Roku Express 4K (3940) vs Roku Streaming Stick+ (3810)

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Express 4K (3940) compared with Streaming Stick+ (3810)

	RokuExpress 4K (3940)	RokuStreaming Stick+ (3810)
Overview
Released
Released	May 2021	October 2017
Video and audio
Resolution
Resolution	4K	4K
HDR
HDR	HDR10, HDR10+ and HLG (better)	HDR10
Video
Video	Up to 4K at 60 fps (Roku's exact Marlin/3940X developer row); HDCP 2.2 required for 4K/HDR	Up to 4K HDR at 60 fps; AVForums identifies HDMI 2.0a with HDCP 2.2 and tested automatic display refresh-rate matching on the original software
HDR
HDR	HDR10, HDR10+ and HLG (Roku's exact Marlin/3940X developer row); no Dolby Vision	HDR10; Dolby Vision is not supported
Audio
Audio	–	AVForums found Dolby Digital Plus Atmos output available, but no UK streaming apps using it at the time; its Plex tests passed multichannel core Dolby Digital and DTS, not Dolby TrueHD or DTS-HD MA. TechRadar's broad claim of no Atmos conflicts with that test, so the main Atmos field is omitted
Performance
Software
Software	Roku OS	Roku OS
Chip details
Chip details	Arm Cortex-A55; OpenGL ES 2.0 (Roku's exact Marlin/3940X developer row)	–
Memory
Memory	1 GB (Roku's exact Marlin/3940X developer row)	–
Storage
Storage	Internal storage serves system/channel use; maker sources used do not publish user-accessible capacity	–
Software and services
Software and services	Launched with Roku OS 10. App availability varies by region and software version. May 2021 on-sale month is from the exact UK Tech Advisor review; the maker developer table gives only 2021. Cord Busters identifies this model as the UK replacement for Premiere 3920	Launched with Roku OS 8; app availability and software features vary by country and over time
Connections
Wi-Fi
Wi-Fi	Wi-Fi 5	Wi-Fi 5
Ethernet
Ethernet	No	No
Voice remote
Voice remote	No	Yes
Ports
Ports	HDMI output, micro-USB power/compatible Ethernet adaptor connection and reset. No built-in Ethernet socket; USB Ethernet adaptor sold separately	HDMI output and Mini USB power connection; no built-in Ethernet socket or USB media playback port
Wi-Fi and Bluetooth
Wi-Fi and Bluetooth	Dual-band 802.11ac Wi-Fi (Tech Advisor)	Dual-band 802.11ac MIMO receiver in the supplied power cable (AVForums); Roku claimed up to four times the wireless range of its 2016 Streaming Stick
Remote
Remote	Original standard infrared remote with channel shortcuts; no microphone, television power/volume controls or headphone socket. Express 4K+ 3941 includes the voice remote instead	US launch bundle includes a voice remote with TV power and volume controls. AVForums' original UK review unit had TV power and volume but no direct remote voice search; later remote bundles differ
Design
Type
Type	Box	Stick
Power
Power	USB power cable and mains adaptor supplied; use the adaptor if the television USB port provides insufficient power	Proprietary power cable incorporates the wireless receiver; supplied power adaptor, with suitable TV USB power also tested by both reviews
Size
Size	–	3.7 × 0.8 × 0.47 in; 0.9 oz (TechRadar)
In the box
In the box	Player, infrared remote, batteries, premium high-speed HDMI cable, USB power cable, power adaptor and removable adhesive strip	Streaming stick, power cable with wireless receiver, power adaptor and remote; AVForums' UK review bundle also included USB extension cable and two AAA batteries