Streaming devices / Compare

Amazon Fire TV Cube (3rd Gen, 2022) vs Roku Ultra (2024)

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Product A: Amazon

Fire TV Cube (3rd Gen, 2022)

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B

Product B: Roku

Ultra (2024)

62 of 97 known

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Only differences

AAmazon Fire TV Cube (3rd Gen, 2022)

BRoku Ultra (2024)

General

5 of 8 differ

Series

Fire TV Cube2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Technical details heading identifies the third-generation Fire TV Cube.

Ultra2Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Exact 2024 Roku Ultra launch, describing successive Ultra devices.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

GA5Z9L4Owner's manualdigprjsurvey.amazon.com/csad/help/node/GFAYGLRY3SG69MYNRead 8 October 2026Product Specifications explicitly pairs Fire TV Cube (3rd Gen) with GA5Z9L. AFTGAZL is the developer Build model software identifier and is stored as an alias only. YKF470 and K7Q3MT are remote models and excluded from device model numbers.

4850R, 4850X1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Exact retail product details list Model 4850R. Developer model identifier 4850X is separately sourced. Not older 4800/4802 or Walmart LT.3Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 7 October 2026Current hardware table names Ultra Brewster 4850X, 2024. Software hardware identifier alongside retail SKU 4850R.

GTIN / EAN

Not available

8296100068889Retailer pageabt.com/Roku-Ultra-4K-Streaming-Device-2024-4850R/p/213248.htmlRead 7 October 2026Exact 4850R product header UPC 829610006888.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

28 September 20225Press releaseaboutamazon.com/news/devices/devices-and-services-news-2022Read 8 October 2026September 28, 2022 event entries at 9:51 AM announce the next-generation Cube. 9:53 AM entry states shipping October 25. US launch month 2022-10, corroborated by original reviews published October 25.

24 September 20242Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Dated September 24, 2024.

Status

Available2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Exact maker US page continues to offer this third-generation model for purchase. Current availability checked October 8, 2026.

Available3Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 7 October 2026Current models table explicitly manufactured and supported. Current product is for sale, so available.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$139.995Press releaseaboutamazon.com/news/devices/devices-and-services-news-2022Read 8 October 2026September 28 event 9:53 AM Shipping soon entry states 139.99 USD, US launch price for standard bundle. Later price increases and discounts excluded.

$99.992Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Availability explicitly $99.99 in US. US pre-tax MSRP, separate from Canadian price or later sales.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

US2Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Launch US availability and current US 4850R reference. Canadian retail identifier not proved, so no CA variant inherited.

ColoursiThe maker's own colour names

Not available

Black9Retailer pageabt.com/Roku-Ultra-4K-Streaming-Device-2024-4850R/p/213248.htmlRead 7 October 2026Exact 4850R listing names Black Finish. No arbitrary finish variants added.

Form factoriA stick plugs straight into the HDMI port. A dongle hangs from its own short fixed HDMI lead. A box stands on its own and connects by a separate cable.

Box1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact table says Cube. Stored as box under the existing schema.

Box8Reviewtomsguide.com/tvs/roku-ultra-2024-reviewRead 7 October 2026Exact 2024 review repeatedly identifies small box, separate from sticks.

Video output

7 of 11 differ

Max output resolutioniHighest published video output resolution. Decoder capability and app streaming quality do not establish the output resolution.

3840 × 2160px2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Output/Input resolution supported row lists 2160p, 1080p and 720p up to 60 fps. 4K Ultra HD output establishes the standard 3840 x 2160 raster. Not a decoder-only value.

3840 × 2160px1Maker product pageroku.com/products/roku-ultraRead 7 October 2026TV compatibility: up to 2160p at 60 fps (3840 x 2160). This is HDMI output, not UI rendering resolution.

Max output refresh rateiHighest published output refresh rate. Resolution, HDR and connection conditions belong in the source note. This is not a television panel refresh rate.

60Hz2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Output/Input resolution supported row says up to 60 fps at 2160p, 1080p and 720p. No 120 Hz feature inferred from HDMI 2.1.

60Hz1Maker product pageroku.com/products/roku-ultraRead 7 October 2026TV compatibility explicitly up to 2160p at 60 fps and Dolby Vision at 60 fps. Requires compatible HDMI/HDCP chain. No higher UI/TV rate imported.

Video output modesiPublished video output combinations. A row records support, not a proved maximum at every lower resolution. Keep HDR, chroma and bit depth conditions in source notes.

AAmazon Fire TV Cube (3rd Gen, 2022)

Height (px)	Refresh rate (Hz)
2160	60
1080	60
720	60

Source2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Published Output/Input resolution supported row records each vertical resolution up to 60 fps. HDR, bit depth and chroma combinations are not separately stated, so those cells are omitted.

BRoku Ultra (2024)

Width (px)	Height (px)	Refresh rate (Hz)	HDR format
3840	2160	60	Dolby Vision

Source1Maker product pageroku.com/products/roku-ultraRead 7 October 2026TV compatibility explicitly supports Dolby Vision at 60 fps on 4K HDR TVs. Native 3840 x 2160 output. Bit depth/chroma unproved.

