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Raspberry SC15184 Pi 4 Model B 2019 Quad Core 64 Bit WiFi Bluetooth (2GB)

4.7 out of 5 stars 18,889 ratings
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Size: 2GB
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Purchase options and add-ons

Brand Raspberry Pi
Ram Memory Installed Size 2 GB
Memory Storage Capacity 2 GB
CPU Model Cortex
Connectivity Technology Bluetooth, Wi-Fi, USB, Ethernet, HDMI, GPIO

About this item

  • Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1. 5GHz
  • 2. 4 GHz and 5. 0 GHz IEEE 802. 11b/g/n/ac wireless LAN, Bluetooth 5. 0, BLE
  • 2 × USB 3. 0 ports, 2 x USB 2. 0 Ports
  • 2 × micro HDMI ports supproting up to 4Kp60 video resolution
  • Micro SD card slot for loading operating system and data storage
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Raspberry SC15184 Pi 4 Model B 2019 Quad Core 64 Bit WiFi Bluetooth (2GB)
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What's in the box

  • PI only

    • Product Description

    Raspberry Pi 4 Model B is the latest product in the popular Raspberry Pi range of computers. It offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation Raspberry Pi 3 Model B+, while retaining backwards compatibility and similar power consumption. For the end user, Raspberry Pi 4 Model B provides desktop performance comparable to entry-level x86 PC systems. This product’s key features include a high-performance 64-bit quad-core processor, dual-display support at resolutions up to 4K via a pair of micro-HDMI ports, hardware video decode at up to 4Kp60, 2GB of RAM, dual-band 2. 4/5. 0 GHz wireless LAN, Bluetooth 5. 0, Gigabit Ethernet, USB 3. 0, and PoE capability (via a separate PoE HAT add-on). The dual-band wireless LAN and Bluetooth have modular compliance certification, allowing the board to be designed into end products with significantly reduced compliance testing, improving both cost and time to market. Includes Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1. 5GHz 2GB LPDDR4-2400 SDRAM 2. 4 GHz and 5. 0 GHz IEEE 802. 11b/g/n/ac wireless LAN, Bluetooth 5. 0, BLE True gigabit ethernet 2 × USB 3. 0 ports, 2 x USB 2. 0 Ports Fully backwards compatible 40-pin GPIO header 2 × micro HDMI ports supproting up to 4Kp60 video resolution 2-lane MIPI DSI/CSI ports for camera and display 4-pole stereo audio and composite video port Micro SD card slot for loading operating system and data storage Requires 5. 1V, 3A power via USB Type C or GPIO-Not included PoE (Power over Ethernet) enabled (requires PoE HAT-not included)

    From the manufacturer

    Raspberry SC15184 Pi 4

    • Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1. 5GHz
    • 2. 4 GHz and 5. 0 GHz IEEE 802. 11b/g/n/ac wireless LAN, Bluetooth 5. 0, BLE
    • 2 × USB 3. 0 ports, 2 x USB 2. 0 Ports
    • Your tiny, dual-display, desktop computer and robot brains, smart home hub, media centre, networked AI core, factory controller, and much more with Raspberry Pi 4.

    Completely upgraded, re-engineered Faster, more powerful

    You'll recognise the basic shape and size, so you can simply drop your new Raspberry Pi into your old projects for an upgrade; and as always, we've kept all our software backwards-compatible, so what you create on a Raspberry Pi 4 will work on any older models you own too.

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    Price-5% $54.29
    List: $56.99    		$51.78$62.49$69.49-29% $49.91
    List: $69.99    		$56.99
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    Customer Ratings
    4.74.7 out of 5 stars18,889
    4.44.4 out of 5 stars336
    4.74.7 out of 5 stars793
    4.64.6 out of 5 stars617
    4.64.6 out of 5 stars423
    4.64.6 out of 5 stars93
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    Customer reviews

    4.7 out of 5 stars
    18,889 global ratings

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    Customers say

    Customers find the Raspberry Pi 4 Model B 2019 performs well, with one mentioning it runs diet pi with pihole effectively, and they appreciate its speed without lag or stuttering. The device is easy to set up and use, with one customer noting the simple OS installation process, and they like its compact size, with one describing it as a mini gaming PC. Customers praise its build quality and power efficiency, with one highlighting its 15-watt power consumption, and consider it good value for money. The WiFi connectivity receives mixed feedback, with several customers reporting connection issues.

