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2014-08-01, 11:46
(This post was last modified: 2014-08-01, 11:49 by MediaPi.)
Have a look at fammar post 20. That is what I'm running except I need to add over voltage sdram =4. You would notice a lot at these speed. But it does depend, some won't. I would see that as your target and try to get closer to it. I can get all my PiS to get to that.
Basically he's increased arm from 1000 to 1100
Increased core from 500 to 550, he also separated
the core frequency to the other GPU frequency.
And lastly he's increased ram from 500 to 600.
All these translate to what I call super turbo settings lol
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Thanks for your message. You mean post #18? So, I should try:
force_turbo=1
gpu_mem=256
disable_overscan=1
arm_freq=1100
core_freq=550
sdram_freq=600
over_voltage=8
avoid_pwm_pll=1
temp_limit=80
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1
And if it does not work well, then also add
over voltage sdram =4
No "_" required for the added one?
Does hdmi_ignore_cec_init disables CEC? I am using it for my remote, so could not do that?
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Milhouse
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You need the underscores.
Not sure why people are setting a lower temp_limit, that's only going to throttle the CPU sooner than it otherwise would do (85C) and some of these overclock settings, particularly the increased voltages, are going to make the Pi run hotter (but not to the point where it will be damaged).
If you're using CEC leave out the hdmi_ignore_cec_init setting.
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Milhouse
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My bad, thanks for the correction.
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over_voltage_sdram=4
And take out the temp limit as millhouse has mentioned
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Thanks so much. To sum it up, let me try below:
force_turbo=1
gpu_mem=256
disable_overscan=1
arm_freq=1100
core_freq=550
sdram_freq=600
over_voltage=8
over_voltage_sdram=4
avoid_pwm_pll=1
hdmi_force_hotplug=1
hdmi_ignore_cec_init=1
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Quick question - Are you guys running these overclocks with heatsinks added to the Pi ?? Mine's already stable at 900MHZ, and I fancy pushing it further, but the heat issue kinda bothers me. Currently its around 145F which is around 63C. Also it's in a case which doesn't really give it that much ventilation.
Guess I'm really looking for some reassurance that I won't break it - wife would definitely be displeased, to put it mildly !!!
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Milhouse
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You don't need heatsinks, they'll be pretty ineffective at best.
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Ice gotten to 61 no problem with these over clock.
Steve yes try those and report back.
Black eagle you must be in a hot climate because your not pushing the SOC that much at all at 900 MHz. 1000 is easily obtainable for majority of PiS. Going from 900 to 1000 would see a nice increase