🚀 Raspberry Pi 4: The Ultimate 2026 Review & 10 Epic Projects

Remember the first time you saw a computer the size of a credit card? We do. But when the Raspberry Pi 4 dropped, it didn’t just shrink a PC; it reinvented it. At Why Pi™, we’ve spent countless hours pushing this tiny titan to its limits, and let us tell you: it’s still a beast in 2026. While the Pi 5 has arrived, the Pi 4 remains the sweet spot for performance and value, offering dual 4K output, true Gigabit Ethernet, and USB 3.0 speeds that leave its predecessors in the dust.

But here’s the twist: is it still worth buying today? Absolutely, but only if you know how to wield it. In this deep dive, we’ll not only dissect its hardware and expose the common pitfalls (like that notorious USB-C power issue) but also guide you through 10 mind-blowing projects you can build this weekend. From a retro gaming console that rivals dedicated consoles to a network-wide ad blocker that cleans up your entire home Wi-Fi, the Pi 4 is your gateway to a smarter, more connected life. Ready to stop dreaming and start building? Let’s get started.

Key Takeaways

  • Performance Leap: The quad-core Cortex-A72 processor and LPDDR4 RAM make the Pi 4 roughly 50% faster than the Pi 3B+, capable of smooth 4K video playback and light desktop computing.
  • Connectivity King: Say goodbye to bottlenecks with USB 3.0 ports, dual-band Wi-Fi, Bluetooth 5.0, and native Gigabit Ethernet.
  • Versatility: Whether you need a media center, retro gaming hub, home server, or educational tool, the Pi 4 adapts to almost any role.
  • Future-Proofed: With production guaranteed until 2034, your investment is safe for years of tinkering and development.

👉 Shop Raspberry Pi 4 & Accessories on:

Table of Contents

⚡️ Quick Tips and Facts

Welcome, fellow digital explorers, to the wonderful world of the Raspberry Pi 4! Here at Why Pi™, we’re absolutely thrilled to delve into what makes this tiny
powerhouse tick. Whether you’re a seasoned maker or just dipping your toes into the vast ocean of single-board computing, the Raspberry Pi 4 (often affectionately called the Pi 4 or RPi4) offers an incredible blend of performance
, versatility, and affordability. It’s truly a game-changer in the world of DIY Electronics.

First off, let’s get some essential facts straight. The Raspberry Pi 4 is
the fourth generation of the flagship Raspberry Pi series, developed by Raspberry Pi Holdings and initially launched on June 24, 2019. It brought some serious upgrades over its predecessor, the Raspberry Pi
3B+, especially in processor speed, multimedia performance, memory, and connectivity. In fact, it’s designed to offer desktop performance “comparable to entry-level x86 PC systems”. Pretty neat for a device that fits in the palm of your hand, right?

Key Takeaways at a Glance:

  • Release Date: June 24, 2019.
  • Processor: Quad-core 64-bit ARM Cortex-A72, clocking in at 1.5 GHz (or 1.8 GHz in later revisions).
  • RAM Options: Available in 1GB, 2GB, 3GB (introduced April 2026), 4GB, and 8GB configurations. For a deeper dive into the most powerful variant, check out our article on the 🚀 Raspberry Pi 4 8GB: The Ultimate 2026 Powerhouse Review.
  • Connectivity: Features dual-band 2.4/5.0 GHz wireless LAN, Bluetooth 5.0, true Gigabit Ethernet, and USB 3.0 ports.
  • Display: Two micro-HDMI ports support dual displays, with resolutions up to 4K@60fps.
  • Power: Requires a 3
    .0A USB-C power supply    .
  • Longevity: Guaranteed to be in production until January 2034. Talk about future-proofing your
    projects!

But what truly sets the Pi 4 apart? Is it just raw power, or is there more to this tiny titan? Stick around, and we’ll uncover all its secrets!

📜 From Humble Beginnings: The Raspberry Pi 4 Legacy


Video: I Can Save You Money! – Raspberry Pi Alternatives.








Ah, the Raspberry Pi. It started as a humble educational tool, designed to get kids coding
and tinkering. Fast forward to 2019, and the Raspberry Pi Foundation dropped a bombshell: the Raspberry Pi 4 Model B. This wasn’t just an incremental update; it was a reimagining of what
a single-board computer could be.

Before the Pi 4, we were often limited by the USB 2.0 bottleneck for external storage and networking, and the processing power, while impressive for its size, sometimes left us wanting
more for demanding tasks. The Pi 3B+ was a fantastic machine, but the Pi 4 truly broke free from those constraints.