    AI-generated from the text of customer reviews

    Select to learn more

    178 customers mention "Functionality"152 positive26 negative

    Customers are satisfied with the functionality of the Raspberry Pi 4, reporting that it works great and has no issues, with one customer specifically mentioning successful operation with pihole running on Diet Pi.

    "Works as described. Quality build. Easy to use and set up. Low noise level when running. For perfectly with the set up I have. Fun and easy to do!..." Read more

    "...This flexibility makes it a great device for hobbyists, students, and rapid-prototyping...." Read more

    "...power, connectivity options, and compact design make it a top choice for hobbyists, educators, and professionals alike...." Read more

    "Bought during the RPi craze and shortage. Worked great for what I needed though and is still ticking away." Read more

    162 customers mention "Value for money"143 positive19 negative

    Customers find the single board computer to be good value for money, with one customer specifically noting its amazing microprocessor value for hobbyist applications.

    "The Raspberry Pi 4 is a good balance of performance and price. It is more powerful than the Pi-Zero, but cheaper than the newer model 5." Read more

    "...Not to mention, the low price point makes it accessible to anyone who wants to experiment with computing...." Read more

    "The price point and quality make these SBMCs an ideal makers tool." Read more

    "...But if you don't, this is a very low cost way to get into the world of nuts-and-bolts computer tinkering, and for that reason it more than deserves..." Read more

    60 customers mention "Speed"50 positive10 negative

    Customers find the single board computer fast, noting it boots up quickly and runs without lag or stuttering, with impressive processing power and increased data transfer speeds comparable to a good phone.

    "The Raspberry Pi 4 is a good balance of performance and price. It is more powerful than the Pi-Zero, but cheaper than the newer model 5." Read more

    "...The device runs smoothly and without any lag or stuttering, even when playing 1080p H265 videos...." Read more

    "...Pros: Impressive Processing Power: The quad-core 64-bit processor on the Raspberry Pi 4 Model B ensures a significant boost in processing..." Read more

    "...and installing Raspberry OS was simple and the device boots and resets very rapidly. The included apps are largely open source and functional." Read more

    51 customers mention "Ease of setup"42 positive9 negative

    Customers find the single board computer easy to set up and use, with one customer specifically mentioning that downloading and installing Raspberry OS was simple.

    "Works as described. Quality build. Easy to use and set up. Low noise level when running. For perfectly with the set up I have. Fun and easy to do!..." Read more

    "...Its wide range of capabilities, ease of use, and broad community support make it an excellent choice for anyone who wants to experiment with..." Read more

    "...Downloading and installing Raspberry OS was simple and the device boots and resets very rapidly...." Read more

    "...Raspberry Pis also are super easy to setup with their own flashing software from their site...." Read more

    32 customers mention "Size"23 positive9 negative

    Customers appreciate the Raspberry Pi's compact size, describing it as a great small computer with a great design, and one customer mentions it fits perfectly inside a miniature Nintendo box.

    "...The small size of the device also makes it ideal for use as a portable media center, which is perfect for on-the-go entertainment...." Read more

    "...Its impressive processing power, connectivity options, and compact design make it a top choice for hobbyists, educators, and professionals alike...." Read more

    "...That USB2.0 on the 3b+ not only hindered my harddrive performance, but also my network performance...." Read more

    "...It has wifi, it's small, looks amazing and very snug esp when you have a case...." Read more

    31 customers mention "Build quality"28 positive3 negative

    Customers praise the Raspberry Pi's build quality, describing it as solid and stable, with one customer noting it handles physical stress well.

    "Works as described. Quality build. Easy to use and set up. Low noise level when running. For perfectly with the set up I have. Fun and easy to do!..." Read more

    "...Or even hardware development, with its robust busses and interfaces...." Read more

    "...Immensely capable hardware and software for the price, from the biggest company in the game...." Read more

    "...a nice fan-equipped case and you can overclock this bad boy very, very safely and quite easily...." Read more

    30 customers mention "Power"27 positive3 negative

    Customers are impressed by the single board computer's power, noting it is efficient and consumes only 15 watts, with one customer highlighting its 30-pin bus design.

