Database Develop

[Q] what is the function of Pershoot OC/UV Kernel?

Sorry for stupid question, pls give me some idea. Thanks

Just to state the obvious, to overclock and undervolt the CPU.
Less power, more speed.

evilkorn said:
Just to state the obvious, to overclock and undervolt the CPU.
Less power, more speed.
Click to expand...
Click to collapse
ic, does the CM ROM already do it or not? Since i found KOR have this feature but i can't found it mentioned in CM ROM. However I saw the setCPU reported the CPU speed is changing, seems doing what OC/UV is doing, which made me confused.

The CyanogenMod kernel is capable of overclocking. Pershoot and WildMonks and intersectraven are just different kernels that are all capable of OC and maybe UV. It usually says in the filename what its voltage is.

I can haz oc
Sent from my Nexus One using XDA App

[POLL] Overclocking, How far does you galaxy Go and S stay stable? without rebooting

How far is your Galaxy s stable?
mine just hits the 1.1GHZ, beyond that only crashes no matter which voltage i Use. please Use the poll so we have a good picture of what the average galaxy s is capable of..
also comment which version of SGS you are using and 8gb/ 16 Gb etc..

i9000m
PS this thread should be moved to General

had mine at 1.54ghz running MIUI with tk glitch kernel.
was amazingly fast, but my phone got hot quick, i dont like OC'ing i feel it may do more harm than good in the long run.
others may and will disagree but thats my opinion on it

Mine with 1.3GHz OC and some Undervolt is perfectly stable.....

simone201 said:
Mine with 1.3GHz OC and some Undervolt is perfectly stable.....
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Click to collapse
Agree with the chef ...
Although I can overclock to 1540MHz it does get hot and Im sure it will do damage in time ..
1300MHz is a great overclock ...
It will be interesting to see what my SGS 2 can be safely overclocked to

1.2 GHz seems ok for me - with UV
Doesn't really get hot.

Running mine @ 1440 MHz with MIUI but i think I can go higher if I want . I have the 8 GB version

1.3 and very stable and with great performance both q score caffiene mark and in daily use

Which voltage are you using?
Mine seems to freeze on voltages above the 1.3V,
above the 1.2 GHZ always freezes. I,m using darkeys 9.5 Rom.
someone some advice which rom is the best for OC, (just for benchmarking) for once.
rixsta said:
Agree with the chef ...
Although I can overclock to 1540MHz it does get hot and Im sure it will do damage in time ..
1300MHz is a great overclock ...
It will be interesting to see what my SGS 2 can be safely overclocked to
Click to expand...
Click to collapse

Mine can handle up to 1.3-1.4ghz

Im getting stable speeds of 1.7ghz. Im on watercooling though..
Sent from my GT-I9000 using XDA Premium App

1.4ghz is my max for full stability. 1.5ghz works fine (no reboots), but the CPU occasionally gives an invalid result during calculations, e.g. during benchmarks like linpack, results can sometimes be inaccurate; 1.44ghz also seemed to work, but I picked 1.4ghz max for longevity/reliability.
UV Values are:
100mhz - 200mV UV (750mV)
200mhz - 150mV UV (800mV)
400mhz - 100mV UV (950mV)
800mhz - 75mV UV (1125mV)
1ghz - 50mV UV (1200mV)
1.2ghz - 50mV UV (1300mV)
1.3ghz - 0mv UV (1400mV)
1.4ghz - 50mV UV (1400mV)
Max UV were found by starting from 100mhz Max frequency, decreasing UV until stable for 5 minutes of software decoding of 720p MKV, and then increasing Max frequency one step. Occasionally the previous step UV needed to be decreased by 25mV to obtain a stability at the next frequency step.
i9000M (16GB)

Guys, if you wanna push your phones to their full stability limits- play on Shadow Guardian game...)
Sent from my GT-I9000 using XDA App

I can run my SGS stable at 1540 MHz with glitch kernel in MIUI 1.5.20 ROM.
Total stability in a 48 hours stress test.
Enviado desde mi GT-I9000 usando XDA Premium App

Mine is stable at 1.5 Ghz with a 200mv undervolt, but only if I select it as a single frequency.
For multiple frequencies, I was stable at 1.4Ghz on an earlier kernel, but it's slightly unstable now... I'll probably try tweaking the governor.
I'm on a i9000m using tk-glitch's V9D-VC and CM7 #11 build.
By the way, shouldn't this thread be in general?

I am on MIUI v3 and CM7_SGSMTD_platypus-kernel_20110522_r0_quorra-prer11_test4-r2 kernel.
I don't use undervolt settings and 1.2 Ghz is fine for me; above values generally don't work stable.
By the way, 1.2 ghz is almost enough for all games and operations, I did not run into that pushing apps for high oc's.
Regards.

1.44GHz, extremely smooth and stable!