HDR formats

HDR10, HDR10+, HLG, Dolby Vision1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact HDR row lists HDR10, HDR10+, HLG and Dolby Vision. App, content and TV support are required.

HDR10, HDR10+, Dolby Vision, HLG1Maker product pageroku.com/products/roku-ultraRead 7 October 2026TV compatibility explicitly lists Dolby Vision, HDR10/10+ and HLG. Compatible content, TV and HDMI chain required.

Dolby Vision profilesiPublished supported Dolby Vision profiles and levels. Streaming support does not prove local-file support.

4-MEL, 5 (up to Level 9), 8 (up to Level 9), 9 (up to Level 5), 101Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Video codecs Dolby Vision row: 4-MEL, 5, 8, 9 and 10. Levels specified only for profiles 5 and 8 (up to 9), and 9 (up to 5). No level borrowed from a Fire TV Stick table. Local-file support depends on the player.

Not available

HDMI versioniPublished HDMI output revision. A revision does not establish every optional HDMI feature.

2.11Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Connectors / Ports explicitly separates one HDMI 2.1 input and one HDMI 2.1 output with ARC. This field is the output revision. Optional HDMI features are not inferred.

2.1b1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Ports table explicitly HDMI 2.1b. Optional features are not inferred from revision.

HDCP version

2.31Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Connectors / Ports row states HDCP 2.3. Retail page separately requires HDCP 2.2 on the connected 4K TV, which is a compatibility minimum.

2.21Maker product pageroku.com/products/roku-ultraRead 7 October 20264K compatibility requires an HDMI input supporting HDCP 2.2. Stored supported 4K-chain version, not a claim of a newer maximum.

HDMI-CEC

Yes8Reviewandroidauthority.com/amazon-fire-tv-cube-3rd-gen-review-3243902Read 8 October 2026December 10, 2022 exact third-gen review explicitly states included remote supports HDMI-CEC for power and volume. Test ran Fire OS 7.6.1.3. Compatible equipment required.

Yes7Owner's manualsupport.roku.com/en-us/article/360057488733Read 7 October 2026Exact 4850 compatibility with HomeKit. Player power control requires TV HDMI-CEC and Roku 1-touch-play. Published CEC function, not every CEC optional feature.

Automatic frame rate matchingiCan switch the video output rate to match content. App, operating system and playback restrictions belong in the source note.

Not available

Yes2Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Exact 2024 launch explicitly HDMI 2.1 Quick Media Switching between refresh rates/content sources. Official auto-adjust article supplies native-content matching settings and app restrictions.12Owner's manualsupport.roku.com/article/change-the-refresh-rateRead 7 October 2026Roku auto-adjust display refresh switches to source native rate on compatible players. Exact 2024 launch additionally establishes QMS switching. Some apps including Netflix/Hulu exclude auto-adjust. Enable in Advanced display settings. QMS requires compatible TV, no implied universal app support.

Dynamic range matchingiCan switch the output dynamic range to match SDR or HDR content. App and firmware restrictions belong in the source note.

Not available

Not available

UpscalingiNamed video upscaling modes. Record source resolution and output restrictions in source notes.

Super Resolution Upscaling2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Product description names Super Resolution Upscaling for converting HD content to 4K. No claim that all content or apps improve. HD source and 4K output required for this stated function.

720p to 1080p, 720p to 2160p, 1080p to 2160p1Maker product pageroku.com/products/roku-ultraRead 7 October 2026TV compatibility separately names upscaling 720p to 1080p and 720p/1080p to 2160p. No named AI processing invented.

Video decoding

4 of 4 differ

Video codecsiExplicitly supported video decoding formats. Use names such as H.264, HEVC, AV1 and VP9. Chip capabilities alone do not prove device playback support.

H.265 / HEVC, H.264 / AVC, AV1, VP9, MPEG-2, MPEG-41Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact third-generation decoder table. Does not inherit H.263 or VP8 from older Cubes or Sticks.

H.264, HEVC, VP9.2, AV11Maker product pageroku.com/products/roku-ultraRead 7 October 2026USB media formats explicitly H.264/AVC, H.265/HEVC, VP9.2 and AV1. Local USB route and listed container restrictions, no generic chip capability inherited.

Video decode limitsiPublished supported decoding limits. Profiles, levels and playback route matter. Output resolution and service support are separate.

AAmazon Fire TV Cube (3rd Gen, 2022)

Codec	Profile	Level	Height (px)	Max frame rate (fps)	Bit depth (bits)
H.265 / HEVC	Main 10	5.1	2160	60	Not available
H.264 / AVC	High	5.1	2160	30	8
H.264 / AVC	High	5.1	1080	60	8
AV1	Main	5.1	2160	60	10
VP9	2	Not available	2160	60	Not available
MPEG-2	Not available	Not available	1080	60	Not available
MPEG-4	Not available	Not available	1080	60	Not available

Source1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Video codecs rows are decoder limits, distinct from HDMI output/input modes. H.264 explicitly has 2160p at 30 fps or 1080p at 60 fps, High L5.1 and 8-bit. AV1 Main L5.1 10-bit. VP9 Profile 2 at up to 30 Mbps with unspecified limitations. Horizontal pixel counts are omitted where only vertical resolution is published.

