[nick w]

Warez = Awesome
Thanks!

[mentat]

Greetings,

I just wanted to add my thanks to all for sharing their settings and results.

The following settings (appended to the end of config.txt) have been working very well for me.

Code:

arm_freq=1300
gpu_freq=500
core_freq=500
sdram_freq=580
over_voltage=4
over_voltage_sdram=5
sdram_schmoo=0x02000020

dtparam=sd_overclock=100

disable_splash=1
disable_overscan=1
hdmi_force_hotplug=1

I am using a plastic enclosure with some ventilation and heat sinks on the CPU/GPU and USB/Ethernet chips (core temperature remains below 70 degrees celsius).

Thanks.

[doldi]

Thank you warez for this config.

... core temp on RPI3 is under 60°C with a glued, large heat sink on SoC-Broadcom BCM2837.

[Warez]

Here the overclock addon we made for the Pi2&3
https://github.com/XvBMC/repository.xvbm...c-3.00.zip

[the_jaguar]

Here the overclock addon we made for the Pi2&3
https://github.com/XvBMC/repository.xvbm...c-3.00.zip

I was not able to install it due to a dependency issue on the latest milhouse build (0611).

[Warez]

Here the overclock addon we made for the Pi2&3
https://github.com/XvBMC/repository.xvbm...c-3.00.zip

I was not able to install it due to a dependency issue on the latest milhouse build (0611).

instal from repo: https://github.com/XvBMC/repository.xvbm...-3.0.1.zip

[mentat]

Greetings RPi3 Overclockers,

I have a question regarding the following (config.txt) parameters (used to overclock the SD card interface)?

dtoverlay=sdhost,overclock_50=100
dtparam=sd_overclock=100

Are both of these directives required, and if not, which one (should I use)?

Thanks.

[popcornmix]

Are both of these directives required, and if not, which one (should I use)?

Code:

dtparam=sd_overclock=100

is the preferred notation. You can remove the other one.

[mentat]

Are both of these directives required, and if not, which one (should I use)?

Code:

dtparam=sd_overclock=100

is the preferred notation. You can remove the other one.

popcornmix,

As always, your knowledge and assistance are greatly appreciated.

Thanks.

[nickrob84]

Is there a noobs guide to safety overclocking a RPi3 running LibreELEC?

[popcornmix]

Is there a noobs guide to safety overclocking a RPi3 running LibreELEC?

The safe option is to leave it at stock. Pi3 doesn't really need overclocking.
If you want to experiment, then back up first (or use a fresh install you don't mind breaking).
Overclocking may involve many crashes while you find the best settings your Pi can handle
(no guarantee that someone else's settings will work on your Pi - yours may be better or worse).

[DaveJr]

I'm a little confused about the 'gpu_freq' setting I see see mentioned. I don't see that in mine, only 'gpu_mem'.
Here is my config.txt:



################################################################################
# This file is part of LibreELEC - https://libreelec.tv
# Copyright © 2016 LibreELEC Team
#
# Inspired and partly copied from:
# http://tinyurl.com/gvx7v95 © 2009-2014 Stephan Raue
# http://youresuchageek.blogspot.fr/2012/0...ec-on.html
#
# LibreELEC is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# LibreELEC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LibreELEC. If not, see <http://www.gnu.org/licenses/>.
################################################################################
# Bootloader configuration - config.txt
################################################################################

################################################################################
# Memory (System/GPU configuration )
################################################################################

# default GPU memory split (do not change if you do not know what you are doing)
gpu_mem=350

# SDRAM size based GPU memory split, uncomment and setup to override 'gpu_mem'
gpu_mem_256=128
gpu_mem_512=160
gpu_mem_1024=350

################################################################################
# Overclocking settings
# WARNING: Do not change/enable if you do not know what you are doing!
# The System may become unstable or you can have data corruption or
# you can loose your warranty if you set wrong settings
#
# please read: http://elinux.org/RPi_config.txt#Overclo...figuration
################################################################################

# Overclock mode settings.
#
# default recommended values are: arm_freq | core_freq | sdram_freq | over_voltage
# no overclocking : 700 | 250 | 400 | 0
# mode 'Modest' : 800 | 300 | 400 | 0
# mode 'Medium' : 900 | 333 | 450 | 2
# mode 'High' : 950 | 450 | 450 | 6
# mode 'Turbo' : 1000 | 500 | 600 | 6
# mode 'Pi2' : 1000 | 500 | 500 | 2
# mode 'Pi3' : 1300 | 500 | 500 | 4

arm_freq=1300
core_freq=500
sdram_freq=500
over_voltage=4

# set to 'force_turbo=1' to disable dynamic overclocking (you can lose your warranty!)
force_turbo=0

# If you have any data corruption using Turbo Mode and overclocking
# try with this setting uncommented
# If this still fails, try to use Medium mode without "over_voltage=2"
# If it ultimately keeps failing, forget about this until it gets fixed
# Use a more conservative mode that will works fine in any cases:
# initial_turbo=30

################################################################################
# Overscan settings
################################################################################

# Make display smaller to stop text spilling off the screen
# see also http://www.raspberrypi.org/phpBB3/viewto...67&t=15700
# overscan_scale=1
disable_overscan=0

# Adapt overscan values to your needs
# overscan_left=57
# overscan_right=59
# overscan_top=20
# overscan_bottom=20

################################################################################
# various settings see also: http://elinux.org/RPi_config.txt
################################################################################

# Force HDMI even if unplugged or powered off
hdmi_force_hotplug=0

# Doesn't sent initial active source message.
# Avoids bringing CEC (enabled TV) out of standby and channel switch when
# rebooting.
hdmi_ignore_cec_init=0

################################################################################
# License keys to enable GPU hardware decoding for various codecs
# to obtain keys visit the shop at http://www.raspberrypi.com
################################################################################

# decode_MPG2=0x00000000
# decode_WVC1=0x00000000
# decode_DTS=0x00000000
# decode_DDP=0x00000000

################################################################################
# End of default configuration
# all values below this line were inserted from config.txt.bk (your old config)
# and can be merged with the above values
################################################################################
avoid_pwm_pll=1
dtoverlay=sdhost,overclock_50=63
config_hdmi_boost=0
isp_freq=0
hdmi_ignore_cec=0
hdmi_pixel_encoding=0
disable_splash=0
max_usb_current=0

[popcornmix]

I'm a little confused about the 'gpu_freq' setting I see see mentioned. I don't see that in mine, only 'gpu_mem'.

gpu_freq is just a shorthand that will set all of core_freq, h264_freq, isp_freq, v3d_freq if they are otherwise unset.

avoid_pwm_pll=1
config_hdmi_boost=0
isp_freq=0
hdmi_ignore_cec=0
hdmi_pixel_encoding=0
disable_splash=0
max_usb_current=0

All of these can be removed without changing behaviour.
avoid_pwm_pll has been removed (always defaults to 1)
max_usb_current has been removed (always defaults to 1)

The others are just defaults (most settings treat zero a default).

[DaveJr]

Thank you popcornmix. I just noticed the elinux.org links contained in my file have a wealth of info.