Never seen an option to go above 1.54, but 1.54 works flawlessly so I've chosen 1.5 in the poll. (16gb i9000)

1.3-1.4 GHz tkglitch kernel Miui v3
Sent from my GT-I9000 using XDA Premium App

It's not the ROm it's the KERNEL who can oc, i adviise using XAN, hardcore kernels in 2.2. or gto's ginger kernel at 2.3 they are stable and 1280 i guess it's the limit not to warm up
But a questin what send me an undervoltage config, to 1300 if the gpu games work for someone at 1300mhz
.
fstluxe said:
Which voltage are you using?
Mine seems to freeze on voltages above the 1.3V,
above the 1.2 GHZ always freezes. I,m using darkeys 9.5 Rom.
someone some advice which rom is the best for OC, (just for benchmarking) for once.
Click to expand...
Click to collapse

Is oc risky?

Thinking if overclocking my captivate to 1.6 but will it shorten the like time significantly.
Samsung captivate
glitch kernel
cyanogenmod 7 #57
UV

Jusrertiner said:
Thinking if overclocking my captivate to 1.6 but will it shorten the like time significantly.
Samsung captivate
glitch kernel
cyanogenmod 7 #57
UV
Click to expand...
Click to collapse
What is your desire to oc?
Sent from my Captivate using XDA Premium

Very risky
Very.

Yes it will shorten the life on your phone no way to know how much though. unless you are into it and read a fair amount about it i would not oc. The benefits just are not that significant
Sent from my GT-I9000 using XDA App

start at 1.2 if your scared

It will not shorten the life to the extent that it will not last the update period
Miui Captivate

Oh well how long do u think it will last. N I want it for the extra speed in games mostly.
Samsung captivate
glitch kernel
cyanogenmod 7 #57
OC and UV

If you want some extra speed, still to 1.2 and below and try using Pimp My CPU to drop the voltage -50mV across the board (try messing around with it more to get more drops without charge deaths and etc). By doing this, I am running mine currently at 1.2 ghz with a -100mV voltage drop, which is the same as stock 1.0 ghz voltage level.
It's overvolting that kills a processor, not overclocking. More voltage means more power for the processor to dissipate as heat and some components are not spec'd to take more voltage than stock.
I hope this helps.

I have read that you should be safe up to 1300mv(not mhz). Usually 1200 mhz will run that. After 1300mv, you risk damage. It also can cause charging issues (phone uses more battery than it is charging).
Don't get me wrong, at one point I had my phone up to 1500 mhz, just to check kernel stability. Didn't stay there. Also remember that each phone is different when it comes to this. Some phones tolerate it better than others. That is why entered no definitive guide to it, only recommendations.

You shouldn't be scared to OC. but its your phones processor because everyones is different. My captivate can only get up to. 1.5. Then it freezes up. My inspire 4g can get up to 1.9 without a problem while others can only get to 1.6 or so. So try it out
Sent from my Inspire 4G using XDA Premium App

I overclocked to ,1.3 and my while screen turn purple and green n I had to pull battery. Is that a crash?
Samsung captivate
glitch kernel
cyanogenmod 7 #57
OC and UV

[Q] Fastest Captivate 2.3 Rom?

Which of the current 2.3 ROMs is considered the fastest/most responsive? Or which ROM would be considered the fastest based on the mods & tweaks used by the developers? I'm not to versed in the technical side of things to discern which tweaks/mods/kernels/etc give way to the most stability, speed, and response and would like the community's opinions on the matter.

Probably CM7, I just started using it and there is never any lag. I haven't even OC'd it yet. This also comes with the price of having to live off a wall charger though.
Sent from my SGH-I897 using XDA App

If you mean fastest in clock speeds, then thats a balance betwen rawr clock and how much battery life you can get out of it. Keep in mind these phones clock easily 1.2ghz-1.3ghz no issues past that you need to increase the voltage. So you can in theory get 1.6ghz-1.8ghz but you will live next to a charger. If you mean fastest on how it feels Id have to say Continuum moved awesome few months back (haven't used it in a while) Atomic Fusion if the ext4 version comes out. But there you should just test them out.
On a side not if you want to OC your phone and not have to pay for the oc app, then Id suggest you stick to I9000 ports or AOSP's like CM7 or MIUI. Native roms like Cognition 5, Atomic Fusion and Nuclear Fusion need Tegrak for OC/UV.

