Minimum-Eth,Wifi,CPU,RAM,Released,Price,Power | Comparison tables

Link	Raspberry Pi B	Raspberry Pi A+	Raspberry Pi 2	Raspberry Pi Zero	Raspberry Pi 3	Raspberry Pi Zero W	Raspberry Pi Zero WH	Raspberry Pi 3 B+	Raspberry Pi 3 Model A+	Raspberry Pi 4 B	Raspberry Pi 4 B 8GB
Image
Release date	Feb. 15^th 2012	Nov. 10^th 2014	Feb. 1^st 2015	Nov. 30^th 2015	Feb. 29^th 2016	Feb. 28^th 2017	Jan. 12^th 2018	Mar. 14^th 2018	Nov. 15^th 2018	Jun. 24^th 2019	May 28^th 2020
Price	$ 35	$ 35	$ 35	$ 5	$ 35	$ 10	$ 15	$ 35	$ 25	$ 35	$ 75
RAM	256 MB	256 MB	1 GB	512 MB	1 GB DDR2	512 MB	512 MB	1 GB DDR2	512 MB DDR2	1 GB , 2 GB, 4 GB, 8GB LPDDR4	8 GB LPDDR4
USB	Yes 2x USB 2.0	Yes 1x USB2.0	Yes 4x USB2.0	Yes 1x micro OTG	Yes 4x USB2.0	Yes 1x micro OTG	Yes 1x micro OTG	Yes 4x USB2.0	Yes 1x USB 2.0	Yes 2x USB3.0 + 2x USB2.0 + USB-C OTG	Yes 2x USB3.0 + 2x USB2.0 + USB-C OTG
Ethernet	Yes 10/100M	No	Yes 10/100M	No	Yes 10/100M	No	No	Yes Gigabit - Over USB 2.0	No	Yes Gigabit	Yes Gigabit
HDMI port	Yes	Yes full HDMI	Yes full HDMI	Yes mini HDMI	Yes full HDMI	Yes mini HDMI	Yes mini HDMI	Yes full HDMI	Yes full HDMI	Yes 2x micro HDMI	Yes 2x micro HDMI
SD/MMC	Yes SD, SDHC and SDXC up to 2TB	Yes microSD	Yes microSD	Yes microSD	Yes microSD	Yes microSD	Yes microSD	Yes microSD	Yes microSD	Yes microSD	Yes microSD
Power Over Ethernet	No	No	No	No	No	No	No	- with PoE Hat	No	- with PoE Hat	- with PoE Hat
Wi-Fi	- Via USB dongle	No	No	No	Yes 802.11n	Yes 802.11n	Yes 802.11n	Yes 2.4GHz and 5GHz 802.11 b/g/n/ac	Yes 2.4GHz and 5GHz 802.11 b/g/n/ac	Yes 2.4GHz and 5GHz 802.11 b/g/n/ac	Yes 2.4GHz and 5GHz 802.11 b/g/n/ac
Power sources	microUSB or GPIO	microUSB or GPIO	microUSB or GPIO	microUSB, GPIO	microUSB or GPIO	microUSB, GPIO	microUSB or GPIO	microUSB, GPIO	microUSB, GPIO	USB-C	USB-C