On Kitkat it is located at:
Code:/sys/devices/system/soc/soc0/soc_pvs
Thanks wootever ..
Sent from my SM-N9005 using Tapatalk
On Kitkat it is located at:
Code:/sys/devices/system/soc/soc0/soc_pvs
On Kitkat it is located at:
Code:/sys/devices/system/soc/soc0/soc_pvs
Thanks - found out I had a 1 - which figures - I can overclock a little - up to 249600 or so - but a soon as I try to undervolt it fc's or freezes up ...
Very interesting information - informative and helpful to get some better understanding about our phone
thanks again
I have a question if I may: anyway to under volt CPU on stock Kernel? I tried like 5 different programs and none of them worked. Trickster gives me error I don't have busy box, busy box gives me error my system partition is write protected, voltage control just crashed and pretty much nothing I tried worked so far. I'm not loading whole new kernel just to change cpu voltage and frankly this whole Android OS system begins to annoy me to no end. Can I just change voltage numbers in acpu_table?
Mines says 3. So how much, theoretically speaking, can I safely undervolt and overclock to remain on the stable stage?
Thanks for the great info.
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It won't matter because binning doesn't mean how much you can UV or OC. I have a worse bin # than others yet I can OC and be stable at 3GHz unlike some others who can't. Binning doesn't mean sh!^.
You have to test it yourself every device is different.
Sent from my SM-N900T using xda app-developers app
This whole thread is bases on erroneous assumptions of "binning", all microchips are tested at the factory to determine frequency and voltages, just like Intel and amd, cpus are tested and graded, these chips are sold as 3ghz, 2ghz, whatever, based on these results. Over clocking and undervolting are both detrimental on the life span of the chip. That is why chips from Intel (unless you buy an unlocked chip with no warranty) are locked to prevent this. As someone who has went through a LOT of chips it is not recommended. The qualcomm 800 chips are graded the same way, the chips are tested before the actual "model" is determined, and based on the test results, the model of the chip is determined. This has been standard operating procedure for chip fabricators for a long time. Rooting is great for adding functionality and removing bloatware, but and undervolting WILL reduce the life of the chip, this is a fact (check with qualcomm or arm if you doubt).
Your CPU bin is the result of your device's inspection and test criteria at the Qualcomm factory. Basically a high bin CPU like a 5 or 6 is a very well made chip and very stable with very little imperfections in the manufacturing process. What this means for a HIGH bin is that the chip requires less voltage to operate at any frequency than, say, a bin 1. This is why you see some people having reboot issues when trying to under volt - their processor becomes unstable with less juice because of less accurate tolerances.
Think of it as friction. If you have a well oiled arm on a machine, and part of that arm's job is to force it's way through an opening repeatedly, and the tolerances on the arm and the opening are just slightly off... Well, for that "more out of tolerance" one to do the same amount of work as one that's parts were machined perfectly, it would require more force, because there is more friction inherently from a less accurate build process. Think of the machine as the CPU, the force required behind the arm being moved to carry out the work as the voltage required in your chip, and the tolerance of the parts as the same - just a different types of parts because of course, it is an analogy.
A higher CPU bin is, generally speaking, a more stable chip. Bus frequency, RAM speed, GPU speeds... Everything is directly related, in terms of stability and capable clock rate, to the chip's bin (or quality of build).
Here is an interesting article that most people will find shocking. Look at the difference is clock rates of low and high binned chips:
http://www.androidbeat.com/2013/09/difference-snapdragon-800-2-2ghz-2-3ghz/#.Uwdf2p_TnqA
Note the example of the HTC One and Galaxy S4. It is obvious that Qualcomm sold their higher end chips to Samsung, while HTC was given the less quality chips. Same chip. Same theoretical clock rate. However, the chips in the HTC One are different in 1 aspect - their build quality, and therefore, their capable clock rate and their stable clock rate.
So, you mean to say I should avoid any Android device that uses a Snapdragon S800 SoC running at 2.2GHz, and not 2.3GHz? No! The S800 is the fastest SoC available from Qualcomm, and the slight difference in performance between the different bins should not affect your final decision at all. The S800 is more than future-proof so don’t worry about the slight difference in clock speed.
However, if you are a benchmark junkie or love to overclock your device, better get an Android device that uses the higher binned S800.
/d/acpuclk/pvs_bin
/sys/devices/system/soc/soc0/soc_pvs
This whole thread is bases on erroneous assumptions of "binning", all microchips are tested at the factory to determine frequency and voltages, just like Intel and amd, cpus are tested and graded, these chips are sold as 3ghz, 2ghz, whatever, based on these results. Over clocking and undervolting are both detrimental on the life span of the chip. That is why chips from Intel (unless you buy an unlocked chip with no warranty) are locked to prevent this. As someone who has went through a LOT of chips it is not recommended. The qualcomm 800 chips are graded the same way, the chips are tested before the actual "model" is determined, and based on the test results, the model of the chip is determined. This has been standard operating procedure for chip fabricators for a long time. Rooting is great for adding functionality and removing bloatware, but and undervolting WILL reduce the life of the chip, this is a fact (check with qualcomm or arm if you doubt).
Mine is a value of 5. Is there supposed to be anything else in there? It's just a 5, nothing else.