Roku Ultra (4800) vs Roku XDS (2100)

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Ultra (4800) compared with XDS (2100)

	RokuUltra (4800)	RokuXDS (2100)
Overview
Released
Released	October 2020	September 2010
Video and audio
Resolution
Resolution	4K (better)	1080p
HDR
HDR	HDR10, Dolby Vision and HLG (better)	None
Dolby Atmos
Dolby Atmos	Yes	–
Video
Video	Up to 4K at 60 fps; Roku's model-4800 guide specifies an HDCP 2.2 HDMI connection for 4K	Up to 1080p through HDMI; component supports 720p/480p and needs Roku's separately sold cable, while composite carries 480i (Missing Remote)
HDR
HDR	Roku's current Benjamin/4800X developer row lists HDR10, Dolby Vision and HLG. An older model-4800 support document also claims HDR10+, which the developer row omits; HDR10+ is left out of the main field pending reconciliation	–
Audio
Audio	Dolby Atmos with compatible content and sound system; TechRadar lists AAC, MP3, WMA, FLAC, PCM, AC3/EAC3, DTS and ALAC support	Stereo analogue audio; digital stereo or 5.1 passthrough through HDMI and optical, dependent on media and service (Missing Remote)
Performance
Software
Software	Roku OS	Roku OS
Chip details
Chip details	Quad-core processor (Roku launch announcement); Roku's Benjamin/4800X developer row identifies Arm Cortex-A55	MIPS at 400 MHz in Roku's exact Pico/2100X developer row; Nexperia PNX8935E1 identified by SmallNetBuilder's teardown
Memory
Memory	2 GB (Roku's Benjamin/4800X developer row)	256 MB in Roku's exact Pico/2100X developer row
Storage
Storage	–	SmallNetBuilder identifies 256 MB physical flash, used for system software rather than published user storage. USB playback was unfinished at launch; official availability was postponed from November to January 2011 in Missing Remote's December test
Software and services
Software and services	Roku OS; OS 9.4 was announced alongside the player. AirPlay 2 and HomeKit were added after launch, as confirmed in Tom's Guide's review; apps and features vary by country and software version	Roku lists OS 3.1 as the last compatible version for 2100X. Its current developer table labels this row XD, while the exact-model contemporary reviews identify 2100X as XDS. Channels and service support vary with region and software
Connections
Wi-Fi
Wi-Fi	Wi-Fi 5	Wi-Fi 4
Ethernet
Ethernet	Yes	Yes
Voice remote
Voice remote	Yes	No
Ports
Ports	HDMI, USB, Ethernet and power input (model-4800 Quick Start Guide); no microSD slot (both reviews)	HDMI, component video connector, composite video and stereo RCA audio, optical digital audio, 10/100 Ethernet, USB 2.0 media port and power (Missing Remote)
Wi-Fi and Bluetooth
Wi-Fi and Bluetooth	Dual-band 802.11ac (TechRadar); Bluetooth support and up to 50% greater wireless range than the prior model (Roku's launch claim)	Dual-band 802.11n, compatible with b/g; 2.4 and 5 GHz networks independently verified by SmallNetBuilder
Smart home
Smart home	Controllable through compatible Amazon Alexa and Google Assistant devices; AirPlay 2 and HomeKit support with updated software	–
Remote
Remote	Original voice remote has TV power, volume and mute, headphone jack, two personal shortcuts and lost-remote finder; two AA batteries. Later rechargeable-remote bundles are not separate player hardware here	Original infrared Enhanced remote with Back, Options and Instant Replay; no microphone, headphone socket or television controls
Design
Type
Type	Box	Box
Power
Power	Supplied mains power adaptor	–
Size
Size	4.9 × 4.9 × 0.9 in (Tom's Guide)	4.9 × 4.9 × 1.2 inches, width × depth × height (Missing Remote)
In the box
In the box	Ultra player, voice remote, headphones, two AA batteries, Premium High Speed HDMI cable and power adaptor	Player, infrared remote, two AAA batteries, composite/stereo cable and mains power adaptor. HDMI and component cables sold separately (Missing Remote and SmallNetBuilder)