F.A.Q.
raspberrypi.org/magpi July 2018 69
YOUR QUESTIONS ANSWERED
FROM THE RASPBERRY PI FAQ
RASPBERRYPI.ORG/HELP
WHAT ARE THE DIMENSIONS
OF THE RASPBERRY PI?
The Raspberry Pi Model B versions measure
85.60 × 56 × 21 mm (roughly 3.37 × 2.21 × 0.83
inches), with a little overlap for the microSD
card and connectors which project over the
edges. They weigh 45 g. The Pi Zero and Pi
Zero W measure 65 × 30 × 5.4 mm (roughly
2.56 × 1.18 × 0.20 inches) and weigh 9 g. For
the mechanical outline, please see the
documentation: magpi.cc/xhPBSq.
WHAT HARDWARE DOCUMENTATION
IS AVAILABLE?
All available documentation is in
our documentation repository:
magpi.cc/ujsAel.
WHAT SOC ARE YOU USING?
All models of Raspberry Pi use Broadcom
SoCs, containing a VideoCore IV GPU but
with various ARM CPU cores.
The original Raspberry Pi used a
Broadcom BCM2835. This contains a
single‑core ARM1176JZFS with floating
point, running at 700MHz, and a VideoCore
IV GPU. The GPU is capable of Blu-
ray-quality playback, using H.264 at
40MBps. It has a fast 3D core, accessed
using the supplied OpenGL ES 2.0 and
OpenVG libraries.
The Pi 2 Model B originally used the
Broadcom BCM2836. This contains a quad-
core ARM Cortex‑A7 processor with floating
point and NEON, running at 900MHz, and
the same VideoCore IV GPU that is in the
earlier models of Raspberry Pi.
The Pi 3 Model B uses the Broadcom
BCM2837, containing a quad-core ARM
Cortex-A53 running at 1.2GHz. Its GPU
capabilities are equivalent to the Pi 2.
Newer Pi 2 boards now use the same SoC
as the Pi 3, but downclocked to match the
speed of the original Pi 2 SoC.The new Pi 3 Model B+ uses the
Broadcom BCM2837B0, containing a quad-
core ARM Cortex-A53 running at 1.4 GHz.WHAT IS A SOC?
A system-on-a-chip (SoC) is a method of
placing all necessary electronics for running
a computer on a single chip. Instead of
having an individual chip for the CPU, GPU,
USB controller, RAM, etc., everything is
compressed down into one tidy package.WHY DID YOU SELECT THE SOC?
Cost and performance.HOW DOES IT BOOT?
As standard, all the files necessary for
booting are installed in a FAT32 partition
of the microSD card. The latest firmware/
software, however, allows booting to be set
up without a microSD card, for example from
a USB stick or other mass storage device.Having trouble with The MagPi on the App Store or Google Play?
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