    "...It is more powerful than the Pi-Zero, but cheaper than the newer model 5." Read more

    "...I highly recommend the Raspberry Pi 4 to anyone who is looking for a powerful and versatile computing device at an affordable price...." Read more

    "...Pi 4 Model B has proven to be an outstanding computing marvel that delivers power and versatility in a compact package...." Read more

    "...There is a 30-pin bus affording power, switching and feedback for external devices...." Read more

    28 customers mention "Wifi connectivity"13 positive15 negative

    Customers have mixed experiences with the Raspberry Pi's WiFi connectivity, with some reporting no signal or the device stopping to connect, while others find it works well.

    "...the system a week after the return window closed and had the Wifi fail within 2 days, SD card reader has had constant issues...." Read more

    "...Its impressive processing power, connectivity options, and compact design make it a top choice for hobbyists, educators, and professionals alike...." Read more

    "...ordered several of these, and the only issue was the built-in Wi-Fi occasionally dropping out...." Read more

    "...Wi-Fi and bluetooth are built in as is some sort of audio with a 3.5mm stereo jack provided...." Read more

    Tired of using phone to view solar output and monitor battery?
    5 out of 5 stars
    Tired of using phone to view solar output and monitor battery?
    It's a cheap way to have a small computer. I use it to connect to my Victron 150/45 solar controller and view solar output on 13" monitor which is connected via wireless hdmi transceiver/receiver. The monitor is at one end of my RV while the solar stuff including the PI is at the other end. I loaded the Venus OS which actually took me a couple of days to understand and install. I watched a lot of YT videos. The wireless TX and RX can be found on Amazon for 20.00. I also made my own VE direct cable, more YT videos. All said and done I saved a few hundred dollars not having to pay for expensive Cerbo GX, but put in a lot of time which I have plenty of at age 66.
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    Top reviews from the United States

    • Makros
      5.0 out of 5 stars handy for experimenting.
      Reviewed in the United States on January 27, 2025
      Size: 4GBVerified Purchase
      The Raspberry Pi 4 is a good balance of performance and price. It is more powerful than the Pi-Zero, but cheaper than the newer model 5.
      One person found this helpful
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    • Kyle Hill
      5.0 out of 5 stars The best single-board computer on the market
      Reviewed in the United States on April 15, 2023
      Size: 2GBVerified Purchase
      I've owned many Raspberry Pi boards over the years, but the Raspberry Pi 4 is by far the most capable desktop-replacement board to-date. The wide software and documentation support within the community is phenomenal, making it extremely easy to get started with the device. Not to mention, the low price point makes it accessible to anyone who wants to experiment with computing.

      One of the most impressive features of the Raspberry Pi 4 is its easy-to-access GPIO pins, which allow for a variety of expansion options. This flexibility makes it a great device for hobbyists, students, and rapid-prototyping. The large ecosystem of expansion HATs offers endless expansion options.

      I primarily use my Raspberry Pi 4's as dedicated media center computers for Kodi, and they work flawlessly. The device runs smoothly and without any lag or stuttering, even when playing 1080p H265 videos. The small size of the device also makes it ideal for use as a portable media center, which is perfect for on-the-go entertainment.

      Overall, I highly recommend the Raspberry Pi 4 to anyone who is looking for a powerful and versatile computing device at an affordable price. Its wide range of capabilities, ease of use, and broad community support make it an excellent choice for anyone who wants to experiment with computing or build innovative projects
      Customer image
      Kyle Hill
      5.0 out of 5 stars
      The best single-board computer on the market

      Reviewed in the United States on April 15, 2023
      I've owned many Raspberry Pi boards over the years, but the Raspberry Pi 4 is by far the most capable desktop-replacement board to-date. The wide software and documentation support within the community is phenomenal, making it extremely easy to get started with the device. Not to mention, the low price point makes it accessible to anyone who wants to experiment with computing.

      One of the most impressive features of the Raspberry Pi 4 is its easy-to-access GPIO pins, which allow for a variety of expansion options. This flexibility makes it a great device for hobbyists, students, and rapid-prototyping. The large ecosystem of expansion HATs offers endless expansion options.

