<Table> Legend <Tr> <Td> Obsolete </Td> <Td> Discontinued </Td> <Td> Current </Td> </Tr> </Table> <Tr> <Td> Obsolete </Td> <Td> Discontinued </Td> <Td> Current </Td> </Tr> <Table> <Tr> <Th> Models </Th> <Th> 1st generation </Th> <Th> 2nd generation </Th> <Th> 3rd generation </Th> <Th> 3rd generation Rev. A </Th> <Th> 4th generation </Th> <Th> 4K (5th generation) </Th> </Tr> <Tr> <Td> Release date (s) </Td> <Td> January 9, 2007 </Td> <Td> September 1, 2010 </Td> <Td> March 7, 2012 </Td> <Td> January 28, 2013 </Td> <Td> October 30, 2015 </Td> <Td> September 22, 2017 </Td> </Tr> <Tr> <Td> Discontinued </Td> <Td> September 1, 2010 </Td> <Td> March 7, 2012 </Td> <Td> March 10, 2013 </Td> <Td> September 8, 2016 </Td> <Td> 64 GB: September 12, 2017 32 GB: In production </Td> <Td> In production </Td> </Tr> <Tr> <Td> Model number - Model ID - Order number </Td> <Td> A1218 - AppleTV1, 1 - MA711LL / A </Td> <Td> A1378 - AppleTV2, 1 - MC572LL / A </Td> <Td> A1427 - AppleTV3, 1 - MD199BZ / A </Td> <Td> A1469 - AppleTV3, 2 - MD199LL / A </Td> <Td> A1625 - AppleTV5, 3 - MGY52LL / A </Td> <Td> A1842 - AppleTV6, 2 - 32 GB: MQD22LL / A 64 GB: MP7P2LL / A </Td> </Tr> <Tr> <Td> Processor </Td> <Td> 1 GHz Intel "Crofton" Pentium M </Td> <Td> Apple A4 (ARM Cortex - A8) </Td> <Td> Apple A5 (single core ARM Cortex - A9, dual core with one core locked) </Td> <Td> Apple A5 (ARM Cortex - A9, single core - redesign from A5 dual core). </Td> <Td> Apple A8 (dual - core) </Td> <Td> Apple A10X Fusion (hexa - core) </Td> </Tr> <Tr> <Td> Graphics </Td> <Td> Nvidia GeForce Go 7300 with 64 MB of VRAM </Td> <Td> Apple A4 (PowerVR SGX535) </Td> <Td_colspan="2"> Apple A5 (PowerVR SGX543MP2) </Td> <Td> Apple A8 (PowerVR Series 6XT GX6450) </Td> <Td> Apple A10X Fusion </Td> </Tr> <Tr> <Td> Memory </Td> <Td> 256 MB of 400 MHz DDR2 SDRAM </Td> <Td> 256 MB LPDDR2 </Td> <Td_colspan="2"> 512 MB LPDDR2 </Td> <Td> 2 GB LPDDR3 </Td> <Td> 3 GB LPDDR4 </Td> </Tr> <Tr> <Td> Storage </Td> <Td> 40 or 160 GB hard disk </Td> <Td_colspan="3"> 8 GB NAND flash for cache </Td> <Td_colspan="2"> 32 or 64 GB NAND flash </Td> </Tr> <Tr> <Td> Connectivity </Td> <Td> USB 2.0 (officially for service use only, though hackers have managed to allow connectivity of hard disks, mice, and keyboards), infrared receiver, HDMI, component video, optical audio </Td> <Td_colspan="3"> Bluetooth, Micro-USB (reserved for service), HDMI, infrared receiver, optical audio </Td> <Td> Bluetooth 4.0, USB - C (for service and developer use), HDMI 1.4, infrared receiver, Lightning (for Siri remote charging only) </Td> <Td> Bluetooth 5.0, HDMI 2.0 a, infrared receiver, Lightning (for Siri remote charging only) </Td> </Tr> <Tr> <Td> Networking </Td> </Tr> <Tr> <Td_colspan="1"> Wi - Fi (802.11 b / g and draft - n) </Td> <Td_colspan="3"> Wi - Fi (802.11 a / b / g / n) </Td> <Td_colspan="3"> Wi - Fi (802.11 a / b / g / n / ac) </Td> </Tr> <Tr> <Td_colspan="5"> 10 / 100 Ethernet </Td> <Td_colspan="1"> Gigabit Ethernet </Td> </Tr> <Tr> <Td> Output </Td> <Td> 1080p (undefined, following the Version 3.0 software update), 720p 60 / 50 Hz (NTSC / PAL), 576p 50 Hz (PAL), 480p 60 Hz (NTSC) over HDMI (HDCP capable) or Component Video (480i 60 Hz is unofficially supported) </Td> <Td> 720p, 576p, 480p over HDMI only (HDCP capable) </Td> <Td_colspan="3"> 1080p, 720p, 576p, 480p over HDMI only (HDCP capable) </Td> <Td> 2160p, 1080p, 720p, 576p, 480p over HDMI only (HDCP capable) with HDR10 and Dolby Vision </Td> </Tr> <Tr> <Td> Audio </Td> </Tr> <Tr> <Td_colspan="1"> Optical audio (48 kHz maximum sample rate), HDMI, RCA analog stereo audio </Td> <Td_colspan="3"> Optical audio (48 kHz fixed sample rate), HDMI </Td> <Td_colspan="2"> HDMI - CEC </Td> </Tr> <Tr> <Td_colspan="4"> Supports output up to 5.1 channels </Td> <Td_colspan="2"> Supports output up to 7.1 channels </Td> </Tr> <Tr> <Td> Power </Td> <Td> Built - in universal 48 W power supply </Td> <Td_colspan="3"> Built - in universal 6 W power supply </Td> <Td> Built - in universal 11 W power supply </Td> <Td> Built - in universal 13 W power supply </Td> </Tr> <Tr> <Td> Dimensions </Td> <Td> 1.1 in (28 mm) (h) 7.7 in (197 mm) (w) 7.7 in (197 mm) (d) </Td> <Td_colspan="3"> 0.9 in (23 mm) (h) 3.9 in (98 mm) (w) 3.9 in (98 mm) (d) </Td> <Td_colspan="2"> 1.4 in (35 mm) (h) 3.9 in (98 mm) (w) 3.9 in (98 mm) (d) </Td> </Tr> <Tr> <Td> Weight </Td> <Td> 2.4 lb (1.09 kg) </Td> <Td_colspan="3"> 0.6 lb (0.27 kg) </Td> <Td_colspan="2"> 15 oz (425 g) </Td> </Tr> <Tr> <Td> Initial operating system </Td> <Td> Apple TV Software 1. 0 (modified build of Mac OS X 10.4 Tiger) </Td> <Td> Apple TV Software 4. 0 (based on iOS 4. 1) </Td> <Td> Apple TV Software 5. 0 (based on iOS 5. 1) </Td> <Td> Apple TV Software 5.2 (based on iOS 6. 1) </Td> <Td> tvOS 9. 0 (based on iOS 9) </Td> <Td> tvOS 11. 0 (based on iOS 11) </Td> </Tr> <Tr> <Td> Current operating system </Td> <Td> Apple TV Software 3. 0.2 (modified build of Mac OS X 10.4 Tiger) </Td> <Td> Apple TV Software 6. 2.1 (based on iOS 7. 1.2) </Td> <Td_colspan="2"> Apple TV Software 7. 2.2 (based on iOS 8. 4.2) </Td> <Td_colspan="2"> tvOS 11.2. 5 (based on iOS 11.2. 5) </Td> </Tr> </Table> <Tr> <Th> Models </Th> <Th> 1st generation </Th> <Th> 2nd generation </Th> <Th> 3rd generation </Th> <Th> 3rd generation Rev. A </Th> <Th> 4th generation </Th> <Th> 4K (5th generation) </Th> </Tr>

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