BRoku Ultra (2024)

Not available

Video containersiExplicitly supported local playback containers. App requirements belong in the source note.

MP46Reviewcomputerbase.de/artikel/audio-video-foto/amazon-fire-tv-cube-3-gen-test.82507Read 8 October 2026Supported codecs section explicitly reports AV1 videos in MP4 on an NTFS USB drive playing successfully in the integrated media player. Codec, storage route and container combination only. Not a claim for every MP4 codec. Player and firmware versions unstated.

MKV, MP4, MOV1Maker product pageroku.com/products/roku-ultraRead 7 October 2026USB video playback table lists MKV, MP4 and MOV. VP9.2 only MKV, AV1 MP4/MKV, AVC and HEVC all three. This is local playback, not every streaming protocol.

DRM systemsiNamed supported DRM systems and security levels. DRM certification does not prove a particular service streams at 4K.

Widevine L1 v11, PlayReady 3.31Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact DRM row lists Widevine L1 v11 and PlayReady 3.3. Secure Media Path note applies to video media only. Does not guarantee service 4K availability.

Not available

Audio

3 of 8 differ

Audio formatsiPublished supported audio formats. Decoder, output and passthrough roles are qualified in source notes.

Dolby MAT, Dolby Digital / AC3, Dolby Digital Plus / EAC3, Dolby Atmos (DDP+JOC and AC4), Dolby TrueHD, DTS, DTS-HD (basic profile), MPEG-H, AAC-LC, HE-AAC, HE-AACv2, AAC-ELD, xHE-AAC, FLAC, MIDI, MP3, Vorbis, PCM / WAV, AMR-NB, Opus1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Audio codecs are input formats and qualified routes. Dolby MAT transcoding applies to streaming apps and HDMI input. MAT input to MAT output is specified for HDMI input. TrueHD, DTS, basic-profile DTS-HD and MPEG-H are passthrough. Other named audio formats are decoder capabilities. PCM/Wave up to 96 kHz, six channels, 16/24-bit is a decoder limit, so output maximum fields remain empty.

AAC, MP3, WMA, FLAC, PCM, AC3, EAC3, DTS Digital Surround, ALAC, HE-AAC, AC-4 with Atmos, EAC3 with Atmos1Maker product pageroku.com/products/roku-ultraRead 7 October 2026USB audio format table lists each stored format. DTS is passthrough, Atmos is via AC-4/EAC3 in listed local containers and HDMI with compatible sound equipment. Decode versus passthrough qualified separately.

Audio passthrough formatsiCompressed formats explicitly passed to external audio equipment without decoding. Dolby Atmos support alone does not establish TrueHD passthrough.

Dolby TrueHD (Atmos), DTS, DTS-HD (basic profile), MPEG-H1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact table explicitly names Dolby TrueHD, DTS, DTS-HD basic profile and MPEG-H passthrough. TrueHD Atmos is named in the Dolby row. Compatible player, content and HDMI audio equipment are required. These are current support statements, not guaranteed launch behavior. Full DTS-HD Master Audio support is not claimed.

DTS Digital Surround, AC3, EAC31Maker product pageroku.com/products/roku-ultraRead 7 October 2026Audio features explicitly DTS Digital Surround pass through over HDMI. AC3/EAC3 passthrough separately sourced from official streaming specification. No TrueHD/DTS-HD inference.4Maker product pagedeveloper.roku.com/dev/docs/mediaRead 7 October 2026Supported audio notes explicitly AC3/EAC3 passthrough to receiving device, separately names Brewster 4850X Dolby support. DTS passthrough also explicit. No lossless-format support inferred.

Dolby AtmosiExplicit device support for Dolby Atmos. Codec, service, app and output requirements belong in the source note.

Yes1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact table names DDP+JOC, AC4 Atmos and TrueHD Atmos. Matching content, app and output equipment required.

Yes1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Audio features explicitly Dolby Atmos decode via HDMI, with compatible speakers. USB audio table names AC-4 and EAC3 Atmos, not TrueHD passthrough.

Audio channel configurationsiPublished output configurations, such as 2.0, 5.1 or 7.1. Keep PCM and compressed audio routes separate in source notes. Dolby Atmos support alone does not establish a channel configuration.

7.1 surround sound, 2-channel stereo, HDMI audio passthrough up to 5.12Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Audio support row names 7.1 surround, stereo and HDMI audio passthrough up to 5.1. It does not identify 7.1 as PCM. Separate current developer passthrough format support is retained without extending this general channel claim.

2.01Maker product pageroku.com/products/roku-ultraRead 7 October 2026Audio features explicitly list Digital stereo over HDMI, stored as 2.0. No inferred PCM multichannel output.

Max audio sample rateiHighest published audio output sample rate. Keep playback route and format in source notes.

