34" Thunderbolt™ 3 Curved Monitor with 21:9 Wide Screen

Two Thunderbolt™ 3 ports to connect compatible Macs and PCs. Transmits video and data at speeds of up to 40Gbps — 8 times faster than USB 3.0 Simultaneously charges devices (up to 85W)
size 34"

More Power. More Connectivity. More Possibility*

Connect to Infinite Possibilities

*Compared to previous Samsung LC34H890WJEXXY. Screen images simulated for illustrative purposes.

Thunderbolt™ 3

The CJ79 features two Thunderbolt™ 3 ports to connect compatible Macs and PCs. Thunderbolt™ 3 transmits video and data at speeds of up to 40Gbps — 8 times faster than USB 3.0 — and simultaneously charges devices (up to 85W), all over a single cable.

Thunderbolt™ 3

*Thunderbolt cable sold separately.

Curved for Comfort

The curved screen is engineered for an immersive and comfortable viewing experience. Studies by Harvard Medical School and Seoul National University Hospital that were sponsored by Samsung found that fewer subjects reported eye-strain, difficulty focusing and blurred vision symptoms when viewing a curved monitor than when viewing a flat monitor.^

Curved for Comfort

^Assuming 1m viewing distance. "Comparison of flat and curved monitors: Eyestrain caused by intensive visual search task", 2016. Based on eye-strain questionnaire involving the use of a 34” curved Samsung monitor and equivalent 34” Samsung flat monitor. Study sponsored by Samsung.

34” Ultra-Wide Screen

The 34’’ ultra-wide curved display with its 21:9 aspect ratio provides all the workspace you need to multi-task in comfort. Forget about inconvenient dual monitor set ups and experience multitasking on a single screen.

34” Ultra-Wide Screen

*Screen images simulated for illustrative purposes.


Picture-by-Picture (PBP) lets you display from two sources onscreen at their native resolution. And for multi-tasking, with Picture-in-Picture (PIP) you can resize the second source to up to 25% of the screen and position it anywhere.

Quantum Dot Colour

Supporting up to 125%‡ sRGB colour space, Quantum Dot technology delivers colours that are bright, crisp, and natural — especially reds and greens. And every monitor is factory calibrated, designed to ensure accurate images

3000:1 Contrast Ratio

Samsung’s VA panel technology provides a 3000:1 contrast ratio that delivers deep blacks, brilliant whites, and rich colours for clear, vibrant images.

3000:1 Contrast Ratio

*Screen images simulated for illustrative purposes.

AMD FreeSync

AMD FreeSync synchronizes the refresh rates of your graphics card and the CJ79, designed to minimize image tearing and stutter. The smooth transition between image frames provides superb gameplay and video playback for uninterrupted viewing.

Image showing a simulated screen of gaming with AMD Freesync

*Screen images simulated for illustrative purposes.

Fast 100 Hz Refresh Rate

The fast 100 Hz screen refresh rate provides smoother, silkier mouse sensitivity for enhanced productivity in any application. It also reduces screen stutter in fast-moving action scenes for a flawless gaming experience.

Fast 100 Hz Refresh Rate

Multiple Inputs

Two Thunderbolt 3 ports as well as, DP, HDMI and USB inputs, the CJ79 provide multiple connection options for PCs, consoles, and external devices. And the built-in 7-watt stereo speakers offer a superb entertainment experiences when viewing videos and playing games.

