Model	Chromecast (1st generation)	Chromecast (2nd generation)	Chromecast Audio	Chromecast Ultra	Chromecast (3rd generation)
Release date	July 24, 2013	September 29, 2015	September 29, 2015	November 6, 2016	October 10, 2018
Sales discontinued	September 29, 2015	October 10, 2018	January 11, 2019	—	—
Launch price	US$35	US$35	US$35	US$69	US$35
System on a chip	Marvell Armada 1500 Mini 88DE3005-A1	Marvell Armada 1500 Mini Plus 88DE3006	Marvell Armada 1500 Mini Plus 88DE3006	-	-
Memory	512 MB RAM DDR3L	512 MB RAM DDR3L	256 MB RAM DDR3L	-	-
Storage	2 GB	256 MB	256 MB	-	-
Display	1080p	1080p @ 30fps or 720p @ 60fps	N/A	4K Ultra HDHigh dynamic range (HDR10, Dolby Vision)	1080p @ 60fps
Audio DAC	N/A	N/A	AKM AK4430 192 kHz 24-Bit DAC	N/A	-
Connectivity	HDMI (can use CEC)Wi-Fi (802.11 b/g/n @ 2.4 GHz)Ethernet (with optional USB power adapter)	HDMI (can use CEC)Wi-Fi (802.11 b/g/n/ac @ 2.4/5 GHz)Ethernet (with optional USB power adapter)	Combined 3.5 mm audio jack and mini-TOSLINK socket Wi-Fi (802.11 b/g/n/ac @ 2.4/5 GHz)Ethernet (with optional USB power adapter)	HDMI (can use CEC)Wi-Fi (802.11 b/g/n/ac @ 2.4/5 GHz)Ethernet (with included USB power adapter)	HDMI (can use CEC)Wi-Fi (802.11 b/g/n/ac @ 2.4/5 GHz)Ethernet (with optional USB power adapter)
Power	Micro-USB (power adapter or USB port)	Micro-USB (power adapter or USB port)	Micro-USB (power adapter or USB port)	Micro-USB (power adapter required)	Micro-USB (power adapter or USB port)
Dimensions	72 mm × 35 mm × 12 mm (2.83 in × 1.38 in × 0.47 in)	51.9 mm × 51.9 mm × 13.49 mm (2.04 in × 2.04 in × 0.53 in)	51.9 mm × 51.9 mm × 13.49 mm (2.04 in × 2.04 in × 0.53 in)	58.2 mm × 58.2 mm × 13.70 mm (2.29 in × 2.29 in × 0.54 in)	51.81 mm × 51.81 mm × 13.8 mm (2.04 in × 2.04 in × 0.54 in)
Weight	34 g (1.20 oz)	39.1 g (1.38 oz)	30.7 g (1.08 oz)	47 g (1.66 oz)	40 g (1.4 oz)
Model Number	H2G2-42	NC2-6A5	RUX-J42	GA3A00403A14	GA00439