Not available

Not available

Max audio bit depthiHighest published audio output bit depth. Keep playback route and format in source notes.

Not available

Not available

Bluetooth audio output

Yes2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Bluetooth technical row explicitly permits compatible speakers and headphones. Accessibility row corroborates headphone and compatible hearing-device output. Codec support is not inferred.

Yes1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Bluetooth Headphone Mode explicitly pairs headphones directly to Ultra. Bluetooth input streaming is separate and not used as output proof.

Bluetooth audio codecsiExplicitly supported codecs for audio sent to Bluetooth headphones or speakers. Bluetooth version alone is not proof.

Not available

Not available

Processor and memory

8 of 11 differ

System on chip

Amlogic POP1-G1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Processor (SoC) row: Amlogic POP1-G, also named Amlogic AML Popcorn. No generic A311D2 chipset substitution.

Not available

CPU

4x ARM Cortex-A73 at 2.2 GHz and 4x ARM Cortex-A53 at 2.0 GHz1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026CPU row: ARM 4xCA73 at 2.2 GHz and ARM 4xCA53 at 2.0 GHz.

ARM Cortex-A553Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 7 October 2026Exact Brewster/4850X table: ARM Cortex A55. No SoC/GPU or clock inferred from accelerated graphics API.

CPU cores

81Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Four CA73 plus four CA53 cores. Exact US product page separately calls it octa-core.

42Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Launch explicitly all-new quad core processor. No CPU clock or SoC name stated.

Max CPU clockiHighest explicitly published processor clock for this device. Generic chipset limits are not device evidence.

2.2GHz1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact CPU row gives 2.2 GHz for the four CA73 cores. CA53 cluster runs at 2.0 GHz.

Not available

GPU

ARM Mali-G52 MP81Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026GPU row names ARM G52 MP8 at 800 MHz. Clock retained in this note because no separate GPU clock field exists.

Not available

RAMiKeep published GB values as stated. Convert a source explicitly labelled MB using 1000 MB per GB and preserve its original figure and unit in the note. Do not assume MB means MiB. Convert explicit MiB or GiB to decimal GB through their byte definitions, recording the conversion in the note. This normalization does not establish an exact physical byte count.

2GB1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Memory row: 2GB, LPDDR4/x at 4224 MT/s.

2GB3Maker product pagedeveloper.roku.com/dev/docs/hardwareRead 7 October 2026Exact Brewster/4850X row explicitly 2 GB. Direct HTTP fetch returns 403. Readable official web-tool cached page independently opened. Access limit recorded.

RAM type

LPDDR4/x1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact maker notation LPDDR4/x. Does not identify LPDDR4 versus LPDDR4X more precisely.

Not available

StorageiMarketed built-in storage capacity in decimal GB. Free space after the operating system is separate.

16GB1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Storage row: 16 GB internal marketed capacity. Free space is separate.

4GB8Reviewtomsguide.com/tvs/roku-ultra-2024-reviewRead 7 October 2026Design explicitly only 4 GB internal storage. Maker is silent. No storage technology or external app-install ability inferred.

Storage type

Not available

Not available

Expandable storageiCan use added removable or external storage to store installed apps or play media directly. Copying files through a USB data connection alone does not qualify. The source note states whether apps, media or both are supported and names the connection and limitations. Storage must be attached to the streaming device. Cloud and network streaming do not qualify.

Yes6Reviewcomputerbase.de/artikel/audio-video-foto/amazon-fire-tv-cube-3-gen-test.82507Read 8 October 2026Exact 2022 third-generation review NTFS-USB-Sticks section: NTFS or FAT32 files accessible through apps supporting external media. Apps can be moved after formatting storage on the Cube. NTFS media drive cannot also serve as the device-formatted app drive. Firmware version unstated.

Yes1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Local playback via USB port. True covers additional local media storage only, not adding internal capacity or installing apps on USB.

Storage expansion methodsiPublished methods for adding app or media storage. USB support alone does not prove app installation on external storage.

USB external storage6Reviewcomputerbase.de/artikel/audio-video-foto/amazon-fire-tv-cube-3-gen-test.82507Read 8 October 2026Exact review describes USB-A drives for direct media playback and device-formatted app storage. No microSD slot. Capacity and exFAT support not inferred.

USB mass storage for local media playback1Maker product pageroku.com/products/roku-ultraRead 7 October 2026USB local playback only. App installation on external media unproved.

Connectivity

5 of 7 differ

Wi-Fi

Wi-Fi 6E2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Technical details Wi-Fi row names Wi-Fi 6E tri-band. 6 GHz operation requires a Wi-Fi 6E network using WPA3. Regional radio availability may differ, this is the US reference.

Wi-Fi 61Maker product pageroku.com/products/roku-ultraRead 7 October 2026Networking explicitly 802.11 ax Wi-Fi 6.

Wi-Fi bands

2.4 GHz, 5 GHz, 6 GHz1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Wi-Fi row explicitly lists 2.4 GHz, 5.0 GHz and 6 GHz tri-band.

