I was curious and wanted to hear from you guys 1. whether or not you have been undervolting this amazing device and at what rates? 2. has it helped getting better battery life?
I have been undervolting 1.18/192 and also max frequency around 700 as it regards screen off behavior
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Does anyone underclock? I only do it in certain situations. Do you see it as beneficial? Why or why not?
Sent from my Galaxy S2
EDIT: My settings are attached as a screenshot. My device is underclocked 50% of the time.
In my opinion and from personal use, I don't find underclocking to really be beneficial. I never really saw any better battery life. On the same note, I never really found overclocking and undervolting to be extremely beneficial either. It's like the gains aren't worth the time to tweak everything.
Undervolting, yes. Limiting clock speeds, and setting governer to conservative, yes. I say 1ghz is the best spot without losing much performance, and I get 2 days of battery life (sometimes) compared to the one day before... Stock kernel, you aren't going to see much of a difference because you can't undervolt...
I keep my phone at 800max 200min on conservative with a 85% up and 20% down threshold. I don't even see the phone slow down at 800 plus it saves some battery!
I force underclock when I'm in a situation where I KNOW the clock should never ramp up (Screen-off I set to 500) as a "safety measure" to prevent surprises.
I also may force underclock to 800 when running Navigation once my vehicle dock comes in - since we can't crank our charge current up.
Entropy512 said:
I force underclock when I'm in a situation where I KNOW the clock should never ramp up (Screen-off I set to 500) as a "safety measure" to prevent surprises.
I also may force underclock to 800 when running Navigation once my vehicle dock comes in - since we can't crank our charge current up.
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My screen off is set to this also (200-500, conservative). You can use Tasker to change frequencies for specific apps automatically.
I've never OC'd any of my phones before but was keen to try it on the Galaxy Europa as the 600MHz CPU seems a bit weedy at times. What settings would people recommend? Ideally I would like good on-demand performance, good battery life and no frying of the CPU
Thanks
I not guaranted for the results but you can try to raise to 710. I tryeid and its work for me on any of cyanogen roms.
I use smartassV2 with a frequencies range of 122-480 Mhz. For me a longer battery life it's more important than waiting a second! And if I need to play something hard I set max to an upper freq..
my 2 cent..
Hi there,
I have searched the forum for a suitable answer but couldn't really find one.
after experimenting with different kernels and underclocking I have always wondered what the pro's and con's are for using 100 Mhz as lowest frequency.
thanks
using cm9 latest + neak 2.0.2
eC1990ho said:
Hi there,
I have searched the forum for a suitable answer but couldn't really find one.
after experimenting with different kernels and underclocking I have always wondered what the pro's and con's are for using 100 Mhz as lowest frequency.
thanks
using cm9 latest + neak 2.0.2
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Really 100mhz is useless, it uses the same voltages as 200mhz (so uses same amount of power as 200mhz) and you get a lot less performance. Also, from what it have seen I can be unstable for quite a few people. I really can't see any pros to 100mhz. I would recommend you don't use it. So you are using the same amount of energy for less performance and less stability. Hope this helps you
will give you 10 to 30 mins of additional battery life if you configure it properly.
Try siyah kernel and follow the guides in general section
I have a question related to this topic. I know that overclocking can reduce CPU life, but what effect does underclocking? Same CPU life? Maybe it increases the battery life but reduces the CPU life due to CPU not working in the native way?
Haven't found an answer for this yet. It would be useful to know about it since replacing a battery is way more easier and cheaper than anything you could do if CPU dies.
Edit: I'm refering to general underclocking (max and min frequencies, not only the min frequency).
GNRS said:
I have a question related to this topic. I know that overclocking can reduce CPU life, but what effect does underclocking? Same CPU life? Maybe it increases the battery life but reduces the CPU life due to CPU not working in the native way?
Haven't found an answer for this yet. It would be useful to know about it since replacing a battery is way more easier and cheaper than anything you could do if CPU dies.
Edit: I'm refering to general underclocking (max and min frequencies, not only the min frequency).
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Click to collapse
underclocking wont affect the life of your cpu. the least underclock value will only be used when your mobile is almost idle or doing low intensity tasks, it will switch to higher frequency as needed by the task.
First of all, I am totally new to this forum.(I mean as an registered user)
Before that I always had the thing from the forum what I needed.
Now here is my question,
If i overclock the processor speed of my android device to a higher position, isn't it gonna take more battery power than usual?
Phone model: Xperia Live With Walkman
Boot loader: unlocked
Root Access: Rooted
Kernel: Rage 3.2
ROM: Real ICS r6
overclocking is going to drain your battery obviously.
overclocking drains more battery but gives better performance,too much over clocking makes phone heat & even hardware issues
saqib nazm said:
overclocking drains more battery but gives better performance,too much over clocking makes phone heat & even hardware issues
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My phn's original capacity is 1 Ghz
How much overclocking can keep my battery level fair and also give smoother performance without causing me any hardware issue?
Btw, Thx for the ans.:good:
Saimoon said:
My phn's original capacity is 1 Ghz
How much overclocking can keep my battery level fair and also give smoother performance without causing me any hardware issue?
