[KERNEL] Clemsyn's Elite Kernel: Pushing the Limits of Nexus 7. Now with 700mhz GPU.

JohnCorleone · Aug 27, 2012

simms22 said:
no, not upping voltages. they are EXTREMELY high as they are. i would have liked to lower them, but none of the apps i tried actually lowered them. and yes, i was in a well air conditioned room . 1.9 is very manageable, even almost stable. 2ghz has to be treated very delicately to get to run, let the device just sit there for a good 5-10 minutes before adjusting it to 2ghz, so whayever boot up process finish running. i watched my cpu %, when it went down to 0 is when i cranked it up.

OK I went nuts and cranked it straight to the max as soon as it booted. I am going to give it another go because 1.9 seemed good. Thanks for the tips. I will get the air conditioner fired up too..

Sent from my Nexus 7 using Xparent SkyBlue Tapatalk 2

CharliesTheMan · Aug 27, 2012

JohnCorleone said:
Could not hang at 2.0+....is Simms upping voltages and testing in front of air conditioner like normal. 1.9 seems manageable. If I get the OK to raise voltages I will give it another go but had a heck of a time getting recovery back for some strange reason. Had to flash another kernel through Flash Image GUI app....ooh. irc ...be there in a bit

Sent from my Galaxy Nexus using Xparent SkyBlue Tapatalk 2

I had the same problem with booting to recover with the 2.0 kernel. It seemed that before recovery opened the screen flashed and rebooted to system, almost like recovery ramping up the CPU caused a reboot before recovery opened.

I could boot fine so I took advantage of the negative and copied storage the flashed stock and put my data back and then started over clean.

Flashing the kernel would have worked but I didn't try that GUI program and knew formatting clean wasn't a bad idea anyway, but your way was easier. Just wanted to let you know I had exactly the same problem.

Sent from my ADR6425LVW using xda premium

JohnCorleone · Aug 27, 2012

I thought I had the top and someone messaged me as soon as Simms broke 8

Sent from my Nexus 7 using Xparent SkyBlue Tapatalk 2

JohnCorleone · Aug 27, 2012

CharliesTheMan said:
I had the same problem with booting to recover with the 2.0 kernel. It seemed that before recovery opened the screen flashed and rebooted to system, almost like recovery ramping up the CPU caused a reboot before recovery opened.

I could boot fine so I took advantage of the negative and copied storage the flashed stock and put my data back and then started over clean.

Flashing the kernel would have worked but I didn't try that GUI program and knew formatting clean wasn't a bad idea anyway, but your way was easier. Just wanted to let you know I had exactly the same problem.

Sent from my ADR6425LVW using xda premium

Yup we had the exact same thing happen. Right when it was going to go to recovery, it low flickered "Google" and just booted back up. Meh I know its savable. I am not done

Sent from my Nexus 7 using Xparent SkyBlue Tapatalk 2

simms22 · Aug 27, 2012

if anything, force reboot the device. then go into the bootloader, plug in via usb, and choose recovery. if it wont let you choose, unplug and force reboot again. then go into tbe bootloader, plug in, and try again

demandarin · Aug 27, 2012

JohnCorleone said:
I will give it another go but had a heck of a time getting recovery back for some strange reason. Had to flash another kernel through Flash Image GUI app....ooh. irc ...be there in a bit

Sent from my Galaxy Nexus using Xparent SkyBlue Tapatalk 2

Cleymson might want to have a deeper look into this. I had what you described happen twice. Days/week apart or so. The kernel was so extreme it crashed my device. Then I wouldn't get past boot up animation. First time I had to use toolkit and I restored a backup. I was unable to get into recvoery without toolkit. Then everything was good. Days/week later I try latest version at that time. Then same thing happens..lol. it crashed while I was benching. Then it kept on bootlooping. Unable to get I to recovery on the tablet itself. I had to use toolkit again. This time I used it to put tablet in recovery and then I just flashed motley kernel. Them device booted up fine. I think what happens is, when it crashes, temps go sky high. Then when it reboots, it keeps trying to bootup with extremely high temps. Therefore it'll either bootloop or stay on boot animation screen. Flashing anotjer kernel cleared it and brings temps back down to normal.

Like others said, not all devices can handle the same extreme gpu & CPU overclock. So be prepared to have to use toolkit or use recoverynif something goes bad. Comes with the territory with extreme testing. Some will handle it fine. Others will get stuck like me n others did..lol

TIP I LEARNED THE HARD WAY: don't bench this extreme kernel with volume all the way up. Or be careful in games at extreme speed. I crashed while playing nova3. Sound crashed also and made extremely loud noise that looped. It blew my speakers or now they sound all distorted and like crap..lmfao. just a f.y.I. so it doesn't happen to someone else. I think it was when I was testing the extreme undervolted version. So it doesn't even need to be at super high speed to crash n case issue. Just know what you getting into

this kernel not for the weak hearted or someone who doesn't know how to use other methods to get I to recovery if needed. ADVANCED users only.

willis936 · Aug 27, 2012

droyd4life said:
So I'm running the stock rom with the 1.8Ghz/ 650 GPU kernel. Scoring 5200 in quadrant, 69.8 FPS in nenamark. Ran Nova 3 perfectly smooth. How are people hitting 8000 on quadrant?

