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Model B | Model B+ | Gen. 2, Model B | Gen. 3, Model B |
Broadcom BCM2835 | Broadcom BCM2835 | Broadcom BCM2836 | Broadcom BCM2837 |
ARMv6 single core | ARMv6 single core | ARMv7 quad core | ARMv8 quad core |
700 MHz | 700 MHz | 900 MHz | 1200 MHz |
512 MB SDRAM | 512 MB SDRAM | 1024 MB SDRAM | 1024 MB SDRAM |
26 GPIOs | 40 GPIOs | 40 GPIOs | 40 GPIOs |
2 x USB 2.0 | 4 x USB 2.0 | 4 x USB 2.0 | 4 x USB 2.0 |
802.11n Bluetooth 4.1 |