Overclocking Pi 2 - Printable Version +- Kodi Community Forum (https://forum.kodi.tv) +-- Forum: Support (https://forum.kodi.tv/forumdisplay.php?fid=33) +--- Forum: General Support (https://forum.kodi.tv/forumdisplay.php?fid=111) +---- Forum: Raspberry Pi (https://forum.kodi.tv/forumdisplay.php?fid=166) +---- Thread: Overclocking Pi 2 (/showthread.php?tid=217170) |
RE: Overclocking Pi 2 - ivota - 2015-07-25 I prepare Pi2 to overclock ( put heatsink and put cooler ) I tried this profile, but system freezes : arm_freq=1100 over_voltage=4 gpu_freq=500 sdram_freq=500 According this link (http://linuxonflash.blogspot.dk/2015/02/a-look-at-raspberry-pi-2-performance.html) I set: 1100 4 550 483 0 0 0 OK (multi-test) 944 1549 1.951s arm_freq=1100 over_voltage=4 core_freq=550 sdram_freq=483 over_voltage_sdram_p=0 over_voltage_sdram_i=0 over_voltage_sdram_c=0 gpu_mem=256 It seems ok, for now thes is no problem with OC. But,there is not set gpu_freq? gpu_freq= So What is gpu_freq If is not set in config. Thanks RE: Overclocking Pi 2 - popcornmix - 2015-07-25 (2015-07-25, 15:29)ivota Wrote: So What is gpu_freq If is not set in config. http://forum.kodi.tv/showthread.php?tid=231092&pid=2060374#pid2060374 RE: Overclocking Pi 2 - ivota - 2015-07-26 thank you @popcornmix I just used @Milhouse config. I remove cooler from my Pi2 ( too loud, noise, temp was 40C), now my Pi2 only have two heatsinks. Temp is around 58 C. Code: gpu_mem=320 It seems good for me. Here is bcmstat log. Code: OpenELEC:~ # bcmstat.sh RE: Overclocking Pi 2 - ivota - 2015-07-26 Code: gpu_mem=320 Code: Memory: 1008MB (split 752MB ARM, 256MB GPU) Is this OK, 256MB GPU? Re: RE: Overclocking Pi 2 - Milhouse - 2015-07-26 (2015-07-26, 10:45)ivota Wrote: bcmstat determines the GPU memory allocation from "vcgencmd get_mem gpu" so you must have another gpu_mem/gpu_mem_1024 setting in your config.txt that is overriding gpu_mem=320. The file is processed top-to-bottom so any later setting will be the one that is ultimately used. RE: Overclocking Pi 2 - Warez - 2015-07-26 Mlhouse to you see.... the sdram 450 as default.. and not 400? (pi2) RE: Overclocking Pi 2 - ivota - 2015-07-26 Here is small part of config.txt Code: ################################################################################ Thanks Re: RE: Overclocking Pi 2 - Milhouse - 2015-07-26 (2015-07-26, 12:29)Warez Wrote: Mlhouse to you see.... the sdram 450 as default.. and not 400? (pi2) The default sdram_freq on a Pi1 is 400. The default sdram_freq on a Pi2 is 450. Re: RE: Overclocking Pi 2 - Milhouse - 2015-07-26 (2015-07-26, 12:30)ivota Wrote: Here is small part of config.txt Set either gpu_mem OR gpu_mem_1024, but don't set both otherwise the last value set will be used (in your case, gpu_mem_1024). RE: Overclocking Pi 2 - ivota - 2015-07-26 Thank you @Milhouse Now is OK Code: OpenELEC:~ # bcmstat.sh RE: Overclocking Pi 2 - username145 - 2015-07-26 What would have the greatest effect on improving skin animation/smoothness? GPU clock? What about memory split, if fan art is minimal? RE: Overclocking Pi 2 - popcornmix - 2015-07-26 (2015-07-26, 15:48)username145 Wrote: What would have the greatest effect on improving skin animation/smoothness? GPU clock? What about memory split, if fan art is minimal? I'd guess sdcard speed, then arm, then core (for jpeg decode), then v3d, then sdram. RE: Overclocking Pi 2 - J_E_F_F - 2015-07-26 dumb question: do any of the overclock settings speed up the wired ethernet at all (ARM/CORE)? I'm not sure if that is controlled by the ARM CPU, Core bus etc. or has a separate controller. RE: Overclocking Pi 2 - popcornmix - 2015-07-27 (2015-07-26, 23:34)J_E_F_F Wrote: dumb question: do any of the overclock settings speed up the wired ethernet at all (ARM/CORE)? I'm not sure if that is controlled by the ARM CPU, Core bus etc. or has a separate controller. On a Pi1 overclocking the arm can improve network performance a little, as high cpu can limit the amount of data sent/received. On Pi2 that's rarely an issue, so no. You should be able to get close to 100Mbits/s over ethernet on Pi2 which is higher than the highest bitrate BluRays. RE: Overclocking Pi 2 - bertybassett - 2015-07-30 (2015-07-18, 20:12)Milhouse Wrote: So let me get this straight I load openelec 15 beta 3 and then just put Code: dtoverlay=sdhost,overclock_50=100 into config.txt and reboot? Of course it all depends on what speed my SD can overclock too. In advance thanks lads. |