yashsingh1/xdaforums huggingface dataset:
[Galaxy Ace S5830 Original Android Development] traduz:
I'm stable at 844Mhz, higher then that phone freezes or things start acting weird, like not opening some menu's, some FC.
[Galaxy Ace S5830 Original Android Development] Dyzophoria:
didn't someone mentioned somewhere that the processor in the ace is already well over its theoretical speed at default voltages? if this were true its really no surprise that it already starts choking up at such a small increment in overclocking the frequency, unless voltages can be tweaked, well see, but still, the battery drain and extra heat that this will bring to the table still proves to be a bit concerning to me,lol, honestly don't be disappointed by the oc kernel patch, with a device such as the ace, we are really quite pushing everything to the limits already :)
[Galaxy Ace S5830 Original Android Development] adiif1:
Same 844 its good xD
[Galaxy Ace S5830 Original Android Development] mdfzhi:
its not worth it the risk of damaging ur cpu just for that additional 44mhz. looking into the kernel soucecode i feels like its already on its limit on 800mhz. it uses the same sourcecode as older msm7227 600mhz like xperia x8, htc legend etc, just a slight modification.
[Galaxy Ace S5830 Original Android Development] Jar3112:
You mean that Samsung fooled us selling a 600 Mhz at the price of an 800 Mhz?

Sent from my Galaxy Ace on GLSMT 2.1 with XDA app.
[Galaxy Ace S5830 Original Android Development] mdfzhi:
i'm not saying it uses the same chip.
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
I am at 902Mhz and the battery doesn't go down as bad as 800 .

I mean , as in it has mote accurate reportings .
[Galaxy Ace S5830 Original Android Development] hypergamer1231:
Hi can you please tell me what is it that you are doing that enabled you to reach 902 mhz stable please do share i have problems aboce 825 and my battery without oc lasts barely 6 hours
[Galaxy Ace S5830 Original Android Development] russ18uk:
Try disabling SWAP.
[Galaxy Ace S5830 Original Android Development] 1jesper1:
How to disable swap in a2sd?
[Galaxy Ace S5830 Original Android Development] russ18uk:
Use the app.
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
Battery calibration + Cool environment
[Galaxy Ace S5830 Original Android Development] hypergamer1231:
battery calibration possible yes

but cool environment no becuase i am in india normal temps are 30 -35 C
[Galaxy Ace S5830 Original Android Development] djsky2011:
Our CPU is stock 800 and not factory overclocked, if that were the case Samsung wouldn't have given us an upgrade to gingerbread and maybe even ice cream. Undervolting is our problem as the CPU needs to run cooler and with less voltage at each clock cycle. The reason it reboots is a safety feature, so be thankful it does
[Galaxy Ace S5830 Original Android Development] russ18uk:
I've respected your replies, but this is just plain talking out of your rear end.
[Galaxy Ace S5830 Original Android Development] consegregate:
+1 he's not making sense. If what were the case?
[Galaxy Ace S5830 Original Android Development] Zeduaz:
So i put this modified kernel out of phone... today start crasch twitter, awd, battery widged at 844... so i made recovery to my old setings and kernel ketut lenovo #8... little bit unhappy because i want "more power"... so back to normal cyanoace...
[Galaxy Ace S5830 Original Android Development] happily1986:
Do you know what is the difference between MSM7227 and MSM7227-1 Turbo? If you don't know what i am talking about then it is valid proof that what you said is pure natural fertiliser.
[Galaxy Ace S5830 Original Android Development] Jar3112:
I'm getting confused.. Is it stock overcloked or not?