The “Pi 4 features a Broadcom BCM271 system on a chip (SoC)… offering a boost in processing and graphics performance,” which was a huge leap forward. This new SoC, boasting a quad-core 64-bit ARM Cortex-A72 CPU, meant that
suddenly, the Pi wasn’t just for blinking LEDs and simple scripts. It could genuinely handle tasks like 4K video playback, running a full-fledged desktop environment, and even light gaming.

Our team at Why Pi™ remembers
the buzz vividly. We had been pushing the limits of previous Pis, often hitting performance ceilings. When the Pi 4 arrived, it felt like Christmas morning! We could finally tackle projects that required more grunt, more memory, and faster I
/O. It truly cemented the Raspberry Pi’s place not just as a learning tool, but as a serious contender for embedded systems, home servers, and even light desktop replacements.

The Pi 4’s legacy is also
marked by its commitment to longevity. “The board is designed to remain in production until 2034,” which is fantastic news for industrial applications and long-term hobbyist projects. This means you can invest
your time and effort into building with the Pi 4, knowing it won’t be obsolete overnight.

Of course, no journey is without its bumps. Early revisions of the Pi 4 had a minor hiccup with a non-compliant USB
-C power input, causing issues with some e-marker chargers. But true to form, the Raspberry Pi Foundation quickly addressed this in Revision 1.2, showcasing their dedication to continuous improvement. This kind of responsiveness
is why we trust the brand.

So, while the Raspberry Pi 5 has now taken the crown as the latest flagship, the Pi 4 remains a powerhouse of potential and a cornerstone of the single
-board computer world. Its impact on enabling more complex and powerful projects for makers, educators, and engineers alike is undeniable.


Video: Raspberry Pi 4: your new $35 computer.








🚀 Unboxing the Beast: What’s Inside the Box?

Alright, you’ve decided to take the plunge! But what exactly do you get when you order a Raspberry Pi 4? This is where things can get a little
tricky, as the “box” can mean different things depending on whether you buy just the board or a complete kit. Let’s break it down.

The Bare Board Experience:

If you opt for just the Raspberry Pi 4 board
, you’ll typically receive a small, anti-static bag containing:

  • The Raspberry Pi 4 Model B board itself: This is the star of the show, a credit-card-sized marvel packed with processing power,
    RAM, and various ports.
  • A small quick-start guide: Usually just a leaflet with basic setup instructions and safety warnings.

That’s it! No frills, no fuss. This is perfect for experienced users
who already have a drawer full of accessories.

The Full Kit Adventure:

For newcomers or those who prefer a hassle-free setup, a Raspberry Pi 4 Starter Kit is often the way to go. Brands like Cana
Kit and Vilros are well-known for offering comprehensive kits. While contents can vary, a good starter kit usually includes:

  • Raspberry Pi 4 Model B Board: Of course! You’ll often have a choice of RAM
    configurations (e.g., 2GB, 4GB, or 8GB).
  • Official Raspberry Pi 4 Power Supply: This is crucial! As mentioned, the Pi 4 requires a 3.0A USB-
    C power supply    . Don’t skimp here; a reliable power supply prevents countless headaches.
  • Micro HDMI to HDMI Cables (x2): Remember, the Pi 4 uses two
    micro-HDMI ports, not standard HDMI. Most kits will include one or two cables for dual monitor setups.
  • High-Quality MicroSD Card (pre-loaded with OS): Often 3
    2GB or 64GB, and sometimes pre-imaged with Raspberry Pi OS (formerly Raspbian) or NOOBS, which simplifies the initial setup.
  • Case: A protective enclosure for your Pi. These range
    from simple plastic shells to more elaborate cases with built-in fans or heatsinks.
  • Heatsinks/Fan: Given the Pi 4’s increased performance, it can run warm. Many kits include passive heatsinks or an
    active fan to keep temperatures in check.
  • Optional Peripherals: Some premium kits might throw in a USB-C switch, a small fan, or even a basic mouse and keyboard.

Our Anecdote:

One of our engineers, Alex, once tried to power his brand-new Pi 4 with an old phone charger. “It just kept rebooting randomly,” he recounted, “I spent hours troubleshooting software before realizing my power supply was under
powered. Lesson learned: always use the recommended 3.0A USB-C power supply!“

So, while the bare board is a minimalist’s dream, a well-curated kit from a reputable brand like
CanaKit can save you a lot of time and potential frustration. It ensures you have all the necessary components to get up and running smoothly.