      I primarily use my Raspberry Pi 4's as dedicated media center computers for Kodi, and they work flawlessly. The device runs smoothly and without any lag or stuttering, even when playing 1080p H265 videos. The small size of the device also makes it ideal for use as a portable media center, which is perfect for on-the-go entertainment.

      Overall, I highly recommend the Raspberry Pi 4 to anyone who is looking for a powerful and versatile computing device at an affordable price. Its wide range of capabilities, ease of use, and broad community support make it an excellent choice for anyone who wants to experiment with computing or build innovative projects
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      13 people found this helpful
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    • Deedle
      5.0 out of 5 stars Love it!
      Reviewed in the United States on January 29, 2025
      Size: 4GBVerified Purchase
      Works as described. Quality build. Easy to use and set up. Low noise level when running. For perfectly with the set up I have. Fun and easy to do! Would buy again!
      Helpful
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    • Denis Rose
      5.0 out of 5 stars Pi at a great price, happy shopper
      Reviewed in the United States on March 29, 2025
      Size: 4GBVerified Purchase
      The real deal I am a happy customer
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    • Phillip
      5.0 out of 5 stars Raspberry Pi 4 Model B - A Powerful Miniature Computing Marvel
      Reviewed in the United States on December 22, 2023
      Size: 4GBVerified Purchase
      The Raspberry Pi 4 Model B has proven to be an outstanding computing marvel that delivers power and versatility in a compact package. Here's why it deserves a glowing review:

      Pros:

      Impressive Processing Power: The quad-core 64-bit processor on the Raspberry Pi 4 Model B ensures a significant boost in processing capabilities. It handles a variety of tasks with remarkable speed and efficiency.

      Ample RAM: With 4GB of RAM, this mini-computer is well-equipped to handle multitasking and memory-intensive applications smoothly. It's a noticeable improvement from previous Raspberry Pi models and caters to a broad range of projects.

      Enhanced Connectivity: The inclusion of WiFi and Bluetooth capabilities adds a layer of convenience. Seamless wireless connectivity simplifies networking, and Bluetooth support opens up possibilities for various peripherals and devices.

      Dual 4K Display Support: The ability to support dual 4K displays is a game-changer. It's perfect for projects requiring high-resolution visuals and provides a level of flexibility that expands the range of applications.

      GPIO Pins: The GPIO pins are a hallmark feature of Raspberry Pi, and the Model 4 B continues this tradition. They enable interfacing with a plethora of sensors, actuators, and electronic components, making it ideal for DIY electronics projects.

      Versatile USB Ports: The multiple USB ports, including USB 3.0, offer versatility in connecting peripherals. It's a practical feature that accommodates a variety of devices without the need for additional adapters.

      Energy-Efficient Design: Despite its powerful performance, the Raspberry Pi 4 Model B remains energy-efficient. It's an eco-friendly choice for those conscious of power consumption.

      Conclusion:

      The Raspberry Pi 4 Model B stands as a testament to the continued innovation in the world of single-board computers. Its impressive processing power, connectivity options, and compact design make it a top choice for hobbyists, educators, and professionals alike. Whether you're into coding, electronics, or simply want a versatile computing solution, the Raspberry Pi 4 Model B is an excellent investment that opens up a world of possibilities. Highly recommended!
      22 people found this helpful
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    • Bob Barker
      4.0 out of 5 stars Worked great, hard to find and was spendy
      Reviewed in the United States on December 29, 2024
      Size: 4GBVerified Purchase
      Bought during the RPi craze and shortage. Worked great for what I needed though and is still ticking away.
      One person found this helpful
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    • Michael W. Thies
      5.0 out of 5 stars Exceptionally Versatile and Affordable Mini Computer
      Reviewed in the United States on March 1, 2024
      Size: 4GBVerified Purchase
      This was my first Raspberry Pi used for a robot kit. It won't be my last as there are a huge range of applications.

      Know that this is a completely bare computer. No power supply. No interfaces (keyboard, etc.) of any sort. No permanent storage. To actually set up the device you need a power supply, a mini SD card to act as the "drive," a keyboard, mouse and monitor.

      There are four standard USB connections (2xType3; 2xType2), two LAN connections and two MICRO HDMI connectors for monitors. There is a 30-pin bus affording power, switching and feedback for external devices. Wi-Fi and bluetooth are built in as is some sort of audio with a 3.5mm stereo jack provided.