2.4 GHz, 5 GHz1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Networking explicitly 2.4 GHz / 5 GHz. No 6 GHz inferred.

Wi-Fi MIMOiWritten as 2x2 MIMO when the maker gives the stream count, or MIMO when it does not. 2T2R counts as 2x2. MU-MIMO support alone does not show more than one stream, so it is not stored. Band wording goes in the source note.

2x2 MIMO1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Wi-Fi row explicitly lists 2x2 MIMO.

MIMO1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Networking explicitly dual-band MIMO. Stream/antenna count not published.

Built-in Ethernet speediRated speed of a built-in Ethernet port. An optional USB Ethernet adapter does not count.

100Mbps1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Ethernet row: 10/100 Mbps built-in Ethernet. Not gigabit and not an optional dongle.

100Mbps1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Networking and ports explicitly 10/100 Base-T. Maximum rated built-in link 100 Mbps, not review throughput.

Optional Ethernet adapter supportiExplicit support for an external Ethernet adapter. Required adapter and connection belong in the source note.

Not available

Not available

Bluetooth versioniPublished device Bluetooth version. The remote can use a different Bluetooth version.

5.01Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Bluetooth row specifies 5.0 with BLE for the device, separate from the remote.

Not available

PortsiPhysical device connectors, including a fixed HDMI plug and power-only USB. Excludes connectors on the remote and optional adapters. Count identical connectors in each row.

AAmazon Fire TV Cube (3rd Gen, 2022)

Connector	Count	Version	Role
HDMI	1	2.1	Video input
HDMI	1	2.1	Video output, ARC input support
USB-A	1	2.0	External storage, webcam or compatible controller
Ethernet	1	Not available	10/100 Mbps network
DC power	1	Not available	Power input
Other	1	Not available	IR extender output

Source3Owner's manuald1ergij2b6wmg5.cloudfront.net/Amazon+Fire+TV+User+Guides/Fire+TV+Cube+Documentation/FireTVCube_Gen3_Online_QSG_US.pdfRead 8 October 2026Page 1 rear diagram labels exactly six physical connectors: HDMI input, HDMI output, USB-A, network, power and IR extender. Revisions and Ethernet rate from exact developer and retail technical tables. QSG page 2 names external webcam. External storage scope from ComputerBase exact review. Compatible USB controller use from PCWorld exact review. IR connector is stored as other because it is an IR control port, not an audio output.

BRoku Ultra (2024)

Connector	Count	Version	Role	Data speed (Gbps)
USB-A	1	USB 3.0	Local media playback and remote charging	Not available
HDMI	1	2.1b	Video and audio output	Not available
Ethernet	1	Not available	10/100 Base-T networking	0.1
DC power	1	Not available	Power input	Not available

Source1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Ports inventory USB 3.0, HDMI 2.1b, Ethernet 10/100 and Power. Maker back-view photo confirms one of each. TechRadar independently identifies single HDMI, USB-A and Ethernet. Remote USB-C excluded.

Smart home

2 of 3 differ

Thread border router

Not available

Not available

Matter controlleriCan commission and control Matter accessories. Acting as a Matter accessory alone does not qualify.

Not available

No8Reviewtomsguide.com/tvs/roku-ultra-2024-reviewRead 7 October 2026Smart-home section explicitly does not adopt any Matter connectivity. Review 2024 hardware, current maker still lists proprietary integrations only. Not inferred from absence in product table.

Smart home platforms

Alexa3Owner's manuald1ergij2b6wmg5.cloudfront.net/Amazon+Fire+TV+User+Guides/Fire+TV+Cube+Documentation/FireTVCube_Gen3_Online_QSG_US.pdfRead 8 October 2026Page 2 Do even more with Alexa explains voice control of compatible smart-home devices. No Matter controller or Thread border-router capability inferred.

Roku Smart Home, Apple HomeKit, Google Home, Amazon Alexa1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Compatibility lists Roku Smart Home, Apple HomeKit, Google Home and Alexa. HomeKit is accessory integration, not Matter-controller proof.

Remote control

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Remote model

Alexa Voice Remote Enhanced2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Included in the box explicitly names Alexa Voice Remote Enhanced. Original supplied remote, excluding Pro bundles and later replacements.

Roku Voice Remote Pro (2nd edition)1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Remote control and box table explicitly Roku Voice Remote Pro (2nd edition). Original supplied remote, not a later generic replacement.

Remote connectioniEvery wireless link the included remote uses, to the device or to other equipment. An infrared transmitter that controls the TV counts as infrared.

Bluetooth2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Alexa Voice Remote Enhanced technical details Technology row specifies Bluetooth 5.0. No infrared radio is inferred for the remote from the Cube IR blaster.

Not available

Remote microphone

Yes3Owner's manuald1ergij2b6wmg5.cloudfront.net/Amazon+Fire+TV+User+Guides/Fire+TV+Cube+Documentation/FireTVCube_Gen3_Online_QSG_US.pdfRead 8 October 2026Page 2 remote diagram labels Microphone and Alexa voice button.

