Develop Bugs

1.5 or 1.6 ghz kernel?

Is this able to be done and if so how do u go about compiling a kernel??
Sent from my SPH-D700 using XDA App

Yes it is able to be done.
Sent From My Evo Killer!!!

I've seen the 1.8mhz custom kernels over on the EVO SHIFT 4G thread and the stock speed of that kernel is only 800mhz...and if they can push that a whole ghz past its regular operating speed...then I don't think 1.5 or 1.6 would be out of the question...id love to see that (HINT HINT TO OUR DEVELOPERS!! ;-)).

The problem that needs to be overcome with the current 1.4 kernels is that we're already at the top of the voltage specifications for the CPU (per manufacturers dox anyway) to keep the phone stable at 1.4. All chips are a little different - some phones might be stable with less voltage at this freq or others might be able to handle a little more juice. But, we're already at a 40% overclock... How fast do you really need this thing to be?

I personally would not use it if it was overclocked that high. That is to much for it. And the Shift has a different chip in it so it can be different overclock.

Moved to Q&A. And it can be done if you want to fry your phone

Some phones can't even handle 1.2ghz cause of the ****ty silicone on there chips. This includes my phone .
Thomasskull666 as a 1.4ghz kernel released to the public but he has a private kernel at 1.48ghz. He's trying to get a 1.5 for the public. The 1.6ghz we had on eclair was found out to be a placebo cause of error in the coding. With the phone clocked at 1.6ghz it actually ran at 1.0 and the rest of the phone slowed down. It was like those cartoons and you see a man walking at a steady pace but the background was moving at warp speed.
Sent from my SPH-D700 using Tapatalk

That just seems too fast for this phone. Personally 1.2 GHz seems fast enough while 1.3 GHz is just a nice little cherry on top in terms of speed.

[REF] Trivial but interesting facts about our T989

For those that came from Eynos / Hummingbirds
Did you noticed the T989 doesn't get as hot, when it's using WiFi or 3G/4G or playing 3D games constantly?
Also the same can be said about OC-ing
on the Eynos / Hummingbirds CPUs even if you OC it by a little it gets very hot
imagine those that are running the classic SGS2 at 1.6 Ghz, it must be burning hot
I have mine lagfree governor running mostly at 1.8 Ghz in games and it is not even hot, it's just warm
on the other SOC even an OC of 200 Mhz makes it very hot, from say 1 Ghz to 1.2 Ghz, or say from 1 Ghz to 1.4 Ghz it makes the other SOC CPU very very hot

AllGamer said:
For those that came from Eynos / Hummingbirds
Did you noticed the T989 doesn't get as hot, when it's using WiFi or 3G/4G or playing 3D games constantly?
Also the same can be said about OC-ing
on the Eynos / Hummingbirds CPUs even if you OC it by a little it gets very hot
imagine those that are running the classic SGS2 at 1.6 Ghz, it must be burning hot
I have mine lagfree governor running mostly at 1.8 Ghz in games and it is not even hot, it's just warm
on the other SOC even an OC of 200 Mhz makes it very hot, from say 1 Ghz to 1.2 Ghz, or say from 1 Ghz to 1.4 Ghz it makes the other SOC CPU very very hot
Click to expand...
Click to collapse
True that brother.had a vibrant,and that baby was always hot when oc.I just love this bad boy.
From a glaxay better than yours.

NICE POST ALLGAMER
I think it's very true.
I o/c all the way up on any kernel I use and I'm never overheating :-D
Let's not forget that our battery cover and therefore feel of the phone is wayyyyyyyyy nicer than international sg2
Sent from my SGH-T989 using xda premium

You're right I totally forgot to mention we have better battery life than the classic SGS2 on Exynos
and the nicer feel of the phone back cover
Sent from my SGH-T989 using xda premium

Hmm
Sent from my Samsung Galaxy S II using Tapatalk Pro.

I came from a sensation, and I have to say I've been impressed so far. Battery life at lower clock speeds on that phone were abysmal. I've put this phone e through the paces and been very happy so far
Sent from my SGH-T989 using xda premium

i noticed how it never gets hot great, now we need someone to overclock it to 1.9 without getting hotttt

Is the phone stable when overclocking past 1.3ghz?

I heard there was a problem with stability issues before. Has it been fixed?
Also, do any of you guys feel the need to OC in the first place?

iArtisan said:
I heard there was a problem with stability issues before. Has it been fixed?
Also, do any of you guys feel the need to OC in the first place?
Click to expand...
Click to collapse
I tried OC'ing to 1,4 for a short time, didnt get any instabilities.
Which leads me to question two. No I don't feel the need to OC this phone, it is still good enough to cope with everything i throw at it.