      Downloading and installing Raspberry OS was simple and the device boots and resets very rapidly. The included apps are largely open source and functional.
      6 people found this helpful
      Helpful
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    • Jim
      5.0 out of 5 stars Does what i need it to do
      Reviewed in the United States on January 23, 2025
      Size: 4GBVerified Purchase
      I use this in a DIY weather station and web server running Debian. Zero issues.
      Helpful
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    Top reviews from other countries

    Translate all reviews to English
    • Cliente de Amazon
      5.0 out of 5 stars : Raspberry Pi 4, potencia y versatilidad para proyectos
      Reviewed in Spain on February 16, 2025
      Size: 4GBVerified Purchase
      La Raspberry Pi 4 es una excelente opción para quienes buscan una mini computadora potente y asequible. Con su capacidad de hasta 8GB de RAM, puertos USB 3.0, soporte para dos pantallas 4K y un rendimiento general impresionante, se adapta a una amplia variedad de proyectos, desde centros de medios hasta servidores y experimentos de electrónica. Además, su tamaño compacto y su bajo consumo de energía hacen de ella una solución muy versátil. Ideal tanto para aficionados como para profesionales. ¡Altamente recomendable!
      Report
    • Andrew Lane
      5.0 out of 5 stars Good performance from a tiny little computer
      Reviewed in Australia on April 27, 2020
      Size: 4GBVerified Purchase
      I use my Pi to run a Octoprint server for my Ender 3 Pro. It does feel like overkill for this use case but I do get the peace of mind knowing that the performance of the Pi is not going to affect my 3D printing in any negative way. I may eventually decide to repurpose this Raspberry Pi 4 model B for something more deserving of it's performance (I was thinking of using it as the heart of a file server but I have to find someway to attach multiple SATA harddrives to it) and replace it with a earlier model but until then, the Pi 4 will soldier on as my Octoprint server.
      Report
    • Seven Driver
      5.0 out of 5 stars Fairer Händler, guter Service
      Reviewed in Germany on February 14, 2025
      Size: 2GBVerified Purchase
      Der Raspi ist leider nach 2 Monaten defekt gewesen. Aber das ist halt Consumer-Elektronik. Umtausch durch den Händler war problemlos möglich.
      Danke dafür und gerne wieder!
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    • Vincenzo Villa
      5.0 out of 5 stars Fantastico!
      Reviewed in Italy on September 21, 2019
      Size: 4GBVerified Purchase
      Uso Raspberry Pi da quando è uscito sette anni fa, passando per tutti i vari modelli: finalmente, dopo un'attesa di tre mesi, ho messo le mani anche sulla versione da 4 GB. Fantastica (come sempre, del resto...)

      (Se già conoscete RPi, saltate questa prima parte)
      Questo piccolo computer ha i suoi punti di forza nel consumo ridotto, nel costo e soprattutto nell'immensa comunità di supporto. Può essere utilizzato come computer generico o per ospitare servizi casalinghi che devono sempre rimanere accesi (da torrent a server multimediale); offre il meglio di sé quando vi interessa interfacciarvi con l'hardware auto-costruito.
      Nel pacco troverete solo la scheda; per renderlo operativo occorre:
      * una microSD, almeno 8 GB se volete l'interfaccia grafica; deve inoltre essere veloce se volete spremere al massimo RPi
      * un alimentatore USB-C, da 2-3 A.
      * un cavo micro HDMI, un mouse ed una tastiera. Indispensabile per chi comincia, ma opzionale per molti usi
      * Utile, ma non strettamente necessario, un dissipatore/ventolina, soprattutto se lo userete dentro un case.
      Potete collegarci ben due monitor HDMI, anche 4k. Come sistema operativo ho praticamente sempre usato solo Rasbian (free), ma ne esistono anche altri, ed altri ancora seguiranno.

