collapse
Ok, is there a tutorial somewhere on how to do the undervolting manually? Because QCA is useless on this phone, it doesn't even load the modules for testing vsel or clockspeed on my phone. The script editor only looks like it shows speed.
Sent from my DROID RAZR using xda premium

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Ronin3178 said:
Ok, is there a tutorial somewhere on how to do the undervolting manually? Because QCA is useless on this phone, it doesn't even load the modules for testing vsel or clockspeed on my phone. The script editor only looks like it shows speed.
Sent from my DROID RAZR using xda premium
Click to expand...
Click to collapse
In quick clock go into advanced and enable full edit. Then go to over clock and edit the voltage on the right side of the screen
Sent from my DROID RAZR using XDA

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can we do this using SETCPU?