Dell Alienware AW3423DW Review: 3440×1440 175Hz G-SYNC QD-OLED UltraWide Curved Gaming Monitor

The Dell Alienware AW3423DW is the first QD-OLED gaming monitor available! It's a 3440x1440 175Hz ultrawide curved model with G-SYNC, HDR, and more!

Bottom Line

Thanks to its QD-OLED panel with an infinite contrast ratio, high peak brightness and wide color gamut, the AW3423DW offers an incredible image quality, while its low input lag, G-SYNC up to 175Hz and instantaneous response time speed ensure flawless performance. On top of that, it has a robust and stylish design, a three-year warranty and a reasonable price!



Update: There’s a new firmware update available that reduces input latency and fixes occasional screen flickering. While Dell initially claimed that the firmware couldn’t be updated due to the G-SYNC module, it seems NVIDIA figured out a way to do so now.

You can download the firmware update from Dell’s French product page for the AW3423DW or here (direct download link). It will update the older M0B10X variants to M0B106 or the newer revision models from M0B20X to M0B205. You will find full instructions for installing the firmware in the downloaded PDF file.

Gamers have been waiting for viable OLED gaming displays for quite some time. Until now, your options were restricted to 48-inch models and larger, small portable screens or professional monitors with a 60Hz refresh rate.

The Dell Alienware AW3423DW finally comes to the rescue in a popular 34″ 3440×1440 ultrawide form factor with a high refresh rate, G-SYNC module and a reasonable price.

On top of that, it boasts an impeccable OLED panel enhanced by quantum dots for even higher brightness, wider color gamut and better burn-in resistance than that of previous OLEDs.

Image Quality

Just like every OLED, the QD-OLED panel of the Dell AW3423DW has self-emissive pixels allowing it to reach essentially an infinite contrast ratio with true blacks.

Moreover, it has a high 1,000-nit peak brightness and a wide 99.3% DCI-P3 color gamut coverage (~149% sRGB gamut size, ~95% Adobe RGB gamut coverage).

As a result, the monitor can simultaneously display deep blacks, bright punchy highlights and vibrant colors without any backlight bleeding, glowing or blooming for an incredibly immersive HDR viewing experience!

For SDR content, the typical brightness amounts to 250-nits, which is more than bright enough under normal lighting conditions.

In comparison to LG’s W-OLEDs, the Dell Alienware AW3423DW is notably brighter.


Not only do you get a higher 1000-nit peak brightness in the 1 – 3% white window as opposed to ~700-nits, but also double sustained brightness with a 100% window; when displaying a full white window, the AW3423DW can sustain 250-nits for both SDR and HDR, while LG’s OLEDs are limited to 200-nits for SDR and ~150-nits for HDR.

This also means that ABL (Automatic Brightness Limiter) is not obtrusive on Dell’s monitor as it is on LG’s OLEDs.

As the name suggests, ABL limits the brightness in order to preserve the panel. So, if you’re using the LG C1 at a high brightness setting, putting a mostly white document on the screen will make ABL decrease its brightness to ~150-nits. Then, when you move something around so that there are fewer bright elements on the screen, the brightness will increase again. This frequent change in brightness can become annoying.

One way to prevent it is to just decrease the brightness to ~150-nits so that ABL doesn’t get triggered.

However, since the Dell Alienware AW3423DW has a much higher sustainable brightness at a 100% window, it can be a lot brighter without ABL kicking in, and even when it’s triggered, it will be much less noticeable.

Additionally, because QD-OLED offers more saturated colors (149% sRGB gamut size vs 135% sRGB), perceived brightness is also higher.

The AW3423DW has two HDR modes: HDR400 TrueBlack to meet VESA’s DisplayHDR certification (limited to ~400-nits) and HDR Peak 1000 (for up to 1,000-nits, but with more aggressive ABL), which we recommend using.

