New 2022 Official Original Raspberry Pi 4 Model B Development
Board Kit RAM 1G/2G/4G 4 Core CPU 1.5Ghz 3 Speeder Than Pi
3B+ Product DescriptionKey Differences Between Raspberry 4
Model B & Raspberry Pi 3 B+ SpecRaspberry Pi 4
BRaspberry Pi 3 B+CPU1.5-GHz, Quad-Core Broadcom BCM2711B0 (Cortex
A-72)1.4-GHz, Quad Core Broadcom BCM2837B0 (Cortex A-53)RAM1 - 4GB
DDR41GB DDR2Video Outdual micro HDMI portssingle HDMI portMax
resolution4K 60 Hz + 1080p or 2x 4K 30 Hz2560 x 1600USB Ports2x USB
3.0 / 2x USB 2.04x USB 2.0Wired NetworkingGigabit Ethernet330 Mbps
EthernetWireless802.11ac (2.4 / 5 GHz), BT 5.0802.11ac (2.4 / 5
GHz), BT 4.1Charging PortUSB Type-Cmicro USBPower
Requirement3A, 5V2.5A, 5VSize3.5 x 2.3 x 0.76 inches 3.2 x 2.2
x 0.76 inches Weight 0.1 pounds (46 grams)0.11 pounds (50
grams)Detailed ImagesRaspberry Pi has long been the gold standard
for inexpensive single-board computing, powering everything from
robots to smart home devices to digital kiosks. The
long-anticipated Raspberry Pi 4 takes Pi to another level, with
performance that's good enough to use in a pinch as a desktop PC,
plus the ability to output 4K video at 60 Hz or power dual
monitors.The most important new features are the faster processor
and GPU, more and faster RAM, the addition of USB 3 ports, dual
micro HDMI ports instead of a single HDMI connection and support
for 4K output. The higher bus speed that enables USB 3 support also
allows the on-board Ethernet port to support true Gigabit
connections (125 MBps) where the last-gen models had a theoretical
maximum of just 41 MBps. The microSD card slot is also twice as
fast, offering a theoretical maximum of 50 MBps versus 25 MBps on
the 3B+. Because the new SoC needs more power, the Raspberry
Pi 4 B charges over USB Type-C instead of micro USB. It also
requires a power adapter that can deliver at least 3 amps of power
and 5 volts, though you may be able to get away with 2.5 amps if
you don't attach many peripherals to the USB ports. Putting aside
the power needs, USB Type-C connectors are reversible, which makes
them much easier for kids (and adults) to plug in.At 3.5 x 2.3 x
0.76 inches (88 x 58 x 19.5 mm) and 0.1 pounds (46 grams), the Pi 4
is thin enough to fit in your pocket and light enough to carry
anywhere. The board is durable enough to probably survive rolling
around in your bag, but we recommend sticking it in something
protective, mostly to protect the pins. However, during testing, I
always used the board bare on my desk and I carried it back and
forth between work and home many times by simply putting it in a
cardboard box with no padding or static
bag. Unfortunately, if you want a case, you can't use
one that's been designed for any previous Raspberry Pi. The
Raspberry Pi 3 B / 3 B+ have almost the same dimensions, but the
port layout has changed just enough to make the Pi 4 B
incompatible. Where prior Pis had a single, full-size HDMI port,
the dual micro HDMI connectors on the Pi 4 jut out more and so
don't line up with the holes on anything that was designed for the
Pi 3 B. The Raspberry Pi 4 covers more than just the
basics when it comes to ports. The right side has four USB Type-A
connections, two of which are USB 3.0. There's also a full-size,
Gigabit Ethernet port for wired connections there. The bottom edge
has a 3.5mm audio jack, two micro HDMI ports and the USB Type-C
charging port. On the left side, you'll find the microSD card
reader. And on the top surface of the board, you'll see ribbon
connectors for the Camera Serial Interface (CSI) and Display Serial
Interface (DSI), which provide dedicated connections to Raspberry
Pi's own camera and screen (or compatible accessories). Of course,
you can connect a camera to a USB port as well and there are a
couple of more common ways, including the micro HDMI ports, to
output to a screen.No matter how fast your processor, RAM and GPU
are, if your storage is slow, everyday tasks like opening apps and
files will be laggy. Like all Raspberry Pis, the 4 B's primary
storage device is its microSD card reader, which is convenient but
a bit constrained. According to the Pi Foundation, the 4 B has a
top transfer rate of 50 MBps, which is double the speed of the
reader on the 3 B+. There's no known limit on capacity.Power and
HeatWith a more power-hungry processor and the need for at least a
5-volt, 3-amp power adapter, the Pi 4 should be expected to consume
more power than its predecessors. At idle, the Pi 4 B draws
3.4 watts, which is just 17 percent more than the 3 B+. Under load,
that number jumps to 7.6 watts, but that's still only 19 percent
more juice than its direct predecessor. If you want the
lowest-power Pi, performance be damned, then go for the Pi Zero W,
which consumes a mere 0.8 watts at idle and 1.6 watts under
load.Yes, this board gets warm, warmer than its predecessor.
Thermal images mirror what we experienced; the areas of the board
near the CPU get really warm, not just the top of the processor
itself. The
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