Apple TV 4K (1st generation) vs Apple TV HD

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TV 4K (1st generation) compared with TV HD

	AppleTV 4K (1st generation)	AppleTV HD
Overview
Released
Released	September 2017	October 2015
Video and audio
Resolution
Resolution	4K (better)	1080p
HDR
HDR	HDR10 and Dolby Vision (better)	None
Dolby Atmos
Dolby Atmos	Yes	No
Video
Video	H.264/HEVC SDR up to 2160p at 60 fps, Main/Main 10 profile; HEVC Dolby Vision Profile 5 and HDR10 Main 10 up to 2160p; HD and UHD TVs supported through HDMI	HEVC SDR up to 1080p, 30 fps, Main/Main 10 profile; H.264 up to 1080p, 60 fps, High or Main Profile level 4.2 or lower
HDR
HDR	Dolby Vision and HDR10; requires a compatible HDR television and content	–
Audio
Audio	Dolby Digital 5.1, Dolby Digital Plus 7.1 and Dolby Atmos; Atmos support added with tvOS 12 after launch; AAC, HE-AAC v1, MP3, Apple Lossless, FLAC, AIFF and WAV playback	AC-3 (Dolby Digital 5.1) and E-AC-3 (Dolby Digital Plus 7.1); Apple Lossless, FLAC, AIFF, WAV, AAC, HE-AAC and MP3
Performance
Software
Software	tvOS	tvOS
Storage
Storage	–	32 GB
Chip details
Chip details	Apple A10X Fusion with 64-bit architecture	A8 chip with 64-bit architecture
Memory
Memory	–	2 GB (9to5Mac, from Apple's developer documentation)
Storage
Storage	32 or 64 GB internal storage	32GB; a 64GB model was also sold at launch in 2015
Connections
Wi-Fi
Wi-Fi	Wi-Fi 5 (802.11ac)	Wi-Fi 5
Ethernet
Ethernet	Yes	Yes
Smart home hub
Smart home hub	Yes	–
Voice remote
Voice remote	Yes	Yes
Ports
Ports	HDMI 2.0a, Gigabit Ethernet and power inlet; HDMI cable sold separately; protected content requires HDCP	HDMI 1.4; 10/100BASE-T Ethernet; USB-C for service and support; IR receiver
Wi-Fi and Bluetooth
Wi-Fi and Bluetooth	802.11ac Wi-Fi with MIMO and simultaneous 2.4/5 GHz operation; Bluetooth 5.0; IR receiver; AirPlay from compatible Apple devices	802.11ac Wi-Fi with MIMO; Bluetooth 4.0
Smart home
Smart home	HomeKit home hub for remote access and automated accessory control	–
Remote
Remote	Siri Remote with touch surface, voice control, Bluetooth 4.0, IR transmitter, accelerometer and three-axis gyro; Lightning charging; 124 × 38 × 6.3 mm, 45 g; rechargeable battery rated for months of typical daily use	Siri Remote (1st generation) with touch surface, microphone, accelerometer and three-axis gyro, Bluetooth 4.0, IR transmitter and Lightning charging, 124 × 38 × 6.3 mm, 45 g; Siri Remote (2nd generation), with clickpad and Bluetooth 5.0, from May 2021
Design
Type
Type	Box	Box
Power
Power	Built-in mains power supply; remote charges by USB computer connection or a separate power adapter	Built-in power supply
Size
Size	35 × 98 × 98 mm; 425 g	35 × 98 × 98 mm (H × W × D); 425 g
In the box
In the box	TV 4K, Siri Remote, power cord, Lightning-to-USB cable and documentation	Apple TV HD, Siri Remote, power cord, Lightning to USB cable, documentation