DisplayHDR 400 True Black

Moving on, the monitor is factory-calibrated at Delta E < 2 for excellent accuracy out of the box and you will find dedicated DCI-P3 and sRGB color modes with adjustable brightness and gamma under the ‘Creator’ picture preset in the OSD (On-Screen Display) menu.

The 3440×1440 ultrawide resolution provides you with extra horizontal screen space in comparison to standard 16:9 displays. You can think of the Dell Alienware AW3423DW as a 27″ 2560×1440 monitor that’s ~33% wider.

The added horizontal screen space is great for productivity work and audio/video editing due to the wider view of timelines. Movies natively shot at the ~21:9 aspect ratio are displayed without black borders at the top and bottom of the screen, and you get an extended field of view in compatible games.

In some games that don’t support the ultrawide format, you’ll have to choose between having black bars at the sides of the screen or zooming in the picture to fill the screen, which will crop a bit from the top and bottom of the image.

Luckily, most games support ultrawide resolutions natively or via quick and simple mods or patches. It’s usually competitive games, mainly Valorant and Blizzard’s games (StarCraft, Diablo 2 Resurrected and Overwatch) that don’t support ultrawide formats due to ‘competitive advantages.’

The 3440×1440 resolution also suits the 34″ viewable screen of the Dell Alienware AW3423DW monitor very well. You get a pixel density of roughly 110 PPI (pixels per inch), so you get a lot of screen real estate as well as sharp details and text, without any scaling necessary. It’s also a lot less demanding on your GPU in comparison to 4K UHD or the 2160p ultrawide resolution (5120×2160).

Note that the Dell AW3423DW monitor has the regular RGB subpixels, but in a triangular layout, which can cause some fringing on small text. It’s not noticeable in games and videos, and applying ClearType can alleviate the issue (for even better results you can try Better ClearType Tuner and Mac/FreeType).

QD OLED Subpixel Layout

Lastly, the monitor has 178° wide viewing angles, ensuring flawless image quality regardless of the angle you’re looking at the screen, and it supports 10-bit color depth for 1.07 billion colors.


g sync compatible vs native g sync

Another big advantage of OLED technology is the instantaneous pixel response time speed. You won’t find any trailing or overshoot artifacts in fast-paced games on the Dell AW3423DW, regardless of the refresh rate.

Further, the monitor is equipped with a dedicated NVIDIA G-SYNC module that ensures flawless variable refresh rate performance for tear-free gameplay up to 175FPS.

FreeSync is supported over DisplayPort as well in case you have an AMD GPU, but not over HDMI. G-SYNC, however, works over HDMI too.

As it’s the case with all OLED displays so far, some near-black gamma shifts can be observed in dark scenes when using variable refresh rate. It’s more noticeable at 175Hz than 144Hz, but it only occurs in rare scenarios and won’t bother most users.

The maximum refresh rate of 175Hz offers a subtle but noticeable boost in motion clarity in comparison to 120Hz, which was previously the maximum refresh rate of any OLED gaming display.

Overall, the combination of G-SYNC, 175Hz, instantaneous response time and imperceptible input lag provides you with an exceptionally responsive and enjoyable gaming experience.

Sadly, Motion Blur Reduction is not available, which could’ve reduced the unavoidable perceived motion blur a bit.

Probably the most pleasant surprise to come from the Dell AW3423DW is the three-year warranty that covers burn-in, allowing you to game for hours without worrying about any static elements becoming permanently stuck on the image.

Burn-in and image retention are still possible, but as long as you use the monitor responsibly, it shouldn’t be an issue; don’t leave the screen enabled with a static image for too long and use the monitor’s built-in pixel and panel refresher features.

These features are enabled by default. After four to twenty hours of cumulative usage of the screen, Pixel Refresher will run for seven minutes once the monitor enters the power-saving mode in order to prevent image retention. Similarly, Panel Refresh will run after 1500 cumulative hours to prevent burn-in.