👉 Shop Raspberry Pi 4 Kits on:

🔌 Hardware Deep Dive: Specs That Actually Matter


Video: Top 10 Raspberry Pi Projects for 2022.








Alright, tech enthusiasts, this is where we get down to the nitty-gritty! The Raspberry Pi 4 isn’t just a pretty face; it’s packed with some serious hardware that makes it incredibly capable. Let’s
peel back the layers and examine the specifications that truly make a difference in your projects.

The Brain: Broadcom BCM2711 SoC

At the heart of the Pi 4 lies the Broadcom BCM27
11 System on a Chip (SoC). This is a significant upgrade from previous generations, and it’s responsible for the Pi 4’s impressive performance boost.

  • CPU: It
    features a quad-core 64-bit ARM Cortex-A72 processor. Initially clocked at 1.5 GHz, later revisions (C0 stepping introduced mid-2021) bumped this up to 1.8 GHz
    . This CPU is approximately 50% faster than the BCM2837 found in the Raspberry Pi 3 Model B+. What does this mean for you? Faster
    boot times, smoother multitasking, and more complex applications running without a hitch!
  • Cache: Each core boasts a 32 KB L1 data cache and a 48 KB L1 instruction cache, complemented by a
    1 MB shared L2 cache. More cache means the CPU can access frequently used data much faster, leading to better overall performance.
  • GPU: The graphical heavy lifting is handled by a VideoCore VI
    GPU     running at 500 MHz. This GPU supports OpenGL ES 3.1 and Vulkan 1.2 APIs, enabling more demanding graphics applications. It also handles hardware decoding for H.
    265 (4Kp60)     and H.264 (1080p60 decode, 1080p30 encode). This is why your Pi 4 can
    effortlessly stream 4K video!

Memory: LPDDR4 RAM

The Pi 4 was the first Raspberry Pi to utilize LPDDR4 RAM, running at a speedy 3.2 GHz. This
faster memory bandwidth is crucial for the improved CPU and GPU performance.

  • Configurations: You can find the Pi 4 in various RAM configurations: 1GB, 2GB, 3GB (a newer option as of April 2026), 4GB, and a whopping 8GB (introduced May 2020).
  • Choosing the Right RAM:
  • 1GB/
    2GB:     Perfect for headless servers (like Pi-hole), basic IoT projects, or learning to code.
  • 4GB: The sweet spot for most users. Great for desktop use, media centers, retro gaming, and more
    complex projects.
  • 8GB: Ideal for demanding tasks like running multiple Docker containers, light virtualization, or serving as a robust development machine.

Connectivity: Breaking the Bottlenecks

This is where the Pi 4 truly shines
compared to its predecessors. The Raspberry Pi Foundation listened to user feedback and delivered significant upgrades.

  • USB 3.0: Gone are the days of all USB 2.0 ports! The Pi 4 features two USB
    3.0 ports and two USB 2.0 ports    . The USB 3.0 ports offer significantly faster data transfer speeds, making external SSDs a viable option for storage or even booting.
  • Gig
    abit Ethernet:     Finally, true Gigabit Ethernet! Unlike previous models where the Ethernet port was limited by the USB 2.0 bus, the Pi 4’s Gigabit Ethernet is natively attached, offering full bandwidth. This is fantastic for network-attached storage (NAS) or high-speed data transfers.
  • Wireless: Enjoy Bluetooth 5.0 (an upgrade from 4.2) and 802.11
    ac Wi-Fi     (dual-band 2.4/5.0 GHz). Faster and more reliable wireless connectivity is always a plus!

Display: Dual 4K Output!

For the first time, a Raspberry Pi could drive two displays simultaneously!

  • Micro-HDMI: The Pi 4 sports two micro-HDMI ports, replacing the single standard HDMI port of earlier models.
  • Resolution: It can handle up to 4K@60fps on a single display or dual 4K@30fps. This makes it a surprisingly capable machine
    for digital signage, multi-monitor workstations, or advanced media centers.

Power Input: USB-C

The Pi 4 transitioned to USB-C for power input, requiring a 5V @ 3A supply. While this is a modern and convenient connector, remember the early revision hiccup with non-compliant USB-C cables. Always use a high-quality, official Raspberry Pi power supply
or a reputable third-party alternative to avoid power-related issues.

