Three and a half years after Raspberry Pi 3 Raspberry Pi Foundation new generations of boards . Model "B" is already available for order, new SoC BCM2711, which is a completely redesigned version of the previously used BCM283X chip, manufactured using the 28nm process technology. The price of the board has remained unchanged and, as before, is 35 US dollars.
The SoC still includes four 64-bit ARMv8 cores and runs at only a slightly increased frequency (1.5GHz instead of 1.4GHz). At the same time, the change in the technical process made it possible to replace the Cortex-A53 with a higher-performance Cortex-A72 core, which brought performance to a new level. Additionally, a transition to the use of LPDDR4 memory has been made, which, compared with the previously used LPDDR2 memory, provides a threefold increase in bandwidth. As a result, in performance tests, the new board outperforms the previous Raspberry Pi 3B+ model by 2-4 times.
Other significant differences include the inclusion of a PCI Express controller, two USB 3.0 ports (plus two USB 2.0 ports), and two Micro HDMI ports (previously used one full-size HDMI), allowing you to display images on two monitors with 4K quality. The VideoCore VI graphics accelerator has been significantly updated, which supports OpenGL ES 3.0 and is able to decode H.265 video at 4Kp60 quality (or 4Kp30 on two monitors). Power can be supplied through the USB-C port (previously used USB micro-B), through the GPIO, or through an optional PoE HAT (Power over Ethernet).
Moreover, the long-standing problem with insufficient RAM size has been solved - the board is now available in 1, 2 and 4 GB RAM options (the cost is respectively $35, $45 and $55), which makes the new board a suitable solution for creating workstations, gaming platforms, servers , smart home gateways, robot control units and modern multimedia systems.
The Gigabit Ethernet controller has been improved and is now connected to the SoC via a separate RGMII bus, allowing for full performance claims. USB is now implemented through a separate VLI controller connected via PCI Express and providing a total throughput of 4Gbps. As before, the board is equipped with 40 GPIO ports, DSI (touch screen connection), CSI (camera connection) and a wireless chip that supports 802.11ac, 2.4GHz and 5GHz, and Bluetooth 5.0.
Simultaneously published a new distribution release , which provides full support for the Raspberry Pi 4. The release is also notable for the transition to the Debian 10 "Buster" package base (previously used by Debian 9), a significant redesign of the user interface and the use of the new Mesa V3D driver with significantly improved 3D support (including for available using OpenGL to speed up the browser). Two assemblies have been prepared for download - an abbreviated one () for server systems and complete () supplied with the user environment (an offshoot of LXDE). To install from about 35 thousand packages are available.
Source: opennet.ru