Yes5Owner's manualsupport.roku.com/en-us/article/learn-about-voice-remote-proRead 7 October 2026Hands-free and push-to-talk control explicitly described for Voice Remote Pro second edition. Slider green enables voice microphone. No capsule count claimed.

Remote voice assistantsiVoice assistants usable from the supplied remote. Region, language, app and firmware restrictions belong in the source note.

Alexa2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Original remote voice button supports Alexa. Alexa+ is a later device software feature, qualified separately.

Roku Voice2Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Supplied second-edition remote supports hands-free Hey Roku voice commands and shortcuts. Other assistant integrations require external devices.

Remote TV controliSupported TV controls, such as power, volume and input. Infrared and HDMI-CEC routes are qualified in source notes.

Power, Volume, Mute, Channel up/down2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Product page Enhanced remote paragraph and QSG page 2 label power, volume, mute and channel buttons. Compatible television, audio equipment or cable-box setup required.

Power, Volume, Mute5Owner's manualsupport.roku.com/en-us/article/learn-about-voice-remote-proRead 7 October 2026Second-edition description confirms TV power and volume controls. Its exact diagram includes mute among the shared core buttons. TV compatibility and remote setup affect operation. No input switching implied.

Remote finder

No7Reviewpcworld.com/article/1360317/amazon-fire-tv-cube-3rd-gen-review.htmlRead 8 October 2026October 25, 2022 review An upgraded remote section explicitly says standard Cube remote lacks remote finder. Pro is separate.

Yes1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Product explicitly lost remote finder. Launch describes box-button and hands-free trigger.

Remote backlight

No7Reviewpcworld.com/article/1360317/amazon-fire-tv-cube-3rd-gen-review.htmlRead 8 October 2026Same section explicitly says standard Cube remote lacks backlighting. Pro is separate.

Yes1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Product explicitly backlit buttons on supplied Voice Remote Pro.

Remote poweriPublished batteries or rechargeable battery arrangement for the supplied remote.

2 AAA batteries2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Enhanced remote technical details: two included AAA batteries. No rechargeable internal battery or charging port inferred.

Built-in rechargeable lithium-ion battery5Owner's manualsupport.roku.com/en-us/article/learn-about-voice-remote-proRead 7 October 2026Charging section explicitly rechargeable lithium-ion battery. Second-edition full charge 5.5 h and typical 3 months remain in source context, not unsupported schema fields.

Remote charging port

Not available

USB-C1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Box includes USB-C cable for remote, and launch explicitly USB-C charging for second edition.2Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Second-edition remote explicitly convenient USB-C charging.

Software

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Operating systemiPlatform name. The launch version is stored separately from later firmware support.

Fire OS1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact OS version row says Fire OS 7.

Roku OS6Owner's manualsupport.roku.com/en-us/article/learn-about-ultraRead 7 October 2026Exact 4850 guide Learn about Roku features identifies Roku OS. Launch OS revision unproved.

Operating system at launch

Fire OS 7 (Android 9)1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 20262022 identity table states Fire OS 7 and Android Level 28 (Android 9). Android Authority original review ran Fire OS 7.6.1.3. No Fire OS 8 inheritance from 2023 Sticks.

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App store

Amazon Appstore9Maker product pageaboutamazon.com/news/devices/xbox-gaming-on-amazon-fire-tvRead 8 October 2026How to get started explicitly names Fire TV Cube (3rd Gen) and installing Xbox app via Amazon Appstore.

Roku Streaming Store6Owner's manualsupport.roku.com/en-us/article/learn-about-ultraRead 7 October 2026Exact-model guide includes Roku Streaming Store link in footer and add-app guidance. Current platform store name.

Casting protocolsiPublished casting or screen mirroring protocols. AirPlay and Google Cast are distinct. App-only playback support does not prove system-wide mirroring.

Miracast1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Miracast display mirroring with Fire tablet row says Supported. No native AirPlay or Google Cast claim.

Apple AirPlay 27Owner's manualsupport.roku.com/en-us/article/360057488733Read 7 October 2026Compatibility table explicitly Ultra 4850 with Roku OS 9.4 or later for AirPlay 2. Apple host requires iOS 12.3 or macOS 10.14.5 or later, same network. Published minimum compatibility is not the launch OS.

Voice assistantsiVoice assistants supported by the device. A remote microphone and hands-free activation are separate features.

Alexa, Alexa+2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Original Alexa and current exact product page Alexa+. Alexa+ requires a US Amazon account and compatible devices set to US English. Focused experience included, full access across devices requires Prime or Alexa+ Standard. Later software support, not a 2022 launch feature.

Roku Voice, Amazon Alexa, Google Assistant, Apple Siri1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Exact model compatibility supports Alexa and Google Home. Footer explicitly requires Alexa-enabled or Google Assistant-enabled external device. Roku Voice via remote, Siri via separate HomeKit support guide. Not onboard Alexa/Google microphones.7Owner's manualsupport.roku.com/en-us/article/360057488733Read 7 October 2026HomeKit section explicitly Siri control via supported Apple device. Basic remote commands via Siri only within AirPlay session. Google Assistant/Alexa integrations require external assistant devices as product footer states. Roku Voice runs from supplied remote.

