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SAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor (LS34J550WQNXZA) – 75Hz Refresh, WQHD Computer Monitor, 3440 x 1440p Resolution, 4ms Response, FreeSync, Split Screen, HDMI, Black

SAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor (LS34J550WQNXZA)

Bottom line: The SAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor: 3440 x 1440 WQHD across 21:9 — about 2.4x the pixel density of Full HD; main trade-off: 75Hz refresh rate trails the 144Hz+ panels competitive shooters expect.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For gaming and productivity monitors, synthesises manufacturer specs against measured monitor reviews (RTINGS, Monitors Unboxed) rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. How we check display specs →

Pros & Cons

Pros

  • ✓ 3440 x 1440 WQHD across 21:9 — about 2.4x the pixel density of Full HD
  • ✓ 3000:1 VA contrast ratio delivers deeper blacks than most IPS ultrawides
  • ✓ PBP/PIP plus embedded split-screen software replaces a two-monitor setup
  • ✓ AMD FreeSync cuts tearing and stutter without an extra sync module
  • ✓ 100 x 100mm VESA mounting for arms and wall mounts

Cons

  • ✗ 75Hz refresh rate trails the 144Hz+ panels competitive shooters expect
  • ✗ 4ms response time can show smearing in fast motion on a VA panel
  • ✗ Tilt-only stand: -1.5 to 15 degrees, no height or swivel adjustment
  • ✗ No USB hub — HDMI and DisplayPort only for connectivity

Manufacturer description

The Samsung 34-Inch SJ55W Ultrawide Gaming Monitor (LS34J550WQNXZA) stretches your desktop across a 21:9 VA panel at 3440 x 1440 WQHD, roughly 2.4 times the pixel density of Full HD. That extra horizontal room is the point: you get a genuine ultrawide canvas for racing sims and strategy games, plus PBP/PIP and Samsung's embedded split-screen software so you can run two sources side by side without a second display. The 3000:1 contrast ratio of the VA panel pushes deeper blacks than typical IPS ultrawides, and 178-degree horizontal and vertical viewing angles keep colors consistent when you…

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SpecPicks Verdict

SpecPicks scored SAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming monitors category. Compare with similarly-priced alternatives in the gaming monitors category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming monitors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Is the Samsung SJ55W good for competitive gaming?

It runs at 75Hz with a 4ms response time and AMD FreeSync, which suits single-player, sim, and strategy titles well. For competitive shooters where 144Hz or higher is the norm, a faster ultrawide is the better fit.

What resolution and aspect ratio does this monitor use?

3440 x 1440 (WQHD) at a 21:9 aspect ratio across a 34-inch VA panel — roughly 2.4 times the pixel density of Full HD.

Can I mount the SJ55W on a monitor arm?

Yes. It uses a 100.0 x 100.0mm VESA wall-mount pattern, so standard 100x100 arms and wall mounts fit. Panel dimensions without the stand are 32.6 x 14.5 x 4.1 inches.

What ports does it have?

HDMI ports plus a DisplayPort input, so you can connect multiple sources at once. Power is AC 100-240V, drawing a maximum of 59W and 0.3W or less in standby.

Can it show two computers on screen at the same time?

Yes. It supports PBP and PIP along with Samsung's embedded split-screen software, letting you view two input sources side by side instead of adding a second monitor.

Key Features

  • 34-INCH ULTRAWIDE MONITOR with WQHD resolution (3440 x 1440p).Wall-Mount (Size mm) 100.0 x 100.0.Specific uses for product - Personal, gaming, business
  • Viewing Angle is 178° (H) / 178° (V); Aspect Ratio is 21:9
  • PERFECT FOR DUAL MONITOR USAGE with powerful multitasking split screen features – PBP/PIP and easy to use embedded split screen software
  • AMD FREESYNC synchronizes the refresh rate of your graphics card and widescreen monitor to reduce image tear and stutter
  • CONNECT MULTIPLE INPUT SOURCES thru HDMI ports and display port. Power Supply Type - AC 100-240V. Power Consumption (Max)- 59 W. Power Consumption (Stand-by)- less then equal to 0.3 W. Max Stand By Power (DPMS)- less then equal to 0.5 W
  • SLIM PANEL, ELEGANT Y-STAND AND METALLIC BEZEL bring quality and style to the workplace or home. Tilt- (-1.5°)（plus/minus 1.0°）upto 15.0°（plus/minus 2.0°）

Full Specifications

BrandSamsung
ColorBlack
ShapeRectangular
Voltage110 volts
Brightness300 candela_per_square_meter
Dimensions32.6 x 14.5 x 4.1 inch
Model Name34" SJ55W Ultra WQHD Monitor
ResolutionQHD Ultra Wide 1440p
Unit Count1 Count
Screen Size34 inches
Aspect Ratio21:9
Display TypeLCD
Model NumberLS34J550WQNXZA
Refresh Rate75 hertz
Adaptive SyncFreeSync
Mounting TypeWall Mount
Response Time4 milliseconds
Screen FinishGlossy
Viewing Angle178 degrees
Warranty Type1 Year Limited Warranty
Full listing titleSAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor (LS34J550WQNXZA) – 75Hz Refresh, WQHD Computer Monitor, 3440 x 1440p Resolution, 4ms Response, FreeSync, Split Screen, HDMI, Black

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SAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor (LS34J550WQNXZA) – 75Hz Refresh, WQHD Computer Monitor, 3440 x 1440p Resolution, 4ms Response, FreeSync, Split Screen, HDMI, Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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SAMSUNG 34-Inch SJ55W Ultrawide Gaming Monitor (LS34J550WQNXZA) – 75Hz Refresh, WQHD Computer Monitor, 3440 x 1440p Resolution, 4ms Response, FreeSync, Split Screen, HDMI, Black
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