Hi,
I just wondered what the best overclock etc settings are for the Pi 2
This config.txt results in a working Pi 2:
decode_MPG2=0x00000000
decode_WVC1=0x00000000
arm_freq=850
core_freq=375
gpu_mem_256=112
gpu_mem_512=144
hdmi_ignore_cec_init=1
disable_overscan=1
start_x=1
This one from my very stable B+ does not:
arm_freq=1000
core_freq=500
sdram_freq=600
over_voltage=6
gpu_mem=256
decode_MPG2=0x00000000
decode_WVC1=0x00000000
disable_overscan=1
hdmi_ignore_cec_init=1
start_x=1
The second config results in the Pi 2 locking up on boot.
What are the best config.txt.options for the Pi B+ 2?
Cheers
Spart
There is no guarantee that any 2 pi’s (a/b/b+/2 no matter) will support the same clock settings. Back down the overclock.
For others that might be interested in what has been done successfully with the Pi B+ 2
http://forum.kodi.tv/showthread.php?tid=217170
This config seems to be stable for me. Others have pushed further. Millhouses’s excellent bcmstat script can shine a bit of light on what’s going on. GitHub - MilhouseVH/bcmstat: Simple Raspberry Pi monitoring tool
arm_freq=1000
core_freq=500
sdram_freq=500
over_voltage=2
gpu_mem=256
decode_MPG2=0x00000000
decode_WVC1=0x00000000
force_turbo=1
hdmi_ignore_cec_init=1
disable_overscan=1
start_x=1
osmc@osmc:~$ ./bcmstat.sh
Config: v0.2.0, args “”, priority lowest (+19)
CPU: 4 x ARMv7 cores available, using ondemand governor
Memory: 1008MB (split 752MB ARM, 256MB GPU)
HW Block: | ARM | Core | H264 | SDRAM |
Min Freq: | 1000MHz | 500MHz | 0MHz | 500MHz |
Max Freq: | 1000MHz | 500MHz | 250MHz | 500MHz |
Voltages: | +2, 1.3625V | 0, 1.2000V |
Other: temp_limit=85, force_turbo=1
Firmware: Jan 30 2015 18:25:11, version d6e004c61a7a749897c482c860d0b2c28196437e (clean) (release)
Codecs: H264 WVC1 MPG2 VP8 VORBIS MJPG
Booted: Sat Feb 14 20:11:36 2015
Time ARM Core H264 Core Temp (Max) IRQ/s RX B/s TX B/s
======== ======= ======= ======= =============== ====== ========== ==========
20:16:36 1000Mhz 500Mhz 0Mhz 48.15C (48.15C) 921 4,039 13,722
20:16:38 1000Mhz 500Mhz 0Mhz 47.62C (48.15C) 759 290 280
20:16:40 1000Mhz 500Mhz 0Mhz 47.62C (48.15C) 761 357 670
20:16:42 999Mhz 500Mhz 0Mhz 47.08C (48.15C) 760 297 401
20:16:44 1000Mhz 500Mhz 0Mhz 47.62C (48.15C) 756 73 179
20:16:46 1000Mhz 500Mhz 0Mhz 47.62C (48.15C) 755 47 96
20:16:48 1000Mhz 500Mhz 0Mhz 48.15C (48.15C) 756 259 154
I am having some issues with bluray playback. Even with stock settings. Need to investigate further as to maybe menu settings need looking at which are pretty standard at present.
Hope this helps others.
Cheers
Spart
I guess this topic should be moved to the Raspberry PI section.
Nevertheless nice info 
Already saw the thread on the kodi forum, but haven’t tried OC yet, not really needed yet 
The Raspberry Pi 2 doesn’t seem to overclock as much as the Pi 1 - at least not in number terms.
Both my B and B+ can run at arm 1000, core 500, sdram 550 with 6 overvolt.
However my Pi 2 is unstable at arm 1000, core 500, sdram 500 with 2 overvolt. (The standard “turbo” preset) After a random time between minutes and hours it will freeze.
At the normal preset (arm 900, core 450, sdram 450, overvoltage 0) it is fine.
Keep in mind that a Pi 2 is MUCH faster than a Pi 1, even at equal clock speeds, so I don’t mind running it at the Normal overclock.
(Performance per core for the same clock frequency for a single thread is about 1.5x - 1.8x, and if the software is multi-threaded potentially up to 4x on top of that, although Kodi doesn’t really make good use of 4 cores unless you are transcoding multichannel audio…)