Sent from my Galaxy Ace on GLSMT 2.1 with XDA app.
[Galaxy Ace S5830 Original Android Development] happily1986:
Yes. It has already been factory overclocked from 600MHz to 800MHz.
[Galaxy Ace S5830 Original Android Development] djsky2011:
Haha even I don't believe what I wrote but still I think our CPU can handle more, I'm currently studying both architecture and refuse to admit that our CPU comes pre overclocked unless someone can provide design specs
[Galaxy Ace S5830 Original Android Development] djsky2011:
Furthermore if ketut thought it was already overclocked why would he even bother wasting his time doing an overclock kernel?
[Galaxy Ace S5830 Original Android Development] russ18uk:
I'd bet my mothers ***** this is a rebranding done on hand picked cops because the fabrication provided better than expected speeds. It's also possible it's a newer revision slightly tweaked so they kept the core layout but changed 1%. Anything else would have warranted a totally new model number. Think how Nvidia and Ati change a number for their speed bumps: 460 to 480 our gt/gtx and so forth. Complete marketing

101.
[Galaxy Ace S5830 Original Android Development] russ18uk:
Because there it's almost always spare leg room left in the chip. If not enough made it to 800mhz they (Qualcomm) wouldn't have invested so much in binning cops capable of 800mhz and reselling them as turbo
[Galaxy Ace S5830 Original Android Development] mdfzhi:
i'm not exactly 100% sure and not dare to say that its preoverclocked from factory, but i do believe that its already on its limit at 800mhz, above that will be very unstable. it uses the same sourcecode as older 600mhz msm7227 cpu, with only slight difference. see it for urself, in /arch/arm/mach-msm/acpuclock.c file.. compare it with the same file from other msm7227 600mhz device eg zte blade/optimus one
[Galaxy Ace S5830 Original Android Development] traduz:
I wonder why some of you can use phone at 902Mhz and i cant even use mine above 844Mhz.

I'm back to normal kernel, phone was acting weird in 844Mhz too.
[Galaxy Ace S5830 Original Android Development] QNBT:
A simple answer would be tweaks and settings.
[Galaxy Ace S5830 Original Android Development] djsky2011:
Ok I'm pretty much happy with the way it is anyhow I'm using 844 and it seems pretty fast :-)
[Galaxy Ace S5830 Original Android Development] Zeduaz:
sorry but dont think that you are right... I was today whole day trying maebe every kind and type of setting on my phone about cpu oc... nothing helps and it was not possible to be stable at more than 844 Mhz... at the end there starts problems at 844 too... so Im back at my old kernel and no freezing and problems...

just read this from me: http://xdaforums.com/showthread.php?t=1258830&page=180
[Galaxy Ace S5830 Original Android Development] Cool_On3:
MSM7227T

http://pdadb.net/index.php?m=cpu&id=a7227t&c=qualcomm_msm7227t

MSM7227

http://pdadb.net/index.php?m=cpu&id=a7227&c=qualcomm_msm7227

i don't believe there is overclocking

In GSM Arena says "800 MHz ARM 11 processor" in ARM says "800MHz to 1GHz+ at 65G in under 2 mm2"
[Galaxy Ace S5830 Original Android Development] russ18uk:
There are many reasons why and how the chip can be rebadged turbo. This is a pain in the rear on a phone so bear with me. You can also look up fabrication on wikipedia or other sources.

When a chip designer designs a chip, they design it based on a manufacturing process such as 28nm, 40nm and so forth. They make a prediction of how far can the chip can run at. It's then taped out and sent to fabs such as tsmc, global foundries, Samsung or whoever is making the wafers.

Depending on yields and improvements to the process used, there will almost always be revisions made.

If enough chips are able to run at higher than anticipated frequencies they can think about binning cops capable of higher frequencies and saved.

If there it's an order of 300k chips at 600 mhz with 450k produced the higher rated can be rebadged and sold off at a higher frequency. If there is no demand for the higher frequency chips you can be lucky in gaining a substantial overclock.

Another factor is voltage. If, at, say, 1v the chips can run at 600-700 mhz, and at 1.05v they can run at 800 mhz, they can turn round and sell them that way.

So many factors such as those and more can determine whether a manufacturer brands the same chip that leads me to believe it is not a complete architecture change but rather a sales* or production change.

