aftermath17
Posts: 5
Joined: Thu Aug 11, 2022 1:35 pm

Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 2:07 pm

I just bought a new Raspberry Pi 4b and noticed it is Rev 1.5. Another interesting thing is the default "overclock" setting in config.txt:

Code: Select all

#uncomment to overclock the arm. 700 MHz is the default.
arm_freq=2000
It came like this. It's in an Argon ONE v2 case and the CPU and GPU idle around 37-38C. If I run stress tests, I can get it to 53C (maximum). It seems to run very well. I'm interested in overclocking it to test the performance against some difficult emulation. It seems like I could push this one a little? I tried the following:

Code: Select all

#uncomment to overclock the arm. 700 MHz is the default.
arm_freq=2147
gpu_freq=750
It still sit under 40C and never exceeds 55C during stress tests. My understanding is that over_voltage and core_freq are no longer necessary? What is the best way to push this a little further?

memjr
Posts: 3228
Joined: Fri Aug 21, 2020 5:59 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 2:38 pm

You bought a new Pi and it came in an Argon case? Seems like someone had already tweaked settings in the SD card.

Are you sure you bought a *new* Pi? At the very least the SD card has already been used and tweaked.

aftermath17
Posts: 5
Joined: Thu Aug 11, 2022 1:35 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 3:28 pm

Sorry no, it is a brand new Pi 4b. It did not come in an Argon ONE case, I bought the case and put it in there :)

My mistake, the overclock is software-based so the image I used probably had that set. Even with an arm_freq of 2000, this thing doesn't even sweat and idles ~40C. I bet it can go much higher.

Code: Select all

Revision        : d03115
Model           : Raspberry Pi 4 Model B Rev 1.5

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kerry_s
Posts: 6608
Joined: Thu Jan 30, 2020 7:14 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 3:43 pm

2000 is the most stable. my current

Code: Select all

arm_freq=2000
core_freq=700
gpu_freq=700
if you did not create your own sd, you should make a new 1.

standard clock speed for a pi4 is 1.5ghz(1500) with boost to 2000(2ghz).

i run mine in performance mode as it is mainly used as a desktop.

aftermath17
Posts: 5
Joined: Thu Aug 11, 2022 1:35 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 3:58 pm

When you say you run in "performance mode", are you referring to the overlock settings in your post? I know that "over_voltage" has been deemed to not be necessary anymore. I assume the consensus is the 3 other settings you use still apply to the newest revisions of the Pi 4?

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kerry_s
Posts: 6608
Joined: Thu Jan 30, 2020 7:14 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 4:29 pm

aftermath17 wrote:
Thu Aug 11, 2022 3:58 pm
When you say you run in "performance mode", are you referring to the overlock settings in your post? I know that "over_voltage" has been deemed to not be necessary anymore. I assume the consensus is the 3 other settings you use still apply to the newest revisions of the Pi 4?
for raspberry put

Code: Select all

echo "performance" | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
in autostart

i'm currently on manjaro, but have it setup the same way.
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kerry_s
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Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 6:41 pm

I assume the consensus is the 3 other settings you use still apply to the newest revisions of the Pi 4?
yes, i'm using a pi4-4gb, when using raspberry i'm using the standard 32bit raspberry os mainly for drm sites.
i have been using manjaro xfce for a more updated os, i have it setup to use the arm-testing repo and it's running the latest rc kernel(5.19)

my raspberry settings
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zoomer0056
Posts: 17
Joined: Mon Aug 01, 2022 10:01 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 6:55 pm

Where did you buy it?

aftermath17
Posts: 5
Joined: Thu Aug 11, 2022 1:35 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 7:20 pm

zoomer0056 wrote:
Thu Aug 11, 2022 6:55 pm
Where did you buy it?
Amazon.

zoomer0056
Posts: 17
Joined: Mon Aug 01, 2022 10:01 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 7:31 pm

Great!. Who was the vendor on amazon?

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HawaiianPi
Posts: 7869
Joined: Mon Apr 08, 2013 4:53 am
Location: Aloha, Oregon USA

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Thu Aug 11, 2022 10:18 pm

aftermath17 wrote:
Thu Aug 11, 2022 3:28 pm
Even with an arm_freq of 2000, this thing doesn't even sweat and idles ~40C. I bet it can go much higher.
A little higher, maybe, but much higher is doubtful.

Also, the Rev 1.4 and newer boards already boost to 1.8GHz under RPiOS Bullseye (without any overclock settings).
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups, and where is that annoying music coming from?

aftermath17
Posts: 5
Joined: Thu Aug 11, 2022 1:35 pm

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Fri Aug 12, 2022 1:36 pm

zoomer0056 wrote:
Thu Aug 11, 2022 7:31 pm
Great!. Who was the vendor on amazon?
Mechatronics Inc.

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SonoraTechnical
Posts: 27
Joined: Mon Apr 20, 2020 9:23 pm
Location: Alamos, Sonora, MEX and Green Valley, Arizona, USA

Re: Raspberry Pi 4 Model B Rev 1.5 overclock

Sun Aug 14, 2022 5:19 pm

That is impressive thermal performance.

I have early release Pi4B 4GB boards that I overclock to 1.8GHz (CPU) and 600 (GPU) with an almost inconsequential voltage boost (.05v)... My thermals are quite high at 65degC to 68degC. The ambient temperature is about 30degC w/ 50% humidity. I do have two HATS installed and the device is attached to the backside of the Official 8" RpI Touch Screen, so there certainly are additional thermal influencers.

I had one of those Pimoni fans, but it gave up the ghost in a matter of weeks. I may look to see if I can setup some form of active cooling.
learning never stops...

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