2021-06-24

Apple TV 4K (2021) vs. Apple TV 4K (2017) vs. Apple TV HD

Apple has unveiled an upgraded Apple TV 4K (2nd generation). Here is how it compares in terms of specifications and features to the older Apple TV boxes.    Changes in the 2021 version compared to the 2017 version are marked in orange.    

Apple TV specifications

Apple TV 4K (2021)Apple TV 4K (2017)Apple TV HD (2015)
DesignBoxBoxBox
Dimensions (HxWxD)3.5 x 9.8 x 9.8 cm3.5 x 9.8 x 9.8 cm3.5 x 9.8 x 9.8 cm
Weight425 g425 g425 g
HardwareApple TV 4K (2021)Apple TV 4K (2017)Apple TV HD (2015)
SoCA12 BionicA10XA8
Technology node7nm10nm20nm
RAM4GB (TBC)3GB2GB
Storage capacity32/64GB32/64GB32/64GB
Storage typeNVMe SSDNVMe SSDSSD
Video/audioApple TV 4K (2021)Apple TV 4K (2017)Apple TV HD (2015)
HDMI versionHDMI 2.1HDMI 2.0bHDMI 1.4
Video outHDMI
Up to 4K60 DV
HDMI
Up to 4K60 DV
HDMI
Up to 1080p60
Video decoding4K60 DV/HDR10
4K60 SDR
4K30 DV/HDR10
4K60 SDR

1080p60 SDR
Video codecsHEVC
MPEG4
MPEG2
HEVC
MPEG4
MPEG2
HEVC
MPEG4
MPEG2
HDR formatsHDR10
Dolby Vision
HDR10
Dolby Vision
-
Audio outHDMI
Bluetooth
WiFi (AirPlay 2)
WiFi (Home Theater)
HDMI
Bluetooth
WiFi (AirPlay 2)
WiFi (Home Theater)
HDMI
Bluetooth
WiFi (AirPlay 2)
Audio codecse-AC-3 (DD+)
AC-3 (DD)
FLAC
Apple Lossless
MP3
HE-AAC
AIFF
WAV
e-AC-3 (DD+)
AC-3 (DD)
FLAC
Apple Lossless
MP3
HE-AAC
AIFF
WAV
e-AC-3 (DD+)
AC-3 (DD)
FLAC
Apple Lossless
MP3
HE-AAC
AIFF
WAV
Dolby AtmosDecoding
Output: HDMI (MAT 2.0) or WiFi (to HomePod)
Decoding
Output: HDMI (MAT 2.0) or WiFi (to HomePod)
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 OS & featuresApple TV 4K (2021)Apple TV 4K (2017)Apple TV HD (2015)
OS (at launch)tvOS 14.5tvOS 11tvOS 9
OS (latest supported)tvOS 14.5tvOS 14.5tvOS 14.5
Match frame rate
Match HDR/SDR
Color Balance calibration
AirPlay 2
HomeKit
Siri
ConnectivityApple TV 4K (2021)Apple TV 4K (2017)Apple TV HD (2015)
Remote controlSiri Remote 2021Siri RemoteSiri Remote
TV controlHDMI CEC + infraredHDMI CEC + infraredHDMI CEC + infrared
Ethernet1000 Mb/s1000 Mb/s100 Mb/s
WiFiWiFi 6 (ax)
WiFi Thread
WiFi 5 (ac)WiFi 5 (ac)
Bluetooth5.05.04.0
Controller supportPS5/PS4
Xbox One/Series
MFI
PS5/PS4
Xbox One/Series
MFI
PS5/PS4
Xbox One/Series
MFI
ServicesApple TV 4K (2021)Apple TV 4K (2017)Apple TV HD (2015)
Apple App Store
Apple TV+
Apple Arcade
Apple Music
Apple Fitness+
FlatpanelsHD
Also read: 2019 Shield TV vs. 2015 Shield TV vs. 2017 Shield TV