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Samsung C34J79 34” curved monitor with Thunderbolt 3
4.5Overall Score

The Samsung C34J79 is the world’s first 34” quantum dot, QLED, curved monitor with Thunderbolt 3 connectivity.

GadgetGuy had the C34J79 for a few weeks, and it is one that is extremely difficult to give back. A huge 34” 1500R curved, 21:9 ultra-wide, 3440 x 1440 screen. Colours that only Quantum Dot can provide. Add Thunderbolt connectivity, and it is almost perfect.

Let’s look at it from a business perspective where screen real estate is everything. While it would make a good consumer gaming monitor e-sports, fans would look to dedicated ones.

What is a C34J79 and Thunderbolt?

(Australian website here)

At CES 2018 the 34” C34J79 took honours as the world’s first curved Thunderbolt 3 monitor. There are a growing number of Thunderbolt 3 monitors from BenQ, Philips, Dell, Acer, LG and more. Thunderbolt is the HDMI of the future.

Thunderbolt 3 is on modern Mac/Books and premium Intel 8th generation Windows 10 devices. It has up to 40Gbps data transfer, DisplayPort and power transfer up to 85W over the one USB- C cable.

This monitor is different in that it has two Thunderbolt ports – one downstream from the PC and one can daisy chain another Thunderbolt monitor or device.

Simply put you can use Thunderbolt 3 instead of HDMI or DisplayPort to display an image.

1500R Curve

A 1500R curve (a 1.5m radius to complete a circle) is a little tighter than the 1800R curve found on many Samsung monitors. 1500R means the monitor can sit quite close to the human eye which has a natural radius of about 1000R at 600mm distance.

This almost bezel-less 34” fits into the space a 32” flat monitor does so it is compact lengthwise and slightly deeper.

The actual screen size is 797.22mm x 333.72mm. An A4 sheet of paper is 210 x 297mm, so it fits 3.8 across at full page size with room for Word’s top ribbon command bar above. Perfect.

I tested it beside my reference HP Z34c 34” 3000R, 3440 x 1440, 21:9 screen (same resolution and format) and while I love the HP, I can see the Samsung’s difference in crisper text and blacker blacks. To me, the ultimate would be two Samsung’s in a dual monitor setup – like mission control. Its bezels are narrow, so it is good for that purpose.


The 8-bit colour is factory calibrated and very accurate. 125% sRGB and, 92% DCI-P3 means lifelike and realistic colours. It is perfect for office use and very close to prosumer still photo editing standards.

Brightness is 250/300 nits (minimum/maximum), and contrast is 2400/3000 (minimum/maximum). It does not have HDR, but it has a good black and bright area definition. It is very good under standard office or home lighting and has an effective anti-glare screen.


21:9 gives an immersive viewing experience.

It is a 100Hz VA panel and supports AMD Freesync and 4ms grey-to-grey. Although it has a game mode, gamers will not flock to this as it lacks some of the dedicated e-sports features. It is great for the casual gamer.