Expansion: GPIO and PoE

The iconic 40-pin GPIO header remains, ensuring backwards compatibility with a vast ecosystem of HATs (Hardware Attached on Top) and sensors. Additionally, the Pi 4 supports Power over Ethernet (PoE) via an optional HAT, perfect for clean, single-cable installations in network environments.

Raspberry Pi 4
Model B Specifications Table

| Feature | Specification

| Feature | Description

The Raspberry Pi 4: A Deep Dive into the Fourth Generation

Why Pi™ Rating Table

| Aspect | Rating (1-10) | Notes

⚡️ Quick Tips and Facts

Welcome, fellow digital explorers, to the wonderful world of the Raspberry Pi 4! Here at Why Pi™, we’re absolutely thrilled to delve into what makes this
tiny powerhouse tick. Whether you’re a seasoned maker or just dipping your toes into the vast ocean of single-board computing, the Raspberry Pi 4 (often affectionately called the Pi 4 or RPi4) offers an incredible blend
of performance, versatility, and affordability. It’s truly a game-changer in the world of DIY Electronics.

First off, let’s get some essential facts straight. The Raspberry Pi 4 is the fourth generation of the flagship Raspberry Pi series, developed by Raspberry Pi Holdings and initially launched on June 24, 2019. It brought some serious upgrades over its predecessor, the Raspberry Pi 3B+, especially in processor speed, multimedia performance, memory, and connectivity. In fact, it’s designed to offer desktop
performance “comparable to entry-level x86 PC systems”. Pretty neat for a device that fits in the palm of your hand, right?

Key Takeaways at a Glance:

Release Date: June 24, 2019.

  • Processor: Quad-core 64-bit ARM Cortex-A72, clocking in at 1.
    5 GHz (or 1.8 GHz in later revisions).
  • RAM Options: Available in 1GB, 2GB, 3GB (introduced April 2026), 4GB, and 8GB configurations. For a deeper dive into the most powerful variant, check out our article on the 🚀 Raspberry Pi 4 8GB: The Ultimate 2026 Powerhouse Review.
  • Connectivity: Features dual-band 2.4/5.0 GHz wireless
    LAN, Bluetooth 5.0, true Gigabit Ethernet, and USB 3.0 ports.
  • Display: Two micro-HDMI ports support dual displays, with resolutions up to
    4K@60fps.
  • Power: Requires a 3.0A USB-C power supply.
  • Longevity: Guaranteed
    to be in production until January 2034. Talk about future-proofing your projects!

But what truly sets the Pi 4 apart? Is it just raw power, or is there more
to this tiny titan? Stick around, and we’ll uncover all its secrets!

📜 From Humble Beginnings


Video: how I made a budget NAS with a Raspberry Pi 4 (and you can too).








: The Raspberry Pi 4 Legacy

Ah, the Raspberry Pi. It started as a humble educational tool, designed to get kids coding and tinkering. Fast forward to 2019, and the Raspberry Pi Foundation dropped a bombshell: the
Raspberry Pi 4 Model B. This wasn’t just an incremental update; it was a reimagining of what a single-board computer could be.

Before the Pi 4, we were often limited by the USB
2.0 bottleneck for external storage and networking, and the processing power, while impressive for its size, sometimes left us wanting more for demanding tasks. The Pi 3B+ was a fantastic machine, but the Pi 4 truly
broke free from those constraints.

The “Pi 4 features a Broadcom BCM271 system on a chip (SoC)… offering a boost in processing and graphics performance,” which was a huge leap forward
. This new SoC, boasting a quad-core 64-bit ARM Cortex-A72 CPU, meant that suddenly, the Pi wasn’t just for blinking LEDs and simple scripts. It could genuinely handle tasks like 4
K video playback, running a full-fledged desktop environment, and even light gaming.

Our team at Why Pi™ remembers the buzz vividly. We had been pushing the limits of previous Pis, often hitting performance ceilings. When the Pi
4 arrived, it felt like Christmas morning! We could finally tackle projects that required more grunt, more memory, and faster I/O. It truly cemented the Raspberry Pi’s place not just as a learning tool, but as a
serious contender for embedded systems, home servers, and even light desktop replacements.

The Pi 4’s legacy is also marked by its commitment to longevity. “The board is designed to remain in production until 2034
,” which is fantastic news for industrial applications and long-term hobbyist projects. This means you can invest your time and effort into building with the Pi 4, knowing it won’t be obsolete overnight.

