Читать книгу Raspberry Pi User Guide - Eben Upton - Страница 10

While the Plus and prior boards all used the same BCM2835 SoC, the Raspberry Pi 2 (see Figure 1-4) was the first to feature a brand new processor: the BCM2836 SoC. Featuring four processor cores to the original's lone core, the BCM2836 offers anything between four and eight times the performance of its predecessor – making everything from word processing to compiling code run faster. The board also boasts 1 GB (1024 MB) of RAM, double the maximum previously available, making multitasking and memory-intensive applications smoother and more responsive.

FIGURE 1-4: The Raspberry Pi 2 board

Layout-wise, however, little has changed from the Model B+. The Raspberry Pi 2 features the same 40-pin GPIO header, four USB ports, 10/100 wired network port, and all other ports. If you have a case or add-on device which works with a Model B+, it will also work just fine with the Raspberry Pi 2 – but may run considerably faster!

The Raspberry Pi 2 boasts wider software compatibility than its predecessors: as well as Raspbian, the recommended Raspberry Pi operating system, the Pi 2 can run operating systems such as Ubuntu and Windows 10 IoT Core not available for the older models.