There’s also a built-in pixel shift feature. The monitor actually has a 34.18″ viewable screen and its 3440×1440 resolution occasionally moves a bit to prevent burn-in. This is normal and not noticeable during use.


Dell AW3423DW OSD Menu

An intuitive directional joystick is used for OSD navigation and for certain shortcuts. The menu is well-organized and offers plenty of useful features.

Noteworthy gaming features include Dark Stabilizer (improves visibility in dark scenes by altering the gamma curvature), crosshair overlays, on-screen timers, a refresh rate tracker and various picture presets (Standard, Creator, FPS, RPG, MOBA/RTS, Racing and three custom Game modes, etc.).

You’ll also find the standard image adjustment tools, such as brightness, contrast, color temperature and input source selection (including automatic detection).

There’s an integrated light sensor that can adjust the monitor’s brightness according to ambient lighting, while the backlight of the monitor is flicker-free and a built-in low-blue light filter is available.

The Dell Alienware AW3423DW display also features the AlienFX lighting at four different zones (logo and ring at the rear, strip beneath the bottom bezel and the power button), all of which can be customized individually to shine in different colors and patterns.

You can make all of the RGB LED adjustments in the OSD menu or in the Alienware Command Center desktop application.

Design & Connectivity

Dell Alienware AW3423DW Review

The stand of the monitor is quite robust and versatile with up to 110mm height adjustment, -5°/21° tilt, +/- 20° swivel, +/- 5° pivot for balancing and 100x100mm VESA mount compatibility.

Next, the screen has a subtle 1800R curvature for added immersion and a semi-gloss finish; the screen is glossy with an anti-reflective treatment that prevents reflections without making the image as grainy as it’s the case with matte anti-glare coatings.

If there’s too much light directed at the screen, the coating will diffuse it thus making blacks appear grayish. So, for the optimal viewing experience, you’ll have to adjust the lighting in your room accordingly.

Overall, the coating makes the image much more vivid in comparison to standard matte anti-glare displays, but it’s not quite as clear as that of LG’s OLEDs; it is better at handling reflections though and as long as there’s no direct lighting in front of the screen, you’ll be fine.

Connectivity options are abundant and include DisplayPort 1.4, two HDMI 2.0 ports (limited to 100Hz at 3440×1440), a headphone jack, a line-out and a quad-USB 3.0 hub.

On the Xbox consoles, 1080p 120Hz and 1440p 120Hz modes are supported with variable refresh rate, but HDR is not. On the PS5, you can use 1080p 120Hz without HDR and 1080p 60Hz with HDR; VRR is not supported. As consoles don’t support ultrawide formats, you’ll be limited to the 16:9 aspect ratio with black bars at the sides of the screen.

Since the DisplayPort 1.4 input on the monitor doesn’t support DSC (Display Stream Compression) due to its G-SYNC module, there’s only enough bandwidth for 175Hz with 8-bit color or 144Hz with 10-bit color without resorting to chroma subsampling.

In truth, the difference between both 10-bit vs 8-bit color and 144Hz vs 175Hz is subtle in real use, so you can pick whichever you personally prefer. Most games in which you might actually notice improvements by 10-bit color are usually too demanding to be run at over 144FPS and high picture settings anyway.

There are two cooling fans, one for the panel and one for the G-SYNC module. Both are fairly silent, though it seems some units have louder fans than others. Most users won’t be bothered by them though.

Price & Similar Monitors

The Dell Alienware AW3423DW goes for $1,100 – $1,300, which is quite reasonable considering its alternatives.

However, you should also check out the newer AW3423DWF version, which goes for up to $200 less. It uses the same panel but doesn’t have a G-SYNC module, so you get more features, including PiP/PbP, updatable firmware, one less cooling fan and a slightly slimmer design.

