Amazon Fire TV (2nd Gen) vs Roku Ultra (4640)

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Fire TV (2nd Gen) compared with Ultra (4640)

	AmazonFire TV (2nd Gen)	RokuUltra (4640)
Overview
Released
Released	October 2015	October 2016
Video and audio
Resolution
Resolution	4K	4K
HDR
HDR	None	HDR10 (better)
Video
Video	HEVC and H.264 decoding up to 3840 × 2160 at 30 fps; HEVC Main 10 input but 8-bit output; VP9 up to YouTube 4K; HDCP 2.2	Up to 4K at 60 fps; HDCP 2.2; upscales 720p and 1080p sources to 4K (Roku launch release reproduced by Display Daily)
HDR
HDR	HDR output is not supported, according to Amazon’s developer specifications	HDR10 (Roku's exact Cooper/4640X developer row); Dolby Vision is not supported
Audio
Audio	Dolby Digital and Dolby Digital Plus input formats; surround audio via HDMI	Dolby Digital and Dolby Digital Plus decoding; optical digital audio output for compatible receivers and soundbars (Roku launch release)
Performance
Software
Software	Fire OS	Roku OS
Storage
Storage	8 GB	–
Chip details
Chip details	MediaTek 8173C; two Cortex-A72 cores up to 2 GHz and two Cortex-A53 cores up to 1.573 GHz; PowerVR Rogue GX6250 GPU; 32-bit applications	Arm Cortex-A53 quad-core 1.2 GHz; OpenGL ES 2.0 (Roku's Cooper/4640X developer row)
Memory
Memory	2 GB RAM	1 GB (Roku's exact Cooper/4640X developer row)
Storage
Storage	Internal storage includes operating software; microSD expansion supports up to 128 GB for downloaded apps and games	MicroSD slot provides additional channel storage; USB is for local media playback (Roku launch release). No verified built-in user storage capacity
Software and services
Software and services	Fire OS 5 based on Android 5.1 (API level 22); build model AFTS. Amazon’s launch release confirms US shipping from 5 October 2015.	Roku OS; apps and features vary by region and software version
Connections
Wi-Fi
Wi-Fi	Wi-Fi 5	Wi-Fi 5
Ethernet
Ethernet	Yes	Yes
Voice remote
Voice remote	Yes	Yes
Ports
Ports	HDMI, Ethernet, USB 2.0, microSD and power; no optical audio output. USB version and port list confirmed by AVForums’ exact-model inspection.	HDMI, Ethernet, optical digital audio output, USB media playback port, microSD slot and power input
Wi-Fi and Bluetooth
Wi-Fi and Bluetooth	Dual-band 802.11a/b/g/n/ac with 2 × 2 MIMO; Bluetooth 4.1 with BLE; Miracast supported	Dual-band 802.11ac MIMO (Roku launch release)
Remote
Remote	Included microphone-equipped voice remote; Alexa functions varied by region, with AVForums reporting no Alexa assistant in the UK at its 2015 review	Original point-anywhere remote has voice search, headphone jack, headphone volume, gaming buttons and lost-remote finder; no TV volume or power control (The Next Web)
Design
Type
Type	Box	Box
Size
Size	–	4.9 × 4.9 × 0.9 in; fanless design (Tom's Guide)
Power
Power	External power supply	–