Depending on the SoC on your particular Raspberry Pi 4, the latest Raspbian might kick it up to 1.8 GHz:

https://invidious.alfter.us/watch?v=FkMfN9GvslM

tl;dr: if the second line ends in "C0T," Bullseye will run on it at 1.8 GHz. Older-production RPi 4s will have a second line that ends in "B0T," and will still run at 1.5 GHz.

I checked all of the Pis I bought over the past couple or three months for a home cluster, and they're all of the C0T variety. Guess it's time to wipe
and reload them again to get the speed boost. :)

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Scott Alfter <scott@alfter.diespammersdie.us> wrote:

Depending on the SoC on your particular Raspberry Pi 4, the latest Raspbian might kick it up to 1.8 GHz:

https://invidious.alfter.us/watch?v=FkMfN9GvslM

tl;dr: if the second line ends in "C0T," Bullseye will run on it at 1.8 GHz. Older-production RPi 4s will have a second line that ends in "B0T," and will still run at 1.5 GHz.

I checked all of the Pis I bought over the past couple or three months for a home cluster, and they're all of the C0T variety. Guess it's time to wipe and reload them again to get the speed boost. :)

Jeff got that slightly wrong; it's not the SoC revision but the board
revision that determines eligibility. See https://www.raspberrypi.com/news/bullseye-bonus-1-8ghz-raspberry-pi-4/

My two older Pi4s (B0T chip, 1.1 board) are also happy to run at 1.8 GHz,
by the way, with Buster.
--- SoupGate-Win32 v1.05
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In article <smenor$el3$1@dont-email.me>,
A. Dumas <alexandre@dumas.fr.invalid> wrote:

Scott Alfter <scott@alfter.diespammersdie.us> wrote:

Depending on the SoC on your particular Raspberry Pi 4, the latest Raspbian >> might kick it up to 1.8 GHz:

https://invidious.alfter.us/watch?v=FkMfN9GvslM

tl;dr: if the second line ends in "C0T," Bullseye will run on it at 1.8 GHz. >> Older-production RPi 4s will have a second line that ends in "B0T," and will >> still run at 1.5 GHz.

I checked all of the Pis I bought over the past couple or three months for a >> home cluster, and they're all of the C0T variety. Guess it's time to wipe >> and reload them again to get the speed boost. :)

Jeff got that slightly wrong; it's not the SoC revision but the board >revision that determines eligibility. See >https://www.raspberrypi.com/news/bullseye-bonus-1-8ghz-raspberry-pi-4/

...and he acknowledges as much in the comments:

https://www.raspberrypi.com/news/bullseye-bonus-1-8ghz-raspberry-pi-4/#comment-1565862

Might need to look at the older RPi 4 I have (not in the cluster) and see if the speedup applies to it as well, and to apply it to Gentoo if it does
(pretty sure I'm running 64-bit Gentoo on it).

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