Of course, no journey is without its bumps. Early revisions of the Pi 4 had a minor hiccup with a non-compliant USB-C power input, causing issues with some e-marker chargers.
But true to form, the Raspberry Pi Foundation quickly addressed this in Revision 1.2, showcasing their dedication to continuous improvement. This kind of responsiveness is why we trust the brand.

So, while the Raspberry Pi 5 has now
taken the crown as the latest flagship, the Pi 4 remains a powerhouse of potential and a cornerstone of the single-board computer world. Its impact on enabling more complex and powerful projects for makers,
educators, and engineers alike is undeniable.

🚀 Unboxing the Beast: What’s Inside the Box?


Video: RetroPie: A Raspberry Pi Gaming Machine.








Alright
, you’ve decided to take the plunge! But what exactly do you get when you order a Raspberry Pi 4? This is where things can get a little tricky, as the “box” can mean different things depending on whether you
buy just the board or a complete kit. Let’s break it down.

The Bare Board Experience:

If you opt for just the Raspberry Pi 4 board, you’ll typically receive a small, anti-static bag
containing:

  • The Raspberry Pi 4 Model B board itself: This is the star of the show, a credit-card-sized marvel packed with processing power, RAM, and various ports.
  • A small
    quick-start guide:     Usually just a leaflet with basic setup instructions and safety warnings.

That’s it! No frills, no fuss. This is perfect for experienced users who already have a drawer full of accessories.

The
Full Kit Adventure:

For newcomers or those who prefer a hassle-free setup, a Raspberry Pi 4 Starter Kit is often the way to go. Brands like CanaKit and Vilros are well-known for offering comprehensive
kits. While contents can vary, a good starter kit usually includes:

  • Raspberry Pi 4 Model B Board: Of course! You’ll often have a choice of RAM configurations (e.g., 2GB, 4GB, or 8GB).
  • Official Raspberry Pi 4 Power Supply: This is crucial! As mentioned, the Pi 4 requires a 3.0A USB-C power supply. Don’t skimp here; a reliable power supply prevents countless headaches.
  • Micro HDMI to HDMI Cables (x2): Remember, the Pi 4 uses two micro-HDMI ports,
    not standard HDMI. Most kits will include one or two cables for dual monitor setups.
  • High-Quality MicroSD Card (pre-loaded with OS): Often 32GB or 6
    4GB, and sometimes pre-imaged with Raspberry Pi OS (formerly Raspbian) or NOOBS, which simplifies the initial setup.
  • Case: A protective enclosure for your Pi. These range from simple plastic shells to
    more elaborate cases with built-in fans or heatsinks.
  • Heatsinks/Fan: Given the Pi 4’s increased performance, it can run warm. Many kits include passive heatsinks or an active fan to
    keep temperatures in check.
  • Optional Peripherals: Some premium kits might throw in a USB-C switch, a small fan, or even a basic mouse and keyboard.

Our Anecdote:
One of our
engineers, Alex, once tried to power his brand-new Pi 4 with an old phone charger. “It just kept rebooting randomly,” he recounted, “I spent hours troubleshooting software before realizing my power supply was underpowered. Lesson
learned: always use the recommended 3.0A USB-C power supply!“

So, while the bare board is a minimalist’s dream, a well-curated kit from a reputable brand like CanaKit can
save you a lot of time and potential frustration. It ensures you have all the necessary components to get up and running smoothly.

👉 Shop Raspberry Pi 4 Kits on:

🔌 Hardware Deep Dive:


Video: How good is Raspberry Pi 4 today? As a desktop and server.








Specs That Actually Matter

Alright, tech enthusiasts, this is where we get down to the nitty-gritty! The Raspberry Pi 4 isn’t just a pretty face; it’s packed with some serious hardware that makes it
incredibly capable. Let’s peel back the layers and examine the specifications that truly make a difference in your projects.

The Brain: Broadcom BCM2711 SoC

At the heart of the Pi 4 lies the
Broadcom BCM2711 System on a Chip (SoC). This is a significant upgrade from previous generations, and it’s responsible for the Pi 4’s impressive performance boost.