The worst that will happen is that it will run a little hotter than normal. I was running Trinity Kernel on RasCream ROM clocked at 1.5GHz and it was fine, nothing crashed, no reboots, all was well.
Besides; It's a Nexus, it was built for this!

This varies for everyone
Sent from my GT-I9300 using Tapatalk 2

Meh. It all varies. No 2 chipsets are the same. What may work for someone else may not work for you. Trial and error is the only surefire way to find out.

Hi,
I agree with what has been said above, all the CPU's are not equal but actually the progress made by the kernel devs allows all (or almost) phones to run at 1.3* Ghz (1.34/1.35 Ghz, it depends of the kernel) without any issues.I think it's for all, actually I don't remember a user with issues at 1.3* Ghz...
And for most phones 1.5 Ghz is fine.For some others, above 1.5 Ghz is problematic but it depends also of too many factors.
Now it's not like it when the Genx came out, where 1.3 Ghz was the limit of CPU overclock for all the phones.
And many people can run stable at 1.65 Ghz, also it depends of the kernel.
For me for example my max CPU freq usable each day, so stable is 1.72 Ghz with Glados kernel, above (like 1.8 Ghz) it runs fine for 30 mins, sometimes 1 hour, but after always freeze/reboot... maybe my CPU can't reach this CPU freq or maybe my settings are wrong (voltage) ...
I agree, an extreme overclock like 1.72 Ghz is not really necessary for all day (heat, battery life, etc...) but a little overclock like 1.5/1.53 Ghz and you a difference in certain case (openning some apps, general UI, browsing, etc...).
But if we have the ability to test and play...why not... ,in any case for me it's yes, I like overclock and test the possibilities/limits of my phone, different settings...
Everyone does as he wants and it depends on what you want (battery life,a little more power in some situation like playing or a higher bench score ).

Well considering Texas instruments recommended highest clock speed for this processor is 1.5 ghz I'd say your fine. Anything above that is dependent on how well your chip set will handle it. Besides who honestly has needed to OC for anything other than benchmarks?
Sent From My Sprint Galaxy Nexus

overclock 1.6ghz

anyone got this overclocked

mox123 said:
anyone got this overclocked
Click to expand...
Click to collapse
And instantly overheated? :cyclops:

Yes .
Sent from my HTC One X using Tapatalk 2

Gpu overclock would be more useful than CPU.
Sent from my HTC One X using xda app-developers app

treebill said:
Gpu overclock would be more useful than CPU.
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
ok gpu overclock then?

I would overclock my HOX...in a block of ice. Or...well, in real life i dont want to overclock it because it would smoke out in my hand
Overheating is a big problem even without overclocking, imagine it running on 1,6ghz...
Sent from my Renovated HTC One X using Tapatalk 2

Can't really see why you would want to overclock the One X, the phone is blazing fast anyway, 4 cores at 1.5 is enough..
But like everybody else said, the phone would probably burn up..

I wouldnt overclock my device - at least not at the stage we reached now.
Why?
a) As long as there is no way to lower the voltage this might toast your device - its a unibody, keep that in mind!
b) 100 MHZ more would have literally no effect - its a 6 GHZ device, even if you boost it up to 6,4 - you wont notice, it will just drain your battery.
6 GHZ is WAY enough...this is smartphone...I mean...seriously...its got more power than my 4 years old 1K €uro notebook...

Illux said:
I wouldnt overclock my device - at least not at the stage we reached now.
Why?
a) As long as there is no way to lower the voltage this might toast your device - its a unibody, keep that in mind!
b) 100 MHZ more would have literally no effect - its a 6 GHZ device, even if you boost it up to 6,4 - you wont notice, it will just drain your battery.
6 GHZ is WAY enough...this is smartphone...I mean...seriously...its got more power than my 4 years old 1K €uro notebook...
Click to expand...
Click to collapse
well first of all you can't just multiply the frequency by the number of cores. I'd much prefer an actual 6Ghz single core processor over 4x1.5Ghz because it won't have any compatibility and efficiency issues. Assuming they are of the same architecture and power usage of course.
Also the ARM low power SOCs probably don't have comparable number of commands per clock cycle as an x86 high performance CPU, even if it's 4 years old.