Hands-free voice controliControl the streaming device by voice without pressing a button. This may use built-in microphones or a compatible linked smart speaker, phone or headset. The source note names the required device, connection, software and supported commands. A microphone on a press-to-talk remote alone does not qualify.

Yes1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Far-field Alexa control row says Supported. Four-microphone array is built into this device. No linked Echo is required.

Yes2Press releaseroku.com/blog/new-roku-ultraRead 7 October 2026Supplied second-edition Voice Remote Pro explicitly hands-free commands. Enabled remote microphone slider and nearby remote required.

Mobile remote platforms

Android, iOS, Other2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Voice support row names free Fire TV app for Android, iOS and Fire OS. Fire OS is represented by other in the existing enum.

Android, iOS6Owner's manualsupport.roku.com/en-us/article/learn-about-ultraRead 7 October 2026Exact 4850 guide Get the Roku mobile app explicitly iOS and Android for player control. No Windows capability inherited.

Accessibility features

VoiceView screen reader, Screen magnifier, Text Banner, Closed captions, Audio Description, Audio Streaming for Hearing Aids (ASHA)2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Accessibility row lists these features. Captions and Audio Description depend on content. ASHA supports select compatible Bluetooth hearing devices, not every hearing aid.

Text-to-speech screen reader, Closed captioning10Owner's manualsupport.roku.com/en-us/article/enable-the-texttospeech-screen-readerRead 7 October 2026Explicit Roku Ultra support for text-to-speech screen reader in US. Software update may be required. Closed captioning separately linked in exact 4850 guide. No audio-description promise for every app.13Owner's manualsupport.roku.com/en-us/article/turn-on-closed-captioningRead 7 October 2026Roku closed captioning on compatible channel content. Available caption tracks and app settings vary. Exact 4850 guide explicitly links this feature.

Gaming

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Game servicesiPublished native or cloud gaming services. Service availability is time-sensitive. Record software and region requirements in source notes.

Amazon Luna, Xbox Game Pass2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Exact current product page gaming section names Luna and Xbox Game Pass. US availability, subscriptions, accounts, compatible controllers and network required. Xbox support is a later addition, not a launch promise.

Not available

Game controller supportiExplicitly supported controllers or connection methods. Bluetooth alone does not establish game controller support.

Xbox Wireless Controller (Bluetooth), Xbox Adaptive Controller, Sony DualSense (Bluetooth), Sony DualShock 4 (Bluetooth)9Maker product pageaboutamazon.com/news/devices/xbox-gaming-on-amazon-fire-tvRead 8 October 2026Exact supported Cube guide names these controllers over compatible Bluetooth. Microsoft account and Game Pass Ultimate required for subscription catalog. Fortnite has a membership-free option. No all-game or all-controller claim.

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Power

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Power supply

External DC adapter3Owner's manuald1ergij2b6wmg5.cloudfront.net/Amazon+Fire+TV+User+Guides/Fire+TV+Cube+Documentation/FireTVCube_Gen3_Online_QSG_US.pdfRead 8 October 2026Page 1 instructions connect included external power adapter to Cube power port and wall outlet. Not USB power.

External DC adapter1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Supplied external power adapter, dedicated Power connector and 12 V input shown in product details. Not USB-powered.

Rated power inputiDevice input rating, as published. An external adapter output rating is separate.

12 V DC, 1.25 A4Owner's manualdigprjsurvey.amazon.com/csad/help/node/GFAYGLRY3SG69MYNRead 8 October 2026Exact GA5Z9L electrical rating: 12 V DC, 1.25 A. Device input rating. Not a measurement of power consumption or proof of adapter output.

12 V, 1.5 A1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Power input table literally 12 V - 1.5 A. Device input only. Does not prove included adapter output or power consumption.

Included adapter outputiRated output of the included power adapter. This is not device power consumption.

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Max power consumption (claimed)iMaker-published maximum device power consumption. Adapter rating is not proof.

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Standby power (claimed)iMaker-published device standby consumption under the source conditions.

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Measured

None of 4 known

Video playback power (measured)iReviewer-measured device consumption. Video format, app, resolution, power measurement point and equipment belong in source notes.

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Idle power (measured)iReviewer-measured device consumption when idle. Firmware, measurement point and conditions belong in source notes.

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Standby power (measured)iReviewer-measured device consumption in standby. Network state, firmware and measurement point belong in source notes.

Not available

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Boot time (measured)iReviewer-measured time from power-on to usable home screen. Cold boot and standby wake are different. Record timing method and firmware.

Not available

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Dimensions and weight

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DimensionsiDevice body without remote, cables or adapter. Width is left-to-right in normal use, height is bottom-to-top and depth is front-to-back. For a stick, include the fixed plug only when the source does. A stick's length from the plug to its end is depth and its thickness is height. A puck that lies flat has its thickness as height.

