Jump to content
HWBOT Community Forums
Massman

Raspberry Pi Overclocking Guide – Cheap, Fun, and Overclockable (with HWBOT Prime)

Recommended Posts

I'm gonna update the article with some information on 3D benching and influence of PSU.

Share this post


Link to post
Share on other sites

Awesome guide!

And yes, the JDK8 1.8.0-ea-b100 is very good on ARM devices. I think it is because of the VFP support.

 

On my ODROID-U2 (4x ARM Cortex-A9 @2,0) I got a score of 2419,06 with Ubuntu 13.04

But the CPU needs to be added to the database before I can submit, so just a link for the time being:

yxIJ7NOl.jpg

Share this post


Link to post
Share on other sites

Awesome, is that Linux on your Galaxy Note?

 

//edit: just figured out it's an Odroid Hardkernel. Nice. Couldn't help myself and just bought one as well :D

Edited by Massman

Share this post


Link to post
Share on other sites

I have been playing quite alot with it now. Still having a hard time getting Java 1.8 to work on Arch linux

Just ordered 2 more units after I found this person: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=51119&p=395436

 

running 1400mhz arm_core

 

My first unit are having problems with higher than 1165 mhz arm_core and that only gives me 540 points

Share this post


Link to post
Share on other sites

Until I see benchmark results, I call BS on all those rediculous RPi OC results. There was a guy at OCN claiming 5GHz on ln2 too, but obviously tha's BS too.

 

So far, most cap out at 1200-1250 on air cooling with overvoltage=8.

Share this post


Link to post
Share on other sites
I have been playing quite alot with it now. Still having a hard time getting Java 1.8 to work on Arch linux

Just ordered 2 more units after I found this person: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=51119&p=395436

 

running 1400mhz arm_core

 

My first unit are having problems with higher than 1165 mhz arm_core and that only gives me 540 points

 

Hey, I get it working like this:

 

 

pacman -S vim

(I'm used to working with vim to write/edit txt files)

 

wget http://www.java.net/download/jdk8/archive/b100/binaries/jdk-8-ea-b100-linux-arm-vfp-hflt-24_jul_2013.tar.gz

(or go to the oracle java 8 website and download from there)

 

tar -xzf jdk-8-ea-b100-linux-arm-vfp-hflt-24_jul_2013.tar.gz -C /opt

 

export PATH=$PATH:/opt/jdk1.8.0/bin

(link Java to system variables, you have to do it each time you reboot)

 

java -version

(check if Java is working)

 

wget http://downloads.hwbot.org/hwbotprime.jar

 

java -jar hwbotprime.jar

Share this post


Link to post
Share on other sites

 

export PATH=$PATH:/opt/jdk1.8.0/bin

(link Java to system variables, you have to do it each time you reboot)

 

Set this in ~/.bash_profile and you don't have to type it after reboot.

 

echo "export PATH=$PATH:/opt/jdk1.8.0/bin" >> ~/.bash_profile

Share this post


Link to post
Share on other sites

@Massman

The Odroid-U2 is indeed an awesome little thingie, with a lot of performance and only consuming max. 10W! I haven't figured out how to 'OC' it beyond 2GHz.

Hardkernel now also has an ODROID-XU with Samsung Exynos5 Octa big.little design (4x Cortex-A15 @1.6Ghz + 4x Cortex-A7 @1.2Ghz). It starts shipping in September and is now $149 pre-order. Unfortunately you can only use 4 cores at the same time.

 

It would be interesting to see the performance differences between the ARM architectures (ARM6, Cortex -A7-A8-A9-A15)

Share this post


Link to post
Share on other sites

Got it working on my smartphone. First I tried Debian, but couldn't solve the java command symlink.

Although there was a symlink in /usr/bin, it was still reporting that there's not.

So I've installed the Raspbian.

Here's my first run: http://hwbot.org/submission/2412106_i.nfrar.ed_hwbot_prime_4x_arm1176_s_1360.94_primes_per_second

 

Phone is Lenovo A820 with Quad-core ARMv7 MT6589 chipset + SGX544MP video. What is the correct category to submit?

 

Unfortunately MTK-based phones can't be overclocked yet, so I'm stuck at 1.2GHz.

 

BTW, it's using 2 threads only, don't know why - maybe it's because I'm running it chrooted (as a slave OS).

 

root@infrared:/# java -jar hwbotprime.jar
java -jar hwbotprime.jar
No native cpu speed library for linux yet... falling back to OS tools.
--------- HWBOT Prime 0.8.3 ----------

Processor detected:
ARMv7 Processor rev 2 (v7l) MT6589
Estimating speed... 2x 1,209MHz @ 37.347 C
976 MB memory
Running benchmark using 2 threads.
Starting benchmark...
Warm up phase:   ..................................................................................................... done!
Benchmark phase: ..................................................................................................... done!
All done! Current CPU temperature: 37.971 C
Score: 1360.94.
Hit enter to compare online, enter a filename to save to file, or type q to quit.

Edited by I.nfraR.ed

Share this post


Link to post
Share on other sites

You and me both, hehe. At least I now found out how to read a kernel, and I think with the right guide I'll be able to "update" an existing one.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...