• RP2040 microcontroller chip designed by Raspberry Pi
• Dual-core Arm Cortex M0+ processor, the flexible clock running up to 133 MHz
• 264KB of SRAM, and 2MB of onboard Flash memory
• 26 × multi-function GPIO pins
• 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
• Onboard Temperature sensor

At the heart of the Raspberry Pi Zero W is a 1GHz BCM2710A1 with 64-bit ARM Cortex-A53 CPU  with 512MB RAM. Quite frankly, this Pi is about four times faster than the original Raspberry Pi and is only a fraction of the cost of the current RPi3.

• BCM2710A1 die Cortex-A53 CPU
• 512MB LPDDR2 DRAM
• 802.11b/g/n wireless LAN
• Bluetooth 4.2 / Bluetooth Low Energy (BLE)
•  MicroSD card slot
•  Mini HDMI and USB 2.0 OTG ports
• Micro USB power

• Quad-Core 64-bit Broadcom 2711, Cortex A72  Processor
• WLAN 802.11 b/g/n/ac (2,4 + 5,0 GHz)
• LAN RJ45 10/100/1000 Mbit (Gigabit LAN over USB 3.0)
• Operating Power 5V@3A  via USB Type-C Port
• Dual-Display Micro HDMI Ports which supports H 265 Decode for 4K Video @60p

• Model: Raspberry Pi-5  8GB
• Ram: LPDDR4X-4267 8GB  SDRAM
• PCIe 2.0 x1 interface for fast peripherals
• 5V/5A DC power (PD enabled)
• Real-Time Clock (RTC), powered by an external battery
• On-board power button