jacobgong said:
well first of all you can't just multiply the frequency by the number of cores. I'd much prefer an actual 6Ghz single core processor over 4x1.5Ghz because it won't have any compatibility and efficiency issues. Assuming they are of the same architecture and power usage of course.
Also the ARM low power SOCs probably don't have comparable number of commands per clock cycle as an x86 high performance CPU, even if it's 4 years old.
Click to expand...
Click to collapse
i agree.. when the multi-core CPUs first came out intel said doubling the core number would give as 47% boost in total performance (not x2 like apple says as they do not know it) lets assume that to be %50 to make the math a little bit easier..
so basically we can make the math here as; 4 cores at 1.2Ghz (when the all 4 active the clock is 1.2Ghz) gives us 1.2 x 3/2 x 3/2= 2.7 Ghz single core performance.. this value for SGS3 is; 1.4 x 3/2 x 3/2= 3.15Ghz
and here we can say dual core at (X) Ghz gives us (X) x 3/2=2.7 thus the (X) = 1.8 Ghz.. so, if you overclock any arm9 based Dual CPU to 1.8 Ghz you get the same performance "on paper".. if you want to catch up with SGS3 we need to OC it to 2.1 Ghz which is impossible at the moment i guess..
what makes the difference here is the lower loads or multiple loads on the CPU.. corecontrol users probably would have noticed; sometimes when the all 4 core are active the clock is only 480 or 640 Mhz (even 320 sometimes if i remember correctly) .. the same amount of load could be taken care of by a dual core at about 720 or 960Mhz.. but here the quad core system stays cooler with a little less energy consumed (or wasted) (as long as all the cores are in one uni-body structure, putting 2 or 4 single cores phsically together is not the case for our smartphones) this is how apple made sure about the smoothness of the ipad 2, new ipad and the iphone 4s.. they used lower clocked 2 power vr 543 GPUs.. when the load is little they can clock down to very low speeds and share the load..
and also you can always find an emtpy core waiting for new task when the others are busy..
so, long story for short; if we were dealing with a little amount but hard processes, having a single core at 2.7Ghz would be good since the quad core design would not cut one task into 4 pieces... as long as we were not thinking about the battery life and the heat.. but since we are dealing with lots of tasks which all could be handled by 1.2Ghz power having 4 cores is better for battery saving and having an empty core for a new task to run parallel with the other running tasks in the background..

It is OC out of the box I think Nvidia OC them for us and it's already pushing itself at the very edge of what is possible for it to do based on temperature, I seem to remember Hamdir saying something along those lines once upon a time...
Why bother to OC it's fast enough as it is.
---EDIT---
hamdir said:
only faux kernel betas allow OC
big warning OC is bad for the HOX given the thermal envelope
you are risking both you battery and processor if you OC
i know you are used to OC from other devices but those had headroom, it is not the case this time, T3 is operating at its max thermal capabilities on the HOX
Click to expand...
Click to collapse
hamdir said:
the snapdragon 2 on the Arc had a lot of headroom
the chipset is rated @ 1.5ghz stable!
not the case with T3 its milking the very maximum of the 40nm process
in other words Nvidia is OCing its T3 out of box because their chips are designed to survive massive amount of heat (sadly it doesnt mean the battery or other components would survive)
it is already Overclocked lol
sometimes you have to listen to the "science" of it and surrender
Click to expand...
Click to collapse

Cpu throttle??

ok guys I downloaded cpu spy and after using the phone for 10min my phone never hit above 1.5 ghz ... I thought this phone was at 1.9 ,I did a lot of testing and still couldn't get the phone past 1.5 , no wonder things are not as smooth as they should be. I also upgraded to the new firmware it is a bit faster but I see the phone cpu is always around 1.5-1.1 ghz not good to run as smooth , also if cpu the low I'm sure gpu as low why all the animations run slow.
Edit : was playing angry birds star wars check back cpu ran at 1.1ghz -950mhz ...
Edit2: so i ran a anTuTu test and finally it hit at 1.9ghz and it drop down to 1.6ghz and 1.7 ghz for a few seconds. I really feel if this phone ran past the 1.5 it be a lottttt smoother i mean a lot.. just my 2cents trying to help out.
Sent from my SGH-M919 using xda premium

CPU factors
Listed CPU speeds are a maximum, a lot of factors play into that actually CPU speed you will see when running various apps.
Also, the CPU monitor reporting may not be 100% accurate, again due to several factors.

Also for reasons spread around this forum (all the battery threads popping up after the 1st week with the devices in hand)
The default cpu speed governors are likely set to preserve battery and only kick into high gear when the need REALLY presents itself.
Ie to samsung a little stuttering is fine if it means the battery lasts an extra hour in most cases
Most custom roms have different cpu governors in place - designed in part to respond more quickly to system load and increase performance.