*If the chips were expected to run at 600mhz but can actually run at 800 and an order was cancelled at 600 due to low sales, a rebrand can help push excess stock.
[Galaxy Ace S5830 Original Android Development] mdfzhi:
for those whos annoyingly repeatedly asking why ur phone just stuck/freeze/reboot at lower freq while others can get stable higher freq, u should know that cpu is unique for each and every device, even for the same model. each cpu had its own characteristic, it wont be the same. so stop asking those annoying question. read wikipedia, google a bit about overclock and cpu before repeatedly asking those annoying question.
[Galaxy Ace S5830 Original Android Development] Zeduaz:
So I got it... My cpu is alive and now hes at strike or in some form of protest because he dont want to be killed by me :-D

( only joke... )

my way is only 800 Mhz - I have to try oc, but I must say thats maebe better to stay at nice stable stock frequency... its only my point of view... ;-)
[Galaxy Ace S5830 Original Android Development] happily1986:
quoted for quality, unlike a bunch of nonsense replies along the way.
[Galaxy Ace S5830 Original Android Development] doctorace92:
Quoting random data from google does not make you right. If your allegations are true give concrete evidence because these are serious allegations. Answer this simple question first. Do you even know who wrote the original overclocking source code for this 800 Mhz processor?
[Galaxy Ace S5830 Original Android Development] djsky2011:
I'm just waiting for someone to prove to me that our ace peaks at 800mhz. I know they are legal aspects in selling a device saying its something when its really not. If I found out my CPU is really 600mhz overclocked to 800 so it will sell more I'm suing Samsung straight up
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
It might be true , but I don't believe it .

The MSM7227T might be a different processer , but it's not overclocked because the 600Mhz was in so many mid-range phones .
[Galaxy Ace S5830 Original Android Development] consegregate:
It is not overclocked, according to a Qualcomm staff.
[Galaxy Ace S5830 Original Android Development] djsky2011:
Thanx, I just don't see the sense in Samsung getting in legal problems by lying about the actual speed of the phone they're selling. I bought this phone because one of the selling points on the box stated 800mhz, not 600mhz overclocked. Under consumer law that's illegal and misleading advertisement
[Galaxy Ace S5830 Original Android Development] domnic79:
960Mhz and Freeze.
[Galaxy Ace S5830 Original Android Development] russ18uk:
Sorry, dude, I've been reading this stuff since 2001. There is zero difference between Qualcomm, Samsung, nVIDIA and AMD/ATi (who use fabs such as Global Foundries/TSMC) or Intel when they design/make processors. The same silicon is used for all their codenamed CPUs.

During manufacturing the processes are refined - the processors are given new revision numbers. The core architecture is the same throughout; however, the new architecture can allow for higher speeds. Take Samsung's Exynos 4210:

The chip is capable of operating between 1GHz and 1.2GHz. Originally they may have only reached 1GHz, but, through refinement, they were able to get 1.2GHz.

Here's an article on Texus Instruments on how to find the revision numbers on their Cortex A8s.

Now, like I said: during updated revisions, Qualcomm can see how high the chip can run. If they have produced 2 million units of which 90% can run higher than originally anticipated, they can give the chip a new name (similar to how Intel/AMD et al give new model names for their chips with similar speeds - Core i5-2500 @ 3.3GHz versus Core i5-2400 @ 3.1GHz), in this case, the addition of a T at the end of the model name.

Maybe I used the term overclocked too loosely, but at the end of the day, if the architecture wasn't the same between the two different model numbers, Qualcomm would have given the CPU a completely different name. In fact the datasheets above state no differences except release date and features 800MHz on the Turbo. You already provided proof I needed.

CPU Cores are the same. Graphics chip and features are the same.

/sighface
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
/doublesighface

Then how does an already peaked processor still be able to be overclocked ?
[Galaxy Ace S5830 Original Android Development] downloadonlyaccount:
Noticed that sound cracks and stutters a little bit when having sound-options in DSP-Manager turned on. Only me ?
[Galaxy Ace S5830 Original Android Development] russ18uk:
Mate, you already see from the results here that the chip is by and large, barely able to break past 820MHz from the many users who have posted here. 900MHz seems upper limit. If only 10% of the chips can break 900MHz, it would be pretty stupid of Qualcomm to sell these chips at 900MHz as the yield is far too low. We don't know what the yields were for these chips at 800MHz.

Maybe Qualcomm expected 800MHz but, due to poor results, only able to hit 600MHz. With slight changes or improvement to the silicon/fabrication process, were able to get 800MHz from an unknown number of wafers.

