Samsung C34J791WTU 34in Wide QHD Curved Monitor LC34J791WTUX

£618.00 £515.00
Out of stock
Samsung C34J791WTU 34in Wide QHD Curved Monitor LC34J791WTUX - Grade B Ex Demo, very light scratch on screen

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Thunderbolt™ 3
World’s First Thunderbolt 3 Curved Monitor

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.

Curved for Comfort
The curved screen is engineered to follow the natural curve of your eyes for a more immersive and comfortable viewing experience. Studies by Harvard Medical School and Seoul National University Hospital found the screen reduced eyestrain in users compared to flat screens and less curved monitors.

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 efficiently and in comfort. Forget about inconvenient dual monitor set ups and experience truly seamless multitasking on a single screen.

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 an enhanced entertainment experience when viewing videos and playing games.

Picture-by-Picture (PBP) lets you display to two sources onscreen at their native resolution. And for optimal 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 not only more hues than conventional monitors but also colours that are brighter, crisper and more natural — especially reds and greens. And every monitor is factory calibrated to ensure the most accurate and life-like images.

3000:1 Contrast Ratio

Samsung’s VA panel technology provides a 3000:1 contrast ratio that delivers deeper blacks, brilliant whites, and richer colours for clearer, more vibrant movie and game scenes.

AMD FreeSync
AMD FreeSync synchronizes the refresh rates of your graphics card and the CJ79 to minimise image tearing and stutter. The smoother transition between image frames provides seamless gameplay and video playback for uninterrupted viewing.

7W Stereo Speakers
The built-in 7W stereo speakers provide a powerful soundstage for you to enjoy all your music, movies and games in rich, clear sound while also saving space on your desk.

Smoother Gameplay
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.

Stylish Design
With its curved screen bezeless on three sides for enhanced viewing and its rear panel — finished in glossy white and curving horizontally and vertically — neatly concealing cables, the CJ79’s slim and striking profile is the perfect complement to any Thunderbolt 3 Mac or PC.

Short Description Samsung C34J791WTU 34in Wide QHD Curved Monitor LC34J791WTUX - Grade B Ex Demo, very light scratch on screen
mpn LC34J791WTUX
Screen Size 34in


Display diagonal 86.4 cm (34")
Display resolution 3440 x 1440 pixels
Native aspect ratio 21:9
Panel type VA
Display brightness (typical) 300 cd/m²
Response time 4 ms
HD type UltraWide Quad HD
Screen shape Curved
Supported graphics resolutions 3440 x 1440
Contrast ratio (typical) 3000:1
Maximum refresh rate 100 Hz
Viewing angle, horizontal 178°
Viewing angle, vertical 178°
Display number of colours 16.78 million colors
Aspect ratio 21:9
Dynamic contrast ratio marketing name Mega Contrast
Screen curvature 150 cm
Viewable size, horizontal 79.7 cm
Viewable size, vertical 33.4 cm
sRGB coverage (typical) 125%
NTSC coverage (typical) 88%
Colour gamut 92%
Quantum dot color technology
Display brightness (min) 250 cd/m²
Adobe RGB coverage 92%


AMD FreeSync
VESA Adaptive Sync support
Flicker-free technology


Built-in speaker(s)
Number of speakers 2


Market positioning Gaming
Product colour Gray
Certification Windows 10.0

Ports & interfaces

Built-in USB hub
DisplayPorts quantity 1
USB hub version 3.2 Gen 1 (3.1 Gen 1)
USB Type-A downstream ports quantity 2
HDMI ports quantity 1
HDMI version 2.0
DisplayPort version 1.2
Thunderbolt ports quantity 2
DC-in jack


VESA mounting
Height adjustment 10 cm
Panel mounting interface 100 x 100 mm
Tilt up angle range -14 - 22°
Tilt down angle range -2 - 34°


Energy efficiency class C
Annual energy consumption 95 kWh
Power consumption (typical) 65 W
Power consumption (standby) 0.5 W
Power consumption (off) 0.3 W
AC input voltage 100 - 240 V
External power adapter

Operational conditions

Operating temperature (T-T) 10 - 40 °C
Operating relative humidity (H-H) 10 - 80%

Weight & dimensions

Width 808.7 mm
Depth 167 mm
Height 362.8 mm
Weight 6.3 kg
Width (with stand) 808.7 mm
Depth (with stand) 309.4 mm
Height (with stand) 516 mm
Weight (with stand) 7.7 kg

Packaging data

Stand included
Stand type HAS stand
Cables included HDMI,Thunderbolt
Package width 896 mm
Package depth 371 mm
Package height 589 mm
Package weight 13.9 kg

Other features

AC adapter included
Power cable length 1.5 m
Power consumption (max) 180 W
On/off switch
sRGB coverage (min) 120%
TV tuner integrated
Picture-by-Picture (PbP)
Quick start guide
ECO mode
Game mode
Active display area (W x H) 797.22 x 333.72 mm
Samsung Eye Saver Mode
Samsung Magic Function MagicBright, MagicUpscale

This item has been on display or used for demonstration purposes only. The screen has a very light scratch which isn't very noticeable when powered on. Otherwise the unit is in very good condition and working perfectly.

The original box will have been opened and resealed but all original protective packaging and accessories are included.