Hey fellow Nexus 4 owners, I heard a lot of rumors that the "Nexus 4 uses left-over parts" from the Optimus G. To that end, I want to find out the general quality of our CPUs.
Basically, when Qualcomm makes the APQ8064 chip that you see in our Nexus 4, there are 4 different "types" based on how it meets their quality standards. These are Slow, Nominal, Fast, and Faster. The main difference IIRC between these types is how stable each can handle undervolting. CPUs that are "Fast" for example come pre-configured at a lower nominal voltage than a "Nominal" type CPU, and more so than a "Slow" type. (Does this account for how some people's phones generate less heat? Maybe, maybe not. IIRC, there's like only a -100mV difference between Faster and Slow out of the box, however Faster CPUs should be able to handle lower voltages than Slow-type.)
To find out what binned CPU you have, I recommend the following:
YOU MUST BE ROOTED!
1) Install Terminal Emulator
2) Reboot your phone
3) Open Terminal Emulator, and type:
A line should be outputted that tells you what type you have.
For example, mine is NOMINAL. http://i.imgur.com/MUXrs.png
Please post your results in the following poll! (This poll began on /r/Nexus4, so rather than recreating the poll using XDA's system, I'm hoping to just get more results from here.)
http://poll.pollcode.com/qars3c
Basically, when Qualcomm makes the APQ8064 chip that you see in our Nexus 4, there are 4 different "types" based on how it meets their quality standards. These are Slow, Nominal, Fast, and Faster. The main difference IIRC between these types is how stable each can handle undervolting. CPUs that are "Fast" for example come pre-configured at a lower nominal voltage than a "Nominal" type CPU, and more so than a "Slow" type. (Does this account for how some people's phones generate less heat? Maybe, maybe not. IIRC, there's like only a -100mV difference between Faster and Slow out of the box, however Faster CPUs should be able to handle lower voltages than Slow-type.)
To find out what binned CPU you have, I recommend the following:
YOU MUST BE ROOTED!
1) Install Terminal Emulator
2) Reboot your phone
3) Open Terminal Emulator, and type:
Code:
su
dmesg | grep PVSA line should be outputted that tells you what type you have.
For example, mine is NOMINAL. http://i.imgur.com/MUXrs.png
Please post your results in the following poll! (This poll began on /r/Nexus4, so rather than recreating the poll using XDA's system, I'm hoping to just get more results from here.)
http://poll.pollcode.com/qars3c