Take a look at how chips are designed and made http://en.wikipedia.org/wiki/Semiconductor_device_fabrication#Device_test
[Galaxy Ace S5830 Original Android Development] QNBT:
Quote fail?

It says "1.2Hz and 1.0GHz"

Hz =/= GHz
[Galaxy Ace S5830 Original Android Development] hypergamer1231:
the day ketuts develops voltage tweaks all the above arguments and questions will be taken care of. Till then keep going guys am enjoying the pop corn:D
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
Okay .
[Galaxy Ace S5830 Original Android Development] russ18uk:
Haha misread. Operates up to 1GHz then so they could sell chips anywhere between those frequencies. Though I'd doubt you'd see 10Hz Android phones. :p
[Galaxy Ace S5830 Original Android Development] scoffyburito:
I thought I was the only one! !
[Galaxy Ace S5830 Original Android Development] mdfzhi:
sure, read this

http://xdaforums.com/showpost.php?p=9704402&postcount=22

quoted from optimus one forum. basicly its the same for ace. both using the same kernel source as both is msm7227. i've seen kernel source for ace, i've tinker with it for days now ;)
[Galaxy Ace S5830 Original Android Development] djsky2011:
Yeah we just wait and see ketuts verdict on this matter because as I said he wouldn't even bother making a kernel for overclock if it wasn't possible. I'm sure he also already examined the codes and CPU architecture
[Galaxy Ace S5830 Original Android Development] domnic79:
So true.
[Galaxy Ace S5830 Original Android Development] mdfzhi:
dont get ur hope too high tho.

i've never came across any msm7227 undervolted kernel. if ketut manage to do it, hes the first person successfully undervolt a msm7227 kernel.

htc legend/xperia x8/htc aria/zte skate/blade have been around for years, but no one have successfully undervolt those device kernel yet ;)
[Galaxy Ace S5830 Original Android Development] Jar3112:
Well, let's just hope! :-P

Sent from my Galaxy Ace on GLSMT 2.1 with XDA app.
[Galaxy Ace S5830 Original Android Development] domnic79:
Running on 921Mhz. Encountered sum abnormal FC's.
[Galaxy Ace S5830 Original Android Development] consegregate:
X8 has undervolt modules.
[Galaxy Ace S5830 Original Android Development] happily1986:
Pardon me but for the upteenth time, i am getting uncomfortable with the idea of undervolting to stabilise a overclock.

In my years of overclocking, i have had to accord voltage increments in order to stabilise the CPUs. Well i have never overclocked a SoC before so i guess the rules are different but what gives?

Why does it take a lower voltage to make it work more and give more? This doesn't make any sense to me.
[Galaxy Ace S5830 Original Android Development] downloadonlyaccount:
If the CPU gets too hot (and so stops working), undervolting could help avoiding to high temperatures. But i doubt our CPU allows high undervolting, because this might cause instabilities.
[Galaxy Ace S5830 Original Android Development] mdfzhi:
another method to stabilized overclock is to also overclock the ahb bus. i'm guessing this is the value ketut use now

{ 1, 806400, ACPU_PLL_2, 2, 0, 201600, 3, 7, 122880 },
{ 1, 825600, ACPU_PLL_2, 2, 0, 206400, 3, 7, 122880 },
{ 1, 844800, ACPU_PLL_2, 2, 0, 211200, 3, 7, 122880 },
{ 1, 864000, ACPU_PLL_2, 2, 0, 216000, 3, 7, 122880 },
{ 1, 883200, ACPU_PLL_2, 2, 0, 220800, 3, 7, 122880 },
{ 1, 902400, ACPU_PLL_2, 2, 0, 225600, 3, 7, 122880 },
{ 1, 921600, ACPU_PLL_2, 2, 0, 230400, 3, 7, 122880 },
{ 1, 940800, ACPU_PLL_2, 2, 0, 235200, 3, 7, 122880 },
{ 1, 960000, ACPU_PLL_2, 2, 0, 240000, 3, 7, 122880 },
{ 1, 979200, ACPU_PLL_2, 2, 0, 244800, 3, 7, 122880 },
{ 1, 998400, ACPU_PLL_2, 2, 0, 249600, 3, 7, 122880 },
{ 1, 1017600, ACPU_PLL_2, 2, 0, 254400, 3, 7, 122880 },
{ 1, 1036800, ACPU_PLL_2, 2, 0, 259200, 3, 7, 122880 },