      (per chi usa già RPi)
      Questa versione 4 è il potenziamento della precedente anche se stavolta alcuni aspetti sono a mio parere un miglioramento sostanziale. Cosa è cambiato:
      * La rivoluzione è (finalmente!) l’incremento della RAM. Questo da 4 GB è il top. Dipende da cosa lo usate per fare, ma in alcuni casi era davvero necessaria
      * La rete ora è davvero da 1 Gbit/s; la versione precedente lo era solo sulla carta e non andava oltre i 300 Mbit/s, ora arriva a 950 Mbit/s (testata con iperf)
      * Arriva USB3, cosa che permette di usare decentemente un SSD “esterno”.
      * L'aumento di prestazioni del processore è significativo, non tanto per il piccolo aumento del clock, quanto per la diversa architettura. In rete trovate i numeri; all’atto pratico questo da 4GB è davvero usabile come PC, soprattutto se usate una SD particolarmente performante (o montate / su un SSD USB3)
      * Possibilità di doppio monitor, anche da 4k (e anche a 60 Hz, se ne usate solo uno). Non penso sfrutterò la cosa, in genere lo uso headless, ma apre possibilità interessanti

      Non tutto è oro, ovviamente:
      * Qualche rischio di surriscaldamento. Per ora lo sto usando senza alcun problema prevalentemente aperto, senza monitor e senza alcun dissipatore. Situazione un po' diversa se collegate un monitor 4K@60Hz: probabilmente nelle giornate calde vi servirà un dissipatore (ed anche una ventolina, se lo chiuderete in un case)
      * Serve un alimentatore di qualità (assorbe qualcosa più di 1 A a pieno carico e senza nulla di collegato, quindi meglio stare sui 2 o 3 A); il connettore USB-C ha praticamente eliminato i problemi di cavo delle precedenti versioni con micro-USB. Per i test di temperatura consiglio "cpuburn" (da cercare in rete)
      * Purtroppo il PoE continua ad essere una costosa opzione (peccato: sarebbe stato davvero utile!) Io ho preso questo
      * Per chi già aveva una vecchia versione del Raspberry, serve qualche adattamento: cavo micro HDMI, alimentatore USB-C, incompatibilità con i vecchi case… Per la micro-SD, serve ovviamente la versione aggiornata di Buster (Raspbian 10); è invece incompatibile con tutte le precedenti versioni di Raspbian, con Windows 10 core e con molti altri OS (che non sto usando).

      Come funziona:
      * Perfetto per ospitare servizi, anche pesanti. Ho fatto un test con con un server web e database piuttosto pesanti su SSD USB-3 e direi assolutamente usabile! In questo il miglioramento di rete, RAM, USB e processore rispetto al 3B+ fanno davvero la differenza
      * Buono come PC “normale”. Nulla di paragonabile ad un i7 o un Ryzen, ovviamente, ma le prestazioni sono migliori di quelle di molti PC entry-level (ma ad un costo ben diverso…).

      Che dire: sta-consigliato! I difetti ovviamente ci sono, ma la RAM in più mette tutto il resto in secondo piano.

      Il prezzo delle varie versioni ora è allineato a quello ufficiale e quindi la scelta dipende solo dalle vostre esigenze. Per evitare fregature vi metto i prezzi "giusti":
      * La versione da 1 GB a 40-45 euro incluse tasse e spedizione, per la sola scheda (non un "kit")
      * La versione da 2 GB a 50-55 euro
      * Questa versione da 4 GB a circa 65 euro
      * Purtroppo le versioni precedenti, più che sufficienti per una miriade di usi, ora sono fuori produzione ed hanno quindi assunto prezzi "da antiquariato" e non vale più la pena acquistarle (a meno di super-offerte sotto i 30 euro)
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    • Frans Hoijnck Papendrecht
      5.0 out of 5 stars Kleinst mogelijke desktop pc
      Reviewed in the Netherlands on April 9, 2021
      Size: 4GBVerified Purchase
      Flinke verbetering tov model 3. Van dit model 4 bestaat ook een duurdere 8 GB uitvoering, maar daar heb je alleen profijt van als je een 64-bits programma draait (bijvoorbeeld Ubuntu Groovy Gorilla 20.10). Op een 64-bits uitvoering van de eigen Raspberry Linux (gebaseerd op Debian 10) is het nog even wachten, de standaard is nog steeds 32-bits (april 2021).
      Goed geïnstalleerd is de raspbberry pi model 4 al perfect te gebruiken als desktop PC vervanger, hij is snel en heeft wifi en bluetooth ingebouwd en je televisie kan (via hdmi aansluiting) desnoods als beeldscherm worden gebruikt, haarscherp.
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