Multiple Inputs
  • Display
    • Screen Size (Inch) 34.0
    • Screen Size (cm) 86.4
    • Screen Size (Class) 34
    • Flat / Curved Curved
    • Active Display Size (HxV) (mm) 797.22mm x 333.72mm
    • Screen Curvature 1500R
    • Aspect Ratio 21:9
    • Panel Type VA
    • Brightness (Typical) 300cd/m2
    • Peak Brightness (Typical) N/A
    • Brightness (Min) 250cd/m2
    • Contrast Ratio Static 3000:1(Typ),2400:1(Min)
    • Dynamic Contrast Ratio Mega
    • HDR(High Dynamic Range) N/A
    • Resolution 3,440 x 1,440
    • Response Time 4(GTG)
    • Viewing Angle (H/V) 178/178
    • Color Support 16.7M
    • Color Gamut (NTSC 1976) 88%
    • Color Gamut (DCI Coverage) 92%
    • sRGB Coverage 125%(Typ.), 120%(Min)
    • Adobe RGB Coverage 92%
    • Refresh Rate 100Hz
  • General Feature
    • Samsung MagicAngle N/A
    • Samsung MagicBright Yes
    • Samsung MagicUpscale Yes
    • Samsung MagicRotation Auto N/A
    • Eco Saving Plus Yes
    • Eco Motion Sensor N/A
    • Eco Light Sensor N/A
    • 0.00 W Off mode N/A
    • Eye Saver Mode Yes
    • Flicker Free Yes
    • Picture-In-Picture Yes
    • Picture-By-Picture Yes
    • Active Crystal Color N/A
    • Quantum Dot Color Yes
    • Game Mode Yes
    • Image Size Yes
    • USB Super Charging N/A
    • Daisy Chain Yes (Thunderbolt)
    • Easy Setting Box Yes
    • Windows Certification Windows10.0
    • FreeSync Yes
    • FreeSync 2 N/A
    • Smart Eco Saving N/A
    • Off Timer Plus N/A
    • Smartphone Wireless Charging N/A
    • Game Color Mode N/A
    • Screen Size Optimizer N/A
    • Black Equalizer N/A
    • Low Input Lag Mode N/A
    • Refresh Rate Optimizor N/A
    • Custom Key N/A
    • Super Arena Gaming UX N/A
    • Sound Interactive LED Lighting N/A
  • Interface
    • Wireless Display No
    • D-Sub No
    • DVI No
    • Dual Link DVI No
    • Display Port 1 EA
    • Display Port Version 1.2
    • Display Port Out No
    • Display Port Out Version N/A
    • Mini-Display Port No
    • HDMI 1 EA
    • HDMI Version 2.0
    • Audio In No
    • Headphone Yes
    • USB Ports 2
    • USB Hub Version 3
    • USB-C No
    • USB-C Charging Power N/A
    • Thunderbolt 3 2 EA
    • Thunderbolt 3 Charging Power (Port 1) 85W
    • Thunderbolt 3 Charging Power (Port 2) 15W
    • Ethernet (LAN) N/A
  • Audio
    • Speaker Stereo
    • USB Sound Bar (Ready) No
  • Operation Conditions
    • Temperature 10~40 ℃
    • Humidity 10~80,non-condensing
  • Calibration
    • Factory Tunning Yes
    • Built in Calibration Engine N/A
    • LUT(Look-up Table) Bit Depth N/A
    • Gray Balance N/A
    • Uniformity Correction N/A
    • Color Mode N/A
    • CMS(Color Management Software) N/A
    • Factory Calibration Report N/A
  • Design
    • Colour Gray
    • Stand Type HAS
    • HAS(Height Adjustable Stand) 100.0 ± 5.0 mm
    • Tilt HAS TOP : -14˚(±4˚) ~ 22˚(±4˚), HAS DOWN : -2˚(±4˚) ~ 34˚(±4˚)
    • Swivel N/A
    • Pivot N/A
    • Wall Mount 100 x 100
  • Eco
    • Energy Efficiency Class 2
    • Recycled Plastic N/A
  • Circuit Amps
    • Power Supply AC 100~240V
    • Power Consumption (Max) 180 W
    • Power Consumption (Typ) 64.46 W
    • Power Consumption (DPMS) Less than 0.5(HDMI/DP Input Condition)
    • Power Consumption (Off Mode) Less than 0.3 W
    • Power Consumption (Yearly) N/A
    • Type External Adaptor
  • Set Dimension (WxHxD)
    • Net Dimension with Stand (WxHxD) 808.7 x 516.0 x 309.4 mm
    • Net Dimension without Stand (WxHxD) 808.7 x 362.8 x 167.0 mm
    • Package Dimension (HxWxD) 896.0 x 589.0 x 371.0 mm
  • Weight
    • Net Weight with Stand 7.7 kg
    • Net Weight without Stand 6.3 kg
    • Package Weight 13.9 kg
  • Accessory
    • Power Cable Length 1.5 m
    • D-Sub Cable N/A
    • DVI Cable N/A
    • HDMI Cable Yes
    • HDMI to DVI Cable N/A
    • DP Cable N/A
    • USB Type-C Cable N/A
    • Thunderbolt 3 Cable Yes
    • Mini-Display Gender N/A
    • Install CD N/A
    • Quick Setup Guide Yes
    • Clean Cloth N/A
  • Disclaimer
    • Disclaimer N/A

Features and specifications are subject to change without prior notification. Images are used for illustrative purposes only.

Manual Download

34" Thunderbolt™ 3 Curved Monitor with 21:9 Wide Screen (LC34J791WTEXXY)






Device(Install) ver 1.0