Here you are:
arm_freq=3225
gpu_freq=1150
over_voltage_delta=50000
force_turbo=1
temp_limit=50
Posts by mirbg
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A bit more detailed photos about the entire process:
Some precautions for the surrounding resistors:
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Just delidded the CPU , Liquid Metal on the bare die, copper shim above and thermal paste Phobya Nanogrease Extreme between the shim and the ICE Tower cooler - 9C reduction under 100% stress test. Was 50C before, 41C now:
3000/1150 overclocked stable.
The default paste was a joke. -
I think I won silicon lottery again. Ordered two Pi’s - one hit 3GHz CPU and 950Mhz GPU without additional voltage and 1.1GHz GPU with +0.05V over_voltage_delta=5000.
The other one couldn’t hit 3GHz without additional voltage, so I sent it back.
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Dual fan solution, 2x12V fans - 40x20mm Noctua for intake and 40x7mm Evercool for outtake , both undervolted at 5V, complete silent.
Max temp under full 100% stress test - 39C.
Room temperature 22C
Idle temp. of Pi 4 - 27C
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Further testing…:
2385Mhz CPU, 940Mhz GPU - stable!
The copper shim between the CPU die and the heatsink:
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Hi guys,
Decided to go extreme, delidded my Pi4, apllied Liquid Metal to the bare die, copper shim above and Ice Tower cooling solution with Noctua 40x20 12V UV at 5V fan, Phobya Nanogreese Extreme TIM between copper shim and the cooler.
Results :
Rock-stable Pi4 with over_voltage=10 (1.1V) at 2366Mhz for the CPU and 915Mhz for the GPU.
Max temp under 4xstress_ng+120GB bluray rip playing at the same time - 45C.
Only watching 120+ bluray rips - 31C
Idle - 27C with force_turbo=1 all the time.
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As I see A8H uses cortex A73 CPU at 1.5Ghz versus A72 on Pi4. But in my case Pi4 is @2.35GHz/900Mhz GPU which makes it considerably faster in this case or am I wrong?
Greetings!
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Thanks for your very informative post!
Actually Sony stopped updating A8H since November 2021…
But as you said, I don’t find any difference in playback between Pi4 and ATV9…
I do even think the blacks in movies are better on ATV…
Too pity I didn’t do this comparison before I bought Pi4…
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Hello everybody,
I have Sony A8H OLED TV with Android TV 9.
What would be the advantages over Android TV if I build Libreelec box with Raspberry Pi 4 2GB in terms of movie’s quality?
Thanks a ton for your response!
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Does somebody know why disable led in config.txt doesn‘t work with 10.0.3 anymore?
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Which remote would you recommend the most?
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Hi everybody!
Does overclocking Pi4 affect the smoothness , responsiveness and overall performance of LibreELEC?
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Meh, only 2.35GHz
.. see https://www.pcgamer.com/raspberry-pi-overclock-3ghz/ !!😆😆😆
This guy is crazy…
😂😂😂
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Pi 4 2GB @ 2.375Ghz CPU and 930Mhz GPU, 256GB mSata SSD:
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On my Mecool M8S Pro all 4K files up to 180mbps play butterly smooth.
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Did you say the remote works out of the box after upgrading to v8.2.4?
Yes, you just have to find the proper remote.conf file for your box.
