Video, part one, in depth insights into the hardware features of the Raspberry Pi four model Bay. In this video, we will have a more in depth look into the CPU, GPU RAM, the status LEDs and the GPIO headers of the Raspberry Pi four B. In the last video, we only did a brief overview of the different components on the Raspberry Pi four board. In this video, we will dive deep into its features. We will first start with the brain of the Raspberry Pi four Model B. It is a 64 bit quad core Broadcom BCM, two seven double one SOC that runs at 1.5 gigahertz.
On paper. It's just 100 megahertz faster than the Raspberry Pi threes, Broadcom BCM, two a three seven chip, but on real life use. It's a two to three times faster than the older generation. This is because the pifo uses ARM Cortex A 72 cores, rather than the older Cortex A 53. The reason why a 72 cores are faster at the same speed is due to its architecture that prioritizes performance over efficiency. This is one of the reasons that FIFO can get a bit toasty if Qur'an without a heat sink and a fan for a very long time.
The SOC also has a new model graphics processing unit, named Broadcom video CT six, which runs at 500 megahertz and supports OpenGL ES three. The new GPU is two generations ahead of any GPUs used prior to win the PI lineup. The GPU also has a hardware decoder for 4k and 1080 p video at 60 frames per second. If you want to know more about the CPU and the GPU, please check out the links in the resources section. Next comes the memory. It comes in three variants, you choose between one GB, two GB or four GB RAM models based on the applications.
Amazingly, all the ram options are LP DDR four, and running at 2400 megahertz. These are commonly referred to as synchronous, DRAM, or SDRAM. These are the latest and greatest ram chips that are commonly used in mobile devices like smartphones and laptops. In addition to the increased bandwidth, having more memory is a huge deal, particularly for web surfing on the pifo no matter how fast your processor RAM and GPU are, if your storage is slow, everyday tasks like opening apps and fires will be laggy. like old Raspberry Pi's, the four B's primary storage device is it's nice SD card reader, which is convenient, but a bit constrained. According to the PI Foundation, pi four B has a top transfer rate of 50 megabytes per second, which has doubled the speed of the reader on the PI three B plus.
Next, let's check out the red and green LEDs Mark p wr and AC T, respectively. When you power your Raspberry Pi, the red LED will light up continuously. If there is a problem with the power received, the red LED will start blinking. The green LED indicates SD card activity. It will flash when read or write operation is in progress. Additionally, the green LED will also flash in specific patterns to indicate early board problems.
The following table shows the different green LED flash patterns and their meaning. The real star of the show On any Raspberry Pi is a set of 14 general purpose input and output pins. The GPIO pins are integrated into the circuit boat of the computer. Their behavior can be controlled by the user to allow them to read data from sensors and control components like LVDS, motors, and displays. In the label diagram shown here, you can see that there are different types of GPIO pins that serve different purposes. The diagram shows two pin numbers attached to every GPIO pin.
It has a bold number, which is based on the physical location of the pin and a Broadcom SOC pin numbering, which uses the pin numbering of the pin directly connected from the SOC itself. When you start tinkering with the GPIO, you should only follow one of the two conventions. In the diagram, we can see power pins like five years Three v three and ground. We can also see several GPIO pins. You can also see several SPI eye to see and you aren't pins. In addition to the standard peripheral options found on the old PI's extra ITC you aren't an SPI peripherals have been added to the BCM 2711 chip and are available as further mux options on the PI four.
This gives users much more flexibility. When attaching add on hardware as compared to older models. You can check out the GPIO functions table provided in the resources section to no more summary. In this video we have covered the following topics the CPU and GPU, the RAM, the functions of the status LEDs GPIO headers. In the next video, we will have a more in depth look into other hardware features of the rest Very powerful Model B, like ports, connectors, networking chip and controller chip.