so to overclock the ahb bus, this is how it looks

{ 1, 806400, ACPU_PLL_2, 2, 0, 268800, 2, 7, 122880 },
{ 1, 825600, ACPU_PLL_2, 2, 0, 275200, 2, 7, 122880 },
{ 1, 844800, ACPU_PLL_2, 2, 0, 281600, 2, 7, 122880 },
{ 1, 864000, ACPU_PLL_2, 2, 0, 288000, 2, 7, 122880 },
{ 1, 883200, ACPU_PLL_2, 2, 0, 294400, 2, 7, 122880 },
{ 1, 902400, ACPU_PLL_2, 2, 0, 300800, 2, 7, 122880 },
{ 1, 921600, ACPU_PLL_2, 2, 0, 307200, 2, 7, 122880 },
{ 1, 940800, ACPU_PLL_2, 2, 0, 313600, 2, 7, 122880 },
{ 1, 960000, ACPU_PLL_2, 2, 0, 320000, 2, 7, 122880 },
{ 1, 979200, ACPU_PLL_2, 2, 0, 326400, 2, 7, 122880 },
{ 1, 998400, ACPU_PLL_2, 2, 0, 332800, 2, 7, 122880 },
{ 1, 1017600, ACPU_PLL_2, 2, 0, 339200, 2, 7, 122880 },
{ 1, 1036800, ACPU_PLL_2, 2, 0, 345600, 2, 7, 122880 },
[Galaxy Ace S5830 Original Android Development] consegregate:
I never said it was to give higher clock frequencies. Where did you read it? How did you assume?
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
That is very confusing . @.@
[Galaxy Ace S5830 Original Android Development] mdfzhi:
its not for everyone to understand, its just for anyone who know howto understand ;)
[Galaxy Ace S5830 Original Android Development] happily1986:
not you. i am just directing the question to you as you seem more knowledgeable.

There are a handful of posts along the way that kept talking of undervolting to stabilise the overclock.
[Galaxy Ace S5830 Original Android Development] consegregate:
Oh alright. Undervolting can be fine for the lower clock speeds but it'll never help to increase the upper limits; that is just illogical. Hell, undervolting *MIGHT* even be useless for the default 800mhz upper clock speed since we see sleep of deaths, if CPU not receiving enough voltage is that real cause.
[Galaxy Ace S5830 Original Android Development] skynet28:
Agreed. But undervolting modules are more practical and will be useful for those who wish for a better battery backup. I think undervolting modules are safer than overclocking(I have compiled for my debian laptop and they are really useful extending battery and lowering temperature of the laptop). Although our ace processor is not overclocked,its overclocking potential is certainly limited.

So if undervolting modules can be compiled we can have the option of undervolting when performance is not required and call off undervolting when required.
[Galaxy Ace S5830 Original Android Development] smorz:
Here's my report after 3 day of testing (about 6 hours each non-rebooting frequency)

Underclock:

- 480 no noticeable lags. Almost everything work smoothly (awesome, isn't it?)

Overclock:

- 806 and 825 work perfectly

- 844 seldom freeze

- 864 several freeze

- 883 instant reboot

Governor as always been "ondemand"
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
I can even run 883 on performance and have no reboots .
[Galaxy Ace S5830 Original Android Development] ChaosChris:
Me too :D On 940 / 960 i get sometimes FC´s but on 921 all apps are working and i have no reboots :D
[Galaxy Ace S5830 Original Android Development] smorz:
Any ideas about the cause of this HUGE gap? young kernel? my firmware background?