  • CPU: It features a quad-core 64-bit ARM Cortex-A72 processor. Initially clocked at 1.5 GHz, later revisions (C0 stepping introduced mid-2021) bumped this up to 1.8 GHz. This CPU is approximately 50% faster than the BCM2837 found in the Raspberry Pi 3 Model B+. What does this mean for you? Faster boot times, smoother multitasking, and more complex applications running without a hitch!
  • Cache: Each core boasts a 32 KB L1 data cache and a 48
    KB L1 instruction cache, complemented by a 1 MB shared L2 cache. More cache means the CPU can access frequently used data much faster, leading to better overall performance.
  • GPU: The
    graphical heavy lifting is handled by a VideoCore VI GPU running at 500 MHz. This GPU supports OpenGL ES 3.1 and Vulkan 1.2 APIs, enabling more demanding graphics
    applications. It also handles hardware decoding for H.265 (4Kp60) and H.264 (1080p60 decode, 1080p30 encode). This is why your Pi 4 can effortlessly stream 4K video!

Memory: LPDDR4 RAM

The Pi 4 was the first Raspberry Pi to utilize LPDDR4 RAM, running
at a speedy 3.2 GHz. This faster memory bandwidth is crucial for the improved CPU and GPU performance.

  • Configurations: You can find the Pi 4 in various RAM configurations: 1
    GB, 2GB, 3GB (a newer option as of April 2026), 4GB, and a whopping 8GB (introduced May 2020).
  • Choosing the Right RAM:
  • 1GB/2GB: Perfect for headless servers (like Pi-hole), basic IoT projects, or learning to code.
  • 4GB
    :     The sweet spot for most users. Great for desktop use, media centers, retro gaming, and more complex projects.
  • 8GB: Ideal for demanding tasks like running multiple Docker containers, light virtualization, or serving as
    a robust development machine.

Connectivity: Breaking the Bottlenecks

This is where the Pi 4 truly shines compared to its predecessors. The Raspberry Pi Foundation listened to user feedback and delivered significant upgrades.

  • USB
    3.0:     Gone are the days of all USB 2.0 ports! The Pi 4 features two USB 3.0 ports and two USB 2.0 ports. The USB
    3.0 ports offer significantly faster data transfer speeds, making external SSDs a viable option for storage or even booting.
  • Gigabit Ethernet: Finally, true Gigabit Ethernet! Unlike previous models where the Ethernet port was
    limited by the USB 2.0 bus, the Pi 4’s Gigabit Ethernet is natively attached, offering full bandwidth. This is fantastic for network-attached storage (NAS) or high-speed data transfers.

Wireless: Enjoy Bluetooth 5.0 (an upgrade from 4.2) and 802.11ac Wi-Fi (dual-band 2.4/5.0 GHz)
. Faster and more reliable wireless connectivity is always a plus!

Display: Dual 4K Output!

For the first time, a Raspberry Pi could drive two displays simultaneously!

  • Micro-HDMI: The Pi 4 sports two micro-HDMI ports, replacing the single standard HDMI port of earlier models.
  • Resolution: It can handle up to 4K
    @60fps on a single display     or dual 4K@30fps. This makes it a surprisingly capable machine for digital signage, multi-monitor workstations, or advanced media centers.

Power

Input: USB-C

The Pi 4 transitioned to USB-C for power input, requiring a 5V @ 3A supply. While this is a modern and convenient connector,
remember the early revision hiccup with non-compliant USB-C cables. Always use a high-quality, official Raspberry Pi power supply or a reputable third-party alternative to avoid power-related issues.

Expansion: GPIO and PoE

The iconic 40-pin GPIO header remains, ensuring backwards compatibility with a vast ecosystem of HATs (Hardware Attached on Top) and sensors. Additionally, the Pi 4 supports Power
over Ethernet (PoE) via an optional HAT, perfect for clean, single-cable installations in network environments.

Raspberry Pi 4 Model B Specifications Table

| Feature | Specification

📜 From Humble Beginnings: The Raspberry Pi


Video: Smarter than a Smart TV! (Raspberry Pi Inside).








4 Legacy

Ah, the Raspberry Pi. It started as a humble educational tool, designed to get kids coding and tinkering. Fast forward to 2019, and the Raspberry Pi Foundation dropped a bombshell: the Raspberry Pi 4
Model B. This wasn’t just an incremental update; it was a reimagining of what a single-board computer could be.

Before the Pi 4, we were often limited by the USB 2.0
bottleneck for external storage and networking, and the processing power, while impressive for its size, sometimes left us wanting more for demanding tasks. The Pi 3B+ was a fantastic machine, but the Pi 4 truly broke free from those
constraints.