Which of the I9000s seem to run the fastest/smoothest? I've been looking at Dlev and Darky but how does Apex/Symply GS II/Mosaic/Sensation compare?

prbassplayer said:
Keep in mind these phones clock easily 1.2ghz-1.3ghz no issues past that you need to increase the voltage. So you can in theory get 1.6ghz-1.8ghz but you will live next to a charger.
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Click to collapse
I actually read in the Glitch kernel thread that when overclocking, higher voltages doesn't always mean more stability. I'm OC'd at 1.5ghz right now really stable and I was UV'd at -50mv but I just dropped it to -75mv to see if its stable there. I'll keep dropping it till I have issues.
Oh yeah, and CM7's battery life has got WAY better over time, so I'm not having to worry about charging all the time either.
Sent from my Samsung Galaxy S Captivate

Reamer09 said:
I actually read in the Glitch kernel thread that when overclocking, higher voltages doesn't always mean more stability. I'm OC'd at 1.5ghz right now really stable and I was UV'd at -50mv but I just dropped it to -75mv to see if its stable there. I'll keep dropping it till I have issues.
Oh yeah, and CM7's battery life has got WAY better over time, so I'm not having to worry about charging all the time either.
Sent from my Samsung Galaxy S Captivate
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Click to collapse
From my experience to maintain a stable phone i over volt the "step" that's overclocked, and then undervolt the other "steps". Im by no means a expert nor is there a full proof way to do it. Each phone kinda reacts differently on the overclocking past 1.2-1.3ghz.

Which of the I9000 roms should theoretically run faster due to the tweaks/mods used by the developers without the need to overclock?

There if no need to overclock for daily use. Only if you are playing very demanding games. And only during those games.
As for fastest rom....have a search this question gets asked a lot with always the same answer and result:
There is no best rom, all phones are different as well as tastes, what's best for me on my device may not be on yours. Flash and try a few and make you own decision...

CM7 is fastest but Display and Sound quality is not as good as stock ROM .

Before school started for me and i couldnt access a charger when i wanted to, i used MIUI at a stable 1.6 GHz ALL of the time with odemand govenor and i got like 18 hours with moderate use, on Glitch V12! And you dont need to overvolt for higher speeds i have tested it and its better to undervolt higher clocks, i get better battery and performance!
Sent from my Stock KH3/4 2.3.4 Captivate using the XDA Premium App!

For the 10th time Each phone reacts differently to Overclocking. There is no sure way to get it OC/Uv. On my phone past 1.2ghz i need to over volt.

prbassplayer said:
For the 10th time Each phone reacts differently to Overclocking. There is no sure way to get it OC/Uv. On my phone past 1.2ghz i need to over volt.
Click to expand...
Click to collapse
Well i ran 1.6 GHz undervolted at ever clock speed fine, had better performance than over volting, so its different
Sent from my Stock KH3/4 2.3.4 Captivate using the XDA Premium App!

Gpu oc

Is there any gpu overclocking app for captivate.
Sent from my SAMSUNG-SGH-I897 using XDA App

Not for the stock kernel. You would need to change to a different kernel that supports overclocking.

No, there is not a way to oc the gpu, just the cpu.

studacris said:
No, there is not a way to oc the gpu, just the cpu.
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Click to collapse
Good call, I need to read more carefully....

Doesn't MIUI allow this with glitch? or is it that glitch has the gpu already oc'd by default... Dont remember

prbassplayer said:
Doesn't MIUI allow this with glitch? or is it that glitch has the gpu already oc'd by default... Dont remember
Click to expand...
Click to collapse
I'm far from an OC expert, but kernels supporting Live OC allow you to OC the bus, which affects RAM and GPU. However, I thought that it was really just increasing RAM speeds, which in turn helped the GPU a bit since it uses the same RAM. That's why if you overclock the BUS you start getting visual artifacts: because the data was getting corrupted in RAM on it's way to the GPU.
Or I'm out in left field, which is never out of the realm of possibility.

I have no clue. I just remember reading something on glitch v13 on gpu oc and MIUI. Never tried it, don't know the theory. Was just asking couse i remember reading it xD
Sent from my ICS powered Captivate using Tapatalk

Yes there is GPU OC on Glitch kernel for GB!

b-eock said:
Yes there is GPU OC on Glitch kernel for GB!
Click to expand...
Click to collapse
I figured it was only a matter of time before you wandered in here and set us straight. Thanks!

Was that meant in a good or bad way, cuz I am only sharing my knowledge with yall, you should be happy I am!

How do you know which kernel supports OC CPU \ GPU?
Also, I guess there are some apps which let you OC your CPU \ GPU, aren't they independent of the kernel? (I might be completely off-track here, but I had to ask)
I recently flashed OneCosmic's ICS ROM and Nushor's kernel (v3189) to my Captivate.

ScoobyDoo83 said:
How do you know which kernel supports OC CPU \ GPU?
Also, I guess there are some apps which let you OC your CPU \ GPU, aren't they independent of the kernel? (I might be completely off-track here, but I had to ask)
I recently flashed OneCosmic's ICS ROM and Nushor's kernel (v3189) to my Captivate.
Click to expand...
Click to collapse
A custom kernel is required to OC anything. GPU over clock that is user control able requires a kernel that supports live OC.
Sent from my Nexus S using Tapatalk

I think chain fire 3d is your only option with regard to enhancing/modifying GPU. I highly recommend using it if you like to play the "3d" games without lag
Sent from my I897 using xda premium