-------

EDIT

My baseband is KS2, so that might be the thing that make the difference
[Galaxy Ace S5830 Original Android Development] mdfzhi:
simple, each and every cpu is unique even for the same model.
[Galaxy Ace S5830 Original Android Development] consegregate:
Ketut has not been back since he released this kernel :(

Anyone specialized in this field can add more governors to the kernel? SmartassV2 or some others that DoomKernel has, it might solve the lag right after waking from deep sleep.
[Galaxy Ace S5830 Original Android Development] jasonlev:
mY S5830 can not turn on the wifi after upgrade this kernel on Glsmt 2.1 rom. and the boot animation didnot work too.
[Galaxy Ace S5830 Original Android Development] consegregate:
this is for cyanogenmod.
[Galaxy Ace S5830 Original Android Development] jasonlev:
Thanks for the explanation.
[Galaxy Ace S5830 Original Android Development] jimbo.levy:
Flashed the OC kernel. Anything above 940 and the phone switches off. Currently at 921. Works great! Thanks =D
[Galaxy Ace S5830 Original Android Development] djsky2011:
What Rom r u using?
[Galaxy Ace S5830 Original Android Development] domnic79:
It should b cyanogenmod bcoz oc kernel is made for cyanogenmod rom.

CyanogenMod 7.1-cooper-KANG-RC1 Android 2.3.7

Overclocked @ 921Mhz

Dta2sd: enabled

8gb class 2 + 1gb ext4 partition
[Galaxy Ace S5830 Original Android Development] casiocas:
Hey!

We will see. I but it to 902... and right now its working fine. I will try it a bout few days and then give feedback.

Thanks to ketut for oc!

Go on man.

CHEERS! :cool:
[Galaxy Ace S5830 Original Android Development] jimbo.levy:
RC2
[Galaxy Ace S5830 Original Android Development] djsky2011:
i'm using grif's cm7 and can't seem to get over 825 without it freezing or rebooting
[Galaxy Ace S5830 Original Android Development] scoffyburito:
In reply to everyone confused with their max cpu frequency, ALL CPU'S ARE DIFFERRENT! Think of them as people, none are identical and all have their strengths and weaknesses. If you want to attempt to get a higher max frequency try cooling the phone first
[Galaxy Ace S5830 Original Android Development] casiocas:
Hey!

It restarted in 902.. and now I but it to 844. It looks more stable then other freq..!

CHEERS! ;)
[Galaxy Ace S5830 Original Android Development] aboobakr:
This kernel doesn't work. It says no zimage found
[Galaxy Ace S5830 Original Android Development] domnic79:
Ur d 1st genious who said its nt wrkin.

CyanogenMod 7.1-cooper-KANG-RC1 Android 2.3.7

Firmware: 2.3.4 KPH

Overclocked @ 921Mhz

Dta2sd: enabled

8gb class 2 + 600mb ext4 partition
[Galaxy Ace S5830 Original Android Development] CallMeVentus:
1) Don't quote the whole freaking thing

2) Flash it in recovery .
[Galaxy Ace S5830 Original Android Development] killmyself:
Running on 960MHz and is fine, noo reboots. Anything above caused some unexpected reboots after some time. So 960 is fine for me ;) thanks for that kernel guys.
[Galaxy Ace S5830 Original Android Development] djsky2011:
What ROM are u using?
[Galaxy Ace S5830 Original Android Development] Lou#1:
Change dealer:cool:
[Galaxy Ace S5830 Original Android Development] eraser0:
940 is cool till now

@first i changed it to 1ghz then reboot i freaked my phone screwd????

ha lool

ty maaan

we wanna the full

is there a chance to overclock the ram :)

lot of demands
[Galaxy Ace S5830 Original Android Development] killmyself:
@djsky2011: Grif's CM7. But it depends more on CPU than rom I think.

@Lou#1: wanna screenshot or whatever?

edit:

here you are:
[Galaxy Ace S5830 Original Android Development] traduz:
i was using 825mhz, but even this frequency isnt stable for my phone. After some days using it the phone stoped blocking the screen, and i got a lot of FC's.

=/
[Galaxy Ace S5830 Original Android Development] OiToBi:
Okay mind to explain meh plz .. I was just wondering does undervolting a device makes overclocking stable? M noob on dis stuff ... ^^