The “Pi 4 features a Broadcom BCM271 system on a chip (SoC)… offering a boost in processing and graphics performance,” which was a huge leap forward. This new SoC
, boasting a quad-core 64-bit ARM Cortex-A72 CPU, meant that suddenly, the Pi wasn’t just for blinking LEDs and simple scripts. It could genuinely handle tasks like 4K video playback,
running a full-fledged desktop environment, and even light gaming.

Our team at Why Pi™ remembers the buzz vividly. We had been pushing the limits of previous Pis, often hitting performance ceilings. When the Pi 4 arrived,
it felt like Christmas morning! We could finally tackle projects that required more grunt, more memory, and faster I/O. It truly cemented the Raspberry Pi’s place not just as a learning tool, but as a serious contender for
embedded systems, home servers, and even light desktop replacements.

The Pi 4’s legacy is also marked by its commitment to longevity. “The board is designed to remain in production until 2034,” which is fantastic news for industrial applications and long-term hobbyist projects. This means you can invest your time and effort into building with the Pi 4, knowing it won’t be obsolete overnight.

Of course,
no journey is without its bumps. Early revisions of the Pi 4 had a minor hiccup with a non-compliant USB-C power input, causing issues with some e-marker chargers. But true to form
, the Raspberry Pi Foundation quickly addressed this in Revision 1.2, showcasing their dedication to continuous improvement. This kind of responsiveness is why we trust the brand.

So, while the Raspberry Pi 5 has now taken the crown as
the latest flagship, the Pi 4 remains a powerhouse of potential and a cornerstone of the single-board computer world. Its impact on enabling more complex and powerful projects for makers, educators, and engineers
alike is undeniable.

🚀 Unboxing the Beast: What’s Inside the Box?


Video: Every Developer Needs a Raspberry Pi.








Alright, you’
ve decided to take the plunge! But what exactly do you get when you order a Raspberry Pi 4? This is where things can get a little tricky, as the “box” can mean different things depending on whether you buy just the
board or a complete kit. Let’s break it down.

The Bare Board Experience:

If you opt for just the Raspberry Pi 4 board, you’ll typically receive a small, anti-static bag containing:

  • The Raspberry Pi 4 Model B board itself: This is the star of the show, a credit-card-sized marvel packed with processing power, RAM, and various ports.
  • A small quick-start
    guide:     Usually just a leaflet with basic setup instructions and safety warnings.

That’s it! No frills, no fuss. This is perfect for experienced users who already have a drawer full of accessories.

The Full Kit Adventure
:

For newcomers or those who prefer a hassle-free setup, a Raspberry Pi 4 Starter Kit is often the way to go. Brands like CanaKit and Vilros are well-known for offering comprehensive kits. While
contents can vary, a good starter kit usually includes:

  • Raspberry Pi 4 Model B Board: Of course! You’ll often have a choice of RAM configurations (e.g., 2GB, 4GB, or 8GB).
  • Official Raspberry Pi 4 Power Supply: This is crucial! As mentioned, the Pi 4 requires a 3.0A USB-C power supply. Don’t skimp here; a reliable power supply prevents countless headaches.
  • Micro HDMI to HDMI Cables (x2): Remember, the Pi 4 uses two micro-HDMI ports, not standard HDMI
    . Most kits will include one or two cables for dual monitor setups.
  • High-Quality MicroSD Card (pre-loaded with OS): Often 32GB or 64GB,
    and sometimes pre-imaged with Raspberry Pi OS (formerly Raspbian) or NOOBS, which simplifies the initial setup.
  • Case: A protective enclosure for your Pi. These range from simple plastic shells to more elaborate cases
    with built-in fans or heatsinks.
  • Heatsinks/Fan: Given the Pi 4’s increased performance, it can run warm. Many kits include passive heatsinks or an active fan to keep temperatures in
    check.
  • Optional Peripherals: Some premium kits might throw in a USB-C switch, a small fan, or even a basic mouse and keyboard.

Our Anecdote:
One of our engineers, Alex
, once tried to power his brand-new Pi 4 with an old phone charger. “It just kept rebooting randomly,” he recounted, “I spent hours troubleshooting software before realizing my power supply was underpowered. Lesson learned: **
always use the recommended 3.0A USB-C power supply!**”

So, while the bare board is a minimalist’s dream, a well-curated kit from a reputable brand like CanaKit can save you a
lot of time and potential frustration. It ensures you have all the necessary components to get up and running smoothly.

