Looking at the wireless spec, Raspberry Pi Zero 2 W comes with Synaptics BCM43436 ( Synaptics acquire Broadcom's Wireless IoT Business) that offers single-band (2.4GHz) WiFi of IEEE 802.11 b/g/n.

For the RAM, again all of them come with DDR2 and Raspberry Pi 3 Model A+ has the same size as the Raspberry Pi Zero 2 W - 512MB.

Let's compare with Raspberry Pi 3 Model B+ and 3A+ :) You will be surprised to know they have the same CPU architecture which is Quad-core, 64-bit ARM Cortex-A53, with 3B+ and 3A+ being clocked at a higher speed of 1.4GHz. Raspberry Pi 3 Model B was released in 2016, it might not be fair to compare a new product in 2021 with it. The Raspberry Pi Zero 2 W should deliver better wireless performance with the improved PCB antenna design too. Bluetooth is upgraded to V4.2 from V4.1 while preserving the BLE and WiFi IEEE 802.11 b/g/n (single-band, 2.4GHz). Since there is none in the market, they designed the wire-bond for RP3A0 SiP, how awesome is that?īesides the upgrade of the CPU, there is also a slight improvement in the wireless specification. However, as explained by Eben Upton (Founder and CEO of Raspberry Pi Trading) in many interviews, the main constraint in upgrading Raspberry Pi Zero is finding a RAM package that matches the preferred processor die, stacking it to form another PoP. Raspberry Pi Zero W (V1) is using BCM2835 as the bottom IC and 512MB RAM is 'stacked' on it as Package on Package (PoP). Due to the limited space of the Raspberry Pi Zero board and single-layer PCB component placement (to reduce manufacturing process and cost), the CPU and RAM need to be 'stacked'. The RP3A0 is a SiP that wire-bond the BCM2710A1 die with 512MB RAM, and this is done in-house by Raspberry Pi Engineering Team, thus the Raspberry Pi logo and the ' RP'30A on the CPU package. For multi-threaded, the quad-core performance is 5.2x faster than the single-core CPU. For single-threaded performance, it is 40% faster than earlier versions too. From our testing, using the 32GB MakerDisk preloaded with Raspberry Pi OS, Raspberry Pi Zero 2 W boots into GUI just within ~20 seconds while the earlier Raspberry Pi Zero W takes ~70 seconds. Booting into Raspberry Pi OS desktop GUI is 3X faster than the original Zero W board. With this upgrade alone, there is a tremendous improvement.

At its heart is a Raspberry Pi RP3A0 system-in-package (SiP), integrating a Broadcom BCM2710A1 die with 512MB of LPDDR2 SDRAM. The board incorporates a Quad-core 64-bit ARM Cortex-A53 CPU, clocked at 1GHz.

Lithium Ion Rechargeable Battery and Charger.

Lead Acid Rechargeable Battery and Charger.

Home assistant pi zero w