Width86Height77Depth86mm(3.4 × 3 × 3.4 in)2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Device Size row: 86 x 86 x 77 mm. Width and depth are the square footprint, height is vertical, corroborated by the technical diagram. Millimetre figures take precedence over rounded inch figures. Excludes adapter and remote.

Width124.4Height25.4Depth127mm(4.9 × 1 × 5 in)1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Maker size table publishes 124.4 x 127.0 x 25.4 mm without axis labels. Exact 4850R Dell retail table separately identifies width 4.9 inches, depth 5 inches and height 1 inch. Those labels establish the axis order. Stored metric values remain literal maker numbers, without converting rounded inches.15Retailer pagedell.com/en-us/shop/homeentertainment/apd/roku-ultra-4850r-network-audio-video-player-wireless-lan-usb-hdmi-cable-included/7t26pn/4850rRead 7 October 2026Exact 4850R Physical Characteristics names width 4.9 inches, depth 5 inches and height 1 inch. Used only to establish the axis order of maker literal metric dimensions.

WeightiDevice only, without remote, cable or power adapter. Included fixed cable or plug conditions belong in source notes.

513g(1.1 lb)2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Device Weight row: 513 g. Device only, excludes adapter and remote.

167.2g(5.9 oz)1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Weight table explicitly 167.2 g (5.9 ounces). Player-only product details, no remote or adapter.

Remote dimensionsiSupplied remote body. Height is its length along the buttons, width is across the buttons and depth is front-to-back.

Width38Height158Depth17mm(1.5 × 6.2 × 0.7 in)2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Enhanced remote Size row: 38 x 158 x 17 mm. Width across buttons, height along buttons, depth thickness.

Not available

Remote weightiSupplied remote weight. State whether replaceable batteries are included.

51g(1.8 oz)2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Enhanced remote Weight row: 51 g without batteries.

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Certifications

None of 1 known

FCC ID

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Other certifications

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In the box

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In the box

Fire TV Cube (3rd Gen), Alexa Voice Remote Enhanced, Power adapter, 2 AAA batteries, Quick Start Guide2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Exact Included in the box row. HDMI, IR extender and Ethernet cables sold separately. Standard Enhanced remote bundle.

Roku Ultra streaming player, Roku Voice Remote Pro (2nd edition), USB-C charging cable for remote, Premium High Speed HDMI cable, Power adapter1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Exact Model 4850R box inventory lists player, second-edition remote, remote USB-C cable, Premium High Speed HDMI cable and power adapter. No remote headphone jack, batteries or old-model extras imported.

HDMI cable includediA separate HDMI cable supplied in the box. A fixed HDMI plug or captive lead does not count. A short HDMI extender supplied with a stick counts, and the source note says it is an extender.

No2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Exact Included in the box row explicitly states HDMI cable sold separately. QSG page 1 also says not included.

Yes1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Exact product box explicitly supplies a separate Premium High Speed HDMI cable.

Links

Not compared

Product page

www.amazon.com/dp/B09BZZ3MM72Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026Exact US standard bundle ASIN B09BZZ3MM7. Remote Pro and protection-plan bundles are excluded from the reference.

www.roku.com/products/roku-ultra1Maker product pageroku.com/products/roku-ultraRead 7 October 2026Exact current 4850R product details, read as ordinary public HTML.

Spec sheet

developer.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.html1Maker product pagedeveloper.amazon.com/docs/device-specs/device-specifications-fire-tv-cube.htmlRead 8 October 2026Exact table headed Fire TV Cube - 3rd Gen (2022). Older Cube tables on the same page are excluded.

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Manual

d1ergij2b6wmg5.cloudfront.net/Amazon+Fire+TV+User+Guides/Fire+TV+Cube+Documentation/FireTVCube_Gen3_Online_QSG_US.pdf3Owner's manuald1ergij2b6wmg5.cloudfront.net/Amazon+Fire+TV+User+Guides/Fire+TV+Cube+Documentation/FireTVCube_Gen3_Online_QSG_US.pdfRead 8 October 2026Official US Gen3 quick-start guide linked from exact product page. Three image-only pages rendered and inspected.

image.roku.com/c3VwcG9ydC1B/Roku-Ultra-2024-QSG.pdf14Owner's manualimage.roku.com/c3VwcG9ydC1B/Roku-Ultra-2024-QSG.pdfRead 7 October 2026Exact Roku support model 4850 link points to Roku-Ultra-2024-QSG.pdf. Independently downloaded one-page 2024 guide. No older UltraLT guide used.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

0 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year2Maker product pageamazon.com/dp/B09BZZ3MM7Read 8 October 2026US Warranty and service row: 1-year limited warranty. Purchased extensions and statutory rights excluded.

1year11Maker spec sheet (PDF)images.thdstatic.com/catalog/pdfImages/5b/5b125123-9613-4138-9e94-2095d9c4cb30.pdfRead 7 October 2026Roku-branded US streaming player warranty. Page 1: one year from original end-user purchase and delivery in US from Roku/authorized seller. Retailer-hosted maker document. Consumer statutory rights excluded.

Both are also in the API. Back to all streaming devices.