👉 Shop Raspberry Pi 4 Kits on:

🔌 Hardware Deep Dive: Specs That Actually


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Matter

Alright, tech enthusiasts, this is where we get down to the nitty-gritty! The Raspberry Pi 4 isn’t just a pretty face; it’s packed with some serious hardware that makes it incredibly capable.
Let’s peel back the layers and examine the specifications that truly make a difference in your projects.

The Brain: Broadcom BCM2711 SoC

At the heart of the Pi 4 lies the Broadcom
BCM2711 System on a Chip (SoC). This is a significant upgrade from previous generations, and it’s responsible for the Pi 4’s impressive performance boost.

CPU: It features a quad-core 64-bit ARM Cortex-A72 processor. Initially clocked at 1.5 GHz, later revisions (C0 stepping introduced mid-2021) bumped this
up to 1.8 GHz. This CPU is approximately 50% faster than the BCM2837 found in the Raspberry Pi 3 Model B+. What
does this mean for you? Faster boot times, smoother multitasking, and more complex applications running without a hitch!

  • Cache: Each core boasts a 32 KB L1 data cache and a 48 KB L1
    instruction cache, complemented by a 1 MB shared L2 cache. More cache means the CPU can access frequently used data much faster, leading to better overall performance.
  • GPU: The graphical heavy lifting is handled by
    a VideoCore VI GPU running at 500 MHz. This GPU supports OpenGL ES 3.1 and Vulkan 1.2 APIs, enabling more demanding graphics applications. It also handles hardware
    decoding for H.265 (4Kp60) and H.264 (1080p60 decode, 1080p30 encode). This is why your Pi
    4 can effortlessly stream 4K video!

Memory: LPDDR4 RAM

The Pi 4 was the first Raspberry Pi to utilize LPDDR4 RAM, running at a speedy 3.2 GHz. This faster memory bandwidth is crucial for the improved CPU and GPU performance.

  • Configurations: You can find the Pi 4 in various RAM configurations: 1GB, 2GB, 3GB
    (a newer option as of April 2026), 4GB, and a whopping 8GB (introduced May 2020).
  • Choosing the Right
    RAM:
  • 1GB/2GB: Perfect for headless servers (like Pi-hole), basic IoT projects, or learning to code.
  • 4GB: The sweet spot for most users. Great
    for desktop use, media centers, retro gaming, and more complex projects.
  • 8GB: Ideal for demanding tasks like running multiple Docker containers, light virtualization, or serving as a robust development machine.

Connectivity:

Breaking the Bottlenecks

This is where the Pi 4 truly shines compared to its predecessors. The Raspberry Pi Foundation listened to user feedback and delivered significant upgrades.

  • USB 3.0: Gone are the days of
    all USB 2.0 ports! The Pi 4 features two USB 3.0 ports and two USB 2.0 ports. The USB 3.0 ports offer significantly faster data transfer
    speeds, making external SSDs a viable option for storage or even booting.
  • Gigabit Ethernet: Finally, true Gigabit Ethernet! Unlike previous models where the Ethernet port was limited by the USB 2.0 bus
    , the Pi 4’s Gigabit Ethernet is natively attached, offering full bandwidth. This is fantastic for network-attached storage (NAS) or high-speed data transfers.
  • Wireless: Enjoy **
    Bluetooth 5.0** (an upgrade from 4.2) and 802.11ac Wi-Fi (dual-band 2.4/5.0 GHz). Faster and more reliable wireless connectivity is always a plus!

Display: Dual 4K Output!

For the first time, a Raspberry Pi could drive two displays simultaneously!

  • Micro-HDMI
    :     The Pi 4 sports two micro-HDMI ports, replacing the single standard HDMI port of earlier models.
  • Resolution: It can handle up to 4K@60fps on a
    single display     or dual 4K@30fps. This makes it a surprisingly capable machine for digital signage, multi-monitor workstations, or advanced media centers.

Power Input: USB-C

The Pi 4 transitioned to USB-C for power input, requiring a 5V @ 3A supply. While this is a modern and convenient connector, remember the early revision hiccup
with non-compliant USB-C cables. Always use a high-quality, official Raspberry Pi power supply or a reputable third-party alternative to avoid power-related issues.

Expansion: GPIO and

PoE

The iconic 40-pin GPIO header remains, ensuring backwards compatibility with a vast ecosystem of HATs (Hardware Attached on Top) and sensors. Additionally, the Pi 4 supports Power over Ethernet (PoE)
via an optional HAT, perfect for clean, single-cable installations in network environments.

Raspberry Pi 4 Model B Specifications Table

| Feature | Specification

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