Roku Express (3700) vs Roku Premiere (3920)

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Express (3700) compared with Premiere (3920)

	RokuExpress (3700)	RokuPremiere (3920)
Overview
Released
Released	October 2016	October 2018
Video and audio
Resolution
Resolution	1080p	4K (better)
HDR
HDR	None	HDR10 (better)
Video
Video	1920 × 1080 playback; 1280 × 720 interface rendering (Roku's exact Littlefield/3700X developer row)	720p, 1080p and 4K Ultra HD; up to 4K at 60 fps (Roku's exact Gilbert 4K/3920X developer row). HDCP 2.2 required for 4K/HDR
HDR
HDR	–	HDR10 in Roku's exact developer row; the 2019 UK reviews report no Dolby Vision, HDR10+ or HLG
Performance
Software
Software	Roku OS	Roku OS
Chip details
Chip details	MIPS processor at 900 MHz (Roku's exact Littlefield/3700X developer row)	Quad-core processor (Roku announcement); Arm Cortex-A53 and OpenGL ES 2.0 (exact maker developer row)
Memory
Memory	512 MB (Roku's exact Littlefield/3700X developer row)	1 GB (Roku's exact Gilbert 4K/3920X developer row)
Storage
Storage	No verified built-in user storage capacity published in the maker sources read	–
Software and services
Software and services	Roku OS; app availability varies by region and software version	Roku OS; app availability varies by region and software version. US retail availability began in early October 2018; the developer row lists 2019, while the original US maker announcement specifies October 2018
Connections
Wi-Fi
Wi-Fi	Wi-Fi 4	Wi-Fi 4
Ethernet
Ethernet	No	No
Voice remote
Voice remote	No	No
Ports
Ports	HDMI output and Micro-USB power input; no Ethernet (Tom's Guide and Ars Technica)	HDMI output, micro-USB power and reset; no Ethernet, USB media or memory-card slot
Wi-Fi and Bluetooth
Wi-Fi and Bluetooth	802.11b/g/n, single-band 2.4 GHz (Roku launch release and Ars Technica)	Single-band 802.11b/g/n; no 5 GHz support (Tech Advisor)
Remote
Remote	Original infrared remote with navigation, playback and fixed app buttons; no microphone or TV power/volume controls. Mobile-app voice search is separate from the supplied remote	Standard infrared remote with channel shortcuts; no microphone, television power/volume controls or headphone socket. Premiere+ 3921 was the voice-remote bundle
Design
Type
Type	Box	Box
Power
Power	–	USB power cable and mains adaptor; maker recommends the adaptor if the television's USB port supplies insufficient power
In the box
In the box	–	Player, infrared remote, two AAA batteries, HDMI cable, USB power cable, power adaptor and removable adhesive strip (UK quick-start guide)
Size
Size	Small external box supplied with adhesive mounting strip and HDMI cable; infrared receiver must remain visible	–