Roku 2 XS (3100) vs Roku Ultra (4800)

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

2 XS (3100) compared with Ultra (4800)
Roku2 XS (3100)RokuUltra (4800)
Overview
ReleasedJuly 2011October 2020
Video and audio
Resolution1080p4K (better)
HDRNoneHDR10, Dolby Vision and HLG (better)
Dolby Atmos–Yes
VideoUp to 1080p over HDMI; supplied 3.5 mm-to-RCA cable carries standard-definition composite video and analogue stereoUp to 4K at 60 fps; Roku's model-4800 guide specifies an HDCP 2.2 HDMI connection for 4K
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
AudioDolby Digital Plus 5.1 passthrough supported by the launch Netflix implementation; surround availability depends on the service and receiverDolby Atmos with compatible content and sound system; TechRadar lists AAC, MP3, WMA, FLAC, PCM, AC3/EAC3, DTS and ALAC support
Performance
SoftwareRoku OSRoku OS
Chip detailsARM11 at 600 MHz (Roku's exact Giga/3100X developer row)Quad-core processor (Roku launch announcement); Roku's Benjamin/4800X developer row identifies Arm Cortex-A55
Memory256 MB (Roku's exact Giga/3100X developer row)2 GB (Roku's Benjamin/4800X developer row)
StoragemicroSD expands app/game storage, not removable-media playback; supported local files play through USB–
Software and servicesRoku OS; exact 3100X maker row lists this legacy device's last compatible version as 9.1. Apps and services vary by region and software versionRoku 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
Connections
Wi-FiWi-Fi 4Wi-Fi 5
EthernetYesYes
Voice remoteNoYes
PortsHDMI, Ethernet, USB media, microSD channel-storage slot, 3.5 mm composite/stereo A/V, power and resetHDMI, USB, Ethernet and power input (model-4800 Quick Start Guide); no microSD slot (both reviews)
Wi-Fi and Bluetooth802.11n Wi-Fi and 100 Mbit Ethernet (Expert Reviews); Bluetooth for the gaming remote (Roku launch release)Dual-band 802.11ac (TechRadar); Bluetooth support and up to 50% greater wireless range than the prior model (Roku's launch claim)
Smart home–Controllable through compatible Amazon Alexa and Google Assistant devices; AirPlay 2 and HomeKit support with updated software
RemoteOriginal Bluetooth enhanced remote with A/B game buttons, motion sensing and adjustable wrist strap; no microphone, headphone socket or television power controlsOriginal 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
Design
TypeBoxBox
PowerLess than 2 W stated in the original Roku 2 family announcement; mains power adapter includedSupplied mains power adaptor
Size–4.9 × 4.9 × 0.9 in (Tom's Guide)
In the boxPlayer, enhanced remote, two AA batteries, custom composite/stereo A/V cable and power adapter; HDMI and Ethernet cables not includedUltra player, voice remote, headphones, two AA batteries, Premium High Speed HDMI cable and power adaptor

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