Smart Home Devices
Amazon Fire TV Cube (3rd Gen) | 4K UHD Streaming Media Player with Alexa
The Fire TV Cube (3rd Gen) is Amazon's highest-spec streaming device. The hexa-core 2.0GHz processor handles 4K HDR content without the frame-drop and UI lag that affects lower-end sticks under load. The Wi-Fi 6E radio connects on the 6GHz band when available, reducing congestion in households with many connected devices. Video output covers 4K UHD, HDR10, HDR10+, HLG, Dolby Vision, and Dolby Atmos — a complete stack for current displays and soundbars. The HDMI In port is the differentiating feature: it lets you run a cable box or other HDMI source through the Cube, after which Alexa controls both streaming content and cable inputs from the same remote, reducing the number of devices on a coffee table. The built-in eight-mic far-field array handles voice commands from across the room without picking up the remote; this operates independently of any connected display. The Cube has 2GB RAM and 16GB of onboard storage — enough to cache multiple streaming apps and offline downloads. The USB-A port accepts external drives or hubs for additional storage. For households streaming 4K content daily on a primary TV and wanting Alexa integration that extends to controlling external gear, the Cube is the appropriate device over the streaming sticks.
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What we like
- + Hexa-core processor handles 4K HDR without the frame drops common on streaming sticks
- + HDMI In lets Alexa control a cable box or other HDMI source from the same remote
- + Wi-Fi 6E reduces congestion in homes with many connected devices
- + Eight far-field mics respond from across the room without picking up the Alexa remote
Watch out for
- - Higher price than any streaming stick — overkill if you only need basic streaming
- - HDMI In only adds value if you have a cable box or external HDMI source to run through it
Our verdict
Best streaming device for primary TV setups with 4K content and Alexa whole-home control. The HDMI In and Wi-Fi 6E separate it from every streaming stick on the market.