Btw, Thx for the ans.:good:
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Click to collapse
Power consumption = Voltage x Voltage x cpufreq x some constant for your device. If you OC (raise the cpufreq) you will have more power consumption and more heat generation because most of the power is dissipated as heat and the heat is what damages your cpu. It is probably impossible to kill your cpu in one go, because your device should shut off when it begins to over heat (this will look like a random reboot). But you will slowly degrade the over all performance of your cpu and eventually you get to a point where you see a lot of random reboots. So if you decide to OC you probably want to also undervolt as well. This is because power consumption (and heat) scale with the square of the applied voltage. One rule of thumb is that your maximum cpufreq is actually determined by the voltage. For example, my cpu is rated to be stable at 1 GHZ and 1200 mV, so when I OC and UV, I scale the cpufreq as high as I can go, as long as the voltage is not greater than 1200 mV, for me this is 1.5 GHz.
Also remember that your cpu governor will have a big effect on your power consumption and it is probably doing a good job keeping the cpu running in the low range of the cpufreq table, so you are unlikely to see big effects of OC or UV on real life battery consumption.
every chipset is different, even though the brand and model is the same. noone can guarantee you any safe value to overclock.
Thanks Giving!
Thanks Everybody for helping me out!
I am applying 1.402 GHz :laugh:
Overclocking is not the only thing you have to think of in order to improve your phone's overall performance. The most important issue for me is choosing the right kernel and applying the right governor + I/O scheduler. From my experience with Mini (i have tried ALL available kernels and most of ROMs) I can surely say that now with my phone (ICS .587, custom ROM + kernel) overclocked to 1.5 GHz battery with minimal use (20 mins calls, 40 mins WiFi per day) lasts at least 60 hours. When I bought my phone (GB, no OC, all stock) battery was struggling to stay alive for 24 hours with the same minimal use. Conclusion: first pick the right kernel and ROM, then OC.
What is the difference between undervolting and underclocking? What does each do to battery life, performance, etc.
Also, what are the best, stable undervolting and underclocking value for the Rezound? I'm running Neo's Tron rom
gleggie said:
What is the difference between undervolting and underclocking? What does each do to battery life, performance, etc.
Also, what are the best, stable undervolting and underclocking value for the Rezound? I'm running Neo's Tron rom
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Undervolting is lowering the amount of power the processor draws at a certain frequency. Let's say, for example, a processor uses 1025mV at 1.18GHz normally. If you lower the voltage to 975mV for that frequency (using System Tuner or something similar) that's undervolting. If you lower the voltage too much the device will be unstable and reboot.
Underclocking is lowering the top speed of a processor. On our Rezound, the maximum speed of our processor is 1.5GHz stock. If you lower the maximum speed to 1.18GHz that's underclocking. Obviously lowering the maximum speed of the processor will decrease the performance of the device somewhat, depending on how much you lower it and what you're doing. Just getting on Twitter and XDA you might not notice the difference in speed, but during gaming it'll become more prevalent.
There isn't an established "best" amount to undervolt by, as each device is different. One device might be able to undervolt by 50mV with no problems, while another might not be able to handle any undervolting at all. If you're using the latest version of TRON ROM you should already be on Snuzzo's FunkyBean kernel, which has been undervolted by 50mV at every frequency.
Undervolting is also a subjective thing. Some people choose to go with 1.18GHz, while others may choose something higher than that, like 1.35GHz. It all depends on how you use your device and how you want it to perform. I suggest trying out something around 1.24GHz and seeing if it's alright with you. If it's too laggy just raise the speed bit by bit until you're satisfied with it.
I'm sorry for the long winded reply, but I wanted to make sure I covered everything.
Sent from my ADR6425LVW using XDA Premium.
SteveG12543 said:
Undervolting is lowering the amount of power the processor draws at a certain frequency. Let's say, for example, a processor uses 1025mV at 1.18GHz normally. If you lower the voltage to 975mV for that frequency (using System Tuner or something similar) that's undervolting. If you lower the voltage too much the device will be unstable and reboot.
Underclocking is lowering the top speed of a processor. On our Rezound, the maximum speed of our processor is 1.5GHz stock. If you lower the maximum speed to 1.18GHz that's underclocking. Obviously lowering the maximum speed of the processor will decrease the performance of the device somewhat, depending on how much you lower it and what you're doing. Just getting on Twitter and XDA you might not notice the difference in speed, but during gaming it'll become more prevalent.
There isn't an established "best" amount to undervolt by, as each device is different. One device might be able to undervolt by 50mV with no problems, while another might not be able to handle any undervolting at all. If you're using the latest version of TRON ROM you should already be on Snuzzo's FunkyBean kernel, which has been undervolted by 50mV at every frequency.
Undervolting is also a subjective thing. Some people choose to go with 1.18GHz, while others may choose something higher than that, like 1.35GHz. It all depends on how you use your device and how you want it to perform. I suggest trying out something around 1.24GHz and seeing if it's alright with you. If it's too laggy just raise the speed bit by bit until you're satisfied with it.
I'm sorry for the long winded reply, but I wanted to make sure I covered everything.
Sent from my ADR6425LVW using XDA Premium.
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Thanks for the thorough response!