The lower scores are not a result of a lower clock rate but of temperature throttling. If the hardware gets too hot it will crash, to prevent this the system will slow things down when it's nearing the point of instability. As any seasoned overclocker will tell you: if you want to go faster you must go cooler.

droyd4life · Aug 27, 2012

willis936 said:
The lower scores are not a result of a lower clock rate but of temperature throttling. If the hardware gets too hot it will crash, to prevent this the system will slow things down when it's nearing the point of instability. As any seasoned overclocker will tell you: if you want to go faster you must go cooler.

Thanks, been reading a lot here and seems like I need to change governors, get cooling and turn off fsync (whatever that is) to get better scores. Will turning off fsync actually give better real life performance? Also, I realized that the default browser in the glazed rom destroys chrome

looks like were going to need water cooling in our phones and tablets soon LOL.

simms22 · Aug 27, 2012

a few more benchmarks at 2ghz and a time in state of 1900/1900 and 2000/2000..

farmerbb · Aug 27, 2012

Congrats guys, you just made the front page of Engadget

Google Nexus 7 overclocked to 2GHz, punches well above its weight

nory82688 · Aug 27, 2012

Can't wait until the rest of us can try out this 2ghz kernel. #excited

On another note , the 1.8ghz 650gpu kernel is running great maxed out

Sent from my Nexus 7 using xda premium

boynamedstacy · Aug 27, 2012

Been running 2.0GHz for two days now without reboot. That is until I floor it and run a couple bench tests. Still looking for a solid rom to help reach the illusive 8000's

Sent from my SCH-I535

JohnCorleone · Aug 27, 2012

boynamedstacy said:
Been running 2.0GHz for two days now without reboot. That is until I floor it and run a couple bench tests. Still looking for a solid rom to help reach the illusive 8000's

Sent from my SCH-I535

The bench tests are what keep it running at max freq the whole time. Simms and I test a little differently. I set my min and max (say 51/1900) but I use on demand and deadline
like I do in my daily use which isn't a true stability test. Running it wide open (2000/2000 performance is the way to find out if it is truly "stable" for daily use. Also videos and games are another good way to push the device because they make it get warm and use lots of juice. The funny thing about the 1800 650 GPU was I completely forgot I had it set there. I was just using the thing and noticed higher battery drain with screen on so I checked. There may be some 1850 max CPU with like a 550 (/probably still too high) that people could get away with using. . I went crazy and bought an unlocked quad core S3, Evo LTE (2) and this so I am willing to push this the most because its the cheapest to replace. Trying to resist the unlocked quad core 1.5 all black One X I can get tomorrow. I am starting to get loopy from maintaining all of these devices...

Sent from my Nexus 7 using Xparent SkyBlue Tapatalk 2

nory82688 · Aug 27, 2012

boynamedstacy said:
Been running 2.0GHz for two days now without reboot. That is until I floor it and run a couple bench tests. Still looking for a solid rom to help reach the illusive 8000's

Sent from my SCH-I535

Seriously guys? How the hell did you get the kernel?

Sent from my Nexus 7 using xda premium

ihateu3 · Aug 27, 2012

Engadget

You made the front page on Engadget with your work, good job!

http://www.engadget.com/2012/08/27/google-nexus-7-overclocked-to-2ghz/

willis936 · Aug 27, 2012

Wow well done.

Another thing to try if you're getting less than stellar scores is to turn on force GPU rendering in developer options.

clemsyn · Aug 27, 2012

ihateu3 said:
You made the front page on Engadget with your work, good job!

http://www.engadget.com/2012/08/27/google-nexus-7-overclocked-to-2ghz/

Thanks for the link. I think they also need to give credit to _motley in the post in which this kernel is based. This would not have been possible without his kernel

BTW, will try to fine tune the 2.0ghz more and see what we can do but I believe we have hit the ceiling

modstorm · Aug 27, 2012

Sadly I couldn't get mine to run at 2GHz

Highest i was able to go was 1.9GHz however I couldn't get quadrant to run :/ As soon as I max out 2GHz my Nexus shut's down. I also tried increasing the voltages (1.9 and 2GHz) by 50Mv with no difference. Hope one day I will be able to run 2GHz

t_007_v2 · Aug 27, 2012

clemsyn said:
Thanks for the link. I think they also need to give credit to _motley in the post in which this kernel is based. This would not have been possible without his kernel

BTW, will try to fine tune the 2.0ghz more and see what we can do but I believe we have hit the ceiling

motley deserves more credit than he is getting. without his initial work none of this would have been possible.

motley

xguntherc · Aug 27, 2012

clemsyn said:
Thanks for the link. I think they also need to give credit to _motley in the post in which this kernel is based. This would not have been possible without his kernel

BTW, will try to fine tune the 2.0ghz more and see what we can do but I believe we have hit the ceiling

Hey clemsyn, I'll be sure and update the article and mention Motley made this all possible. Oh and for those wondering, the Engadget story you can thank clemsyn, Simms, and I for that. Because that all started with mee!
http://androidcommunity.com/nexus-7-quad-core-overclocked-to-2-0-ghz-shatters-benchmarks-20120825/

Oh and you made the SlashGear front page too

http://www.slashgear.com/nexus-7-2ghz-overclock-delivers-benchmark-crushing-tablet-27243969/

[KERNEL] Clemsyn's Elite Kernel: Pushing the Limits of Nexus 7. Now with 700mhz GPU.

Senior Member

Senior Member

Senior Member

Attachments

Senior Member

Recognized Contributor - R.I.P

Senior Member

Senior Member

Senior Member

Recognized Contributor - R.I.P

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Similar threads

Top Liked Posts