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BigSketchySeaBeast
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(Last edited by BigSketchySeaBeast; 24th November 2011 at 05:47 PM.)
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Default Myrt Undervolt Suggestions [Solved]

I'm running stock, unlocked 198_7 with jokers 1.4Ghz kernel with various tweaks and what not. I'm also using the Myrt Undervolt app as well...my question is how low should I undervolt it? What are safe and suggested settings running my setup and in general? And does undervolting only save battery life or are there other benefits?

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xrelic
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I would also like to know the answer to this question i only lowered mine a little bit havent tried going any lower but i am on 1.3 oc with jokers rom
 
Custodian
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(Last edited by Custodian; 14th November 2011 at 12:16 AM.)
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Hello fellow mopho owner!

Undervolting is quite trivial! Each phone is different. There is no magic number for which you can UV or OC to and not have stability issues without proper testing.

A good way to start would be to pick a frequency, UV it in increments of -25, then proceed to run stability tests. If you encounter no issues, then decrease the voltage by -25 again and repeat the stability tests. You can do this until you encounter issues. If all is stable with this frequency, then proceed to UV another one. And repeat the same stability tests.

I recommend not to UV any higher than -50. You're just begging for a system failure. -50 should easily yield a noticably increase in battery life.

The benefit of UV only yields extended battery life at the cost of some said performance in various ways.

With having said that. Next time you have a question about an specific app, post in the Q&A section of the forums.

If you would like to share an app or theme, post it here. In the "Theme/App" section of the forum.

-cheers



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BigSketchySeaBeast
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Quote:
Originally Posted by Custodian View Post
Hello fellow mopho owner!

Undervolting is quite trivial! Each phone is different. There is no magic number for which you can UV or OC to and not have stability issues without proper testing.

A good way to start would be to pick a frequency, UV it in increments of -25, then proceed to run stability tests. If you encounter no issues, then decrease the voltage by -25 again and repeat the stability tests. You can do this until you encounter issues. If all is stable with this frequency, then proceed to UV another one. And repeat the same stability tests.

I recommend not to UV any higher than -50. You're just begging for a system failure. -50 should easily yield a noticably increase in battery life.

The benefit of UV only yields extended battery life at the cost of some said performance in various ways.

With having said that. Next time you have a question about an specific app, post in the Q&A section of the forums.

If you would like to share an app or theme, post it here. In the "Theme/App" section of the forum.

-cheers



Sent from my MB855 using XDA App
This is the only forum it would let me post in...the new member restrictions are frustrating.
 
Custodian
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Lol. I felt the same way. All good
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This is the only forum it would let me post in...the new member restrictions are frustrating.


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jokersax11
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The tegra is picky and only likes booting at certain voltages. So many of the clocks could be uv'ed by up to 100. Loki manged 175 somehow... test till see causes issues but be thorough. Oh and my next kernels will require new values as im changing uv code to be more compatible with uv apps.



Quote:
Originally Posted by Custodian View Post
Hello fellow mopho owner!

Undervolting is quite trivial! Each phone is different. There is no magic number for which you can UV or OC to and not have stability issues without proper testing.

A good way to start would be to pick a frequency, UV it in increments of -25, then proceed to run stability tests. If you encounter no issues, then decrease the voltage by -25 again and repeat the stability tests. You can do this until you encounter issues. If all is stable with this frequency, then proceed to UV another one. And repeat the same stability tests.

I recommend not to UV any higher than -50. You're just begging for a system failure. -50 should easily yield a noticably increase in battery life.

The benefit of UV only yields extended battery life at the cost of some said performance in various ways.

With having said that. Next time you have a question about an specific app, post in the Q&A section of the forums.

If you would like to share an app or theme, post it here. In the "Theme/App" section of the forum.

-cheers



Sent from my MB855 using XDA App


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Lokifish Marz
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(Last edited by Lokifish Marz; 11th June 2012 at 06:09 AM.)
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1gHz and higher tend to float around -75 to -100 on average. Below 1Ghz it's anywhere between -250 and -150 on average. Attached you will find a list of all reported undervolts on the Atrix minus the ones that are the same undervolt for every clock speed. I've noticed that it's hard to fine tune the jump between the 700Mhz range and 1Ghz. Keeping the jump no greater than 100mV seems to be best.

I would kill to have profiles, under/over clocking and undervolting all in the same app and working. Maybe if enough of us get together we may be able to convince the app devs to put it in. I'd personally love to see it in setcpu or romtoolbox.
 
jokersax11
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Maybe i should build a battery life kernel



Quote:
Originally Posted by Lokifish Marz View Post
1gHz and higher tend to float around -75 to -100 on average. Below 1Ghz it's anywhere between -250 and -150 on average. Attached you will find a list of all reported undervolts on the Atrix minus the ones that are the same undervolt for every clock speed. I've noticed that it's hard to fine tune the jump between the 700Mhz range and 1Ghz. Keeping the jump no greater than 100mV seems to be best.


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MinceMan
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Maybe i should build a battery life kernel







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That would be cool. Just a posting of all successful settings would be nice too.

One thing I've never understood are a bit more of the specific on how uv affects performance, from the comments it seems to have even more of an effect the more you oc (you don't seem to be able to uv as much when you oc).

Sent from my Photon 4G
 
Lokifish Marz
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Quote:
Originally Posted by MinceMan View Post
That would be cool. Just a posting of all successful settings would be nice too.

One thing I've never understood are a bit more of the specific on how uv affects performance, from the comments it seems to have even more of an effect the more you oc (you don't seem to be able to uv as much when you oc).

Sent from my Photon 4G
My undervolt txt are all the successful settings for our sister phone the atrix. From what I've seen, the results are in line with both my mopho's. Overclock/undervolt is more an art than science. There are many factors that affect results such as cpu batch, ambient temps, mainboard variances and the list goes on. This is why pc overclockers will hunt for specific batch numbers when overclocking. The same goes for undervolting.

With regards to performance. There is a very fine line between efficient and inefficient when oc'ing and uv. I'll be honest, I've spent hours fine tuning an oc/uv to get the best performance at a given clock rate. I've used the following formula (benchmark score/uv= efficiency @ tested clock speed) and it has paid off in the past (the art vs science thing still applies though). I have, in some cases, found the device to be more efficient with a tuned undervolt than stock. However no to devices are the same, EVER.

 
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