pi 400

Raspberry Pi 4 model Bs arriving with newer 'C0' stepping

Owing to a mishap with the Pi 4 model B I use for testing—more on how Red Shirt Jeff ruined that board later this week—I had to go buy a new Pi 4 last week.

The local Micro Center only had the 8 GB model in stock, so I went a little over budget and bought it. When I arrived home, I checked the board, and noticed a bit of a difference on the Broadcom SoC:

Raspberry Pi 4 model B C0 stepping on BCM2711 SoC

Can you spot it? The model number of the BCM2711 chip on this board is 2711ZPKFSB06C0T, which is the same as the chip found on the Pi 400.

This is a newer stepping of the original Pi 4 model B chip, which has the model number 2711ZPKFSB06B0T. The difference is the third-to-last character, the C versus the B.

The Raspberry Pi 400 can be overclocked to 2.2 GHz

After the Raspberry Pi 400 was launched earlier this morning, there was a lot of discussion over the thermals and performance of the upgraded 1.8 GHz System on a Chip inside:

Pi 4 model B and Pi 400 BCM2711 SoC Broadcom chip number difference

I wanted to spend a little time in this post testing overclocking, performance, power consumption, and thermals in depth.

Video version

There is also a video that goes along with this post, if you're more visually-inclined:

The Raspberry Pi 400 - Teardown and Review

Today Raspberry Pi Trading announced the Raspberry Pi 400, the latest in the series of small education-focused computers that started with the original Raspberry Pi in 2012.

For years, people have come up with creative ways to hack a Pi into keyboards, like the Original Pi in an old Mitsumi keyboard, or the Pi 3 A+ in an official Pi Keyboard.

But the Pi 400 delivers something many have desired: an official Pi 4 board built right into a Pi Keyboard, in a space- and performance-efficient way.

Raspberry Pi 400 Back Ports - Hero