RPi Zero 2 W with Pre-Soldered Header, Five Times as Fast. with a quad-core 64-bit ARM Cortex-A53 processor clocked at 1GHz and 512MB of SDRAM, Zero 2 is up to five times as fast as the original Pi Zero. It is a good choice for smart home applications and other IoT projects. ^^ Broadcom BCM2710A1, 1GHz quad-core 64-bit Arm Cortex-A53 CPU. 512MB LPDDR2 SDRAM. 2.4GH z 802.11 b/g/n wireless LAN. Bluetooth 4.2, Bluetooth Low Energy (BLE), onboard antenna. ^^ As for heat dissipation concern, Zero 2 W uses thick internal copper layers to conduct heat away from the processor, sustaining higher performance without higher temperature.
^^ Mini HDMI port and micro USB On-The-Go (OTG) port. microSD card slot. CSI-2 camera connector. HAT-compatible 40-pin header footprint (unpopulated). Micro USB power.