There are 6 monitors that use the same QD-OLED panel, offering a similar image quality and performance. However, they still have some differences in features, warranty, connectivity options, price, HDR accuracy, etc. Here’s how they compare:

 Dell AW3423DWFDell AW3423DWMSI MEG342CMSI 341CQPSamsung OLED G8Philips Evnia 34M2C8600
Max. Refresh Rate165Hz (120Hz 10-bit)175Hz (144Hz 10-bit)175Hz 10-bit175Hz 10-bit175Hz 10-bit175Hz 10-bit
Ports2x DP 1.4,
1x HDMI 2.0,
4x USB
1x DP 1.4,
2x HDMI 2.0,
4x USB
1x DP 1.4
2x HDMI 2.1
1x USB-C (65W PD)
4x USB
1x DP 1.4
2x HDMI 2.1
1x USB-C,
2x USB
1x Mini-DP 1.4,
1x micro HDMI 2.1
1x USB-C (65W PD)
1x USB-C
1x DP 1.4,
2x HDMI 2.0,
1x USB-C (90W PD),
4x USB
Cooling fans121NoneNone1
Ambient Light SensorNoYesYesNoYesYes
Updatable FirmwareYesYesYesYesYesYes
Other Notable FeaturesN/AG-SYNC moduleKVM switchKVM SwitchTizen OSKVM Switch
Ambiglow RGB
Price (MSRP)$1,100$1,300$1,100$900$1,500$800
Burn-in Warranty (in the US)3 years3 years3 years3 yearsN/AN/A
*Limited to ~450-nits unless VRR is disabled
**HDR Game Mode reaches ~1000-nits but over-brightens the image, while True Black Mode is limited to ~450-nits and some scenes are too dark

The pricing and warranty can vary by region. Generally, we recommend going with the Dell AW3423DWF due to its price and warranty that covers burn-in.

There are also 34″ 3440×1440 240Hz W-OLED gaming monitors available, such as the ASUS PG34WCDM and the LG 34GS95QE. While they offer a higher refresh rate, their W-OLED panel has more noticeable fringing issues, not as high color volume and gamut, a steep 800R screen curvature, and they’re more expensive.

We’re also expecting more 34″ and 39″ W-OLED models, as well as monitors using Samsung’s third-gen 34″ 3440×1440 240Hz QD-OLED panel in 2024. Check out our OLED monitors article for more information.

There’s also a 49″ 5120×1440 240Hz QD-OLED display available, the Samsung Odyssey OLED G9 for $1600.

Related:New Monitors In 2024: What To Expect

In terms of picture quality and performance, the AW3423DW makes almost every LED-backlit gaming monitor over $1,300 obsolete.

Of course, if you prefer larger screens, LG’s 48″ OLED and 42″ OLED displays are still worth considering. In case you want something in the standard widescreen form factor, we recommend the ASUS PG27AQDM 27″ 1440p 240Hz OLED monitor.

48 vs 42 vs 34 Oled Monitor Size

However, these OLED displays aren’t quite as bright and don’t have as wide color gamut, but be sure to check out our LG OLED42C2 and ASUS PG42UQ reviews for more information.

 100% White Window Max Brightness (SDR)100% White Window Max Brightness (HDR)10% White Window Max Brightness (HDR)1 - 3% White Window Max Brightness (HDR)
Samsung QD-OLED Panels250-nits250-nits500-nits1000-nits
ASUS PG34WCDM270-nits270-nits750-nits1200-nits
ASUS PG27AQDM250-nits160-nits850-nits900-nits
LG 27GR95QE200-nits130-nits650-nits650-nits
LG 45GR95QE160-nits160-nits650-nits800-nits
Corsair Xeneon Flex190-nits160-nits650-nits800-nits
LG OLED42C3180-nits130-nits700-nits700-nits
ASUS PG42UQ200-nits120-nits800-nits800-nits
LG OLED48C3200-nits150-nits800-nits800-nits
Gigabyte FO48U110-nits110-nits500-nits600-nits
LG 48GQ900130-nits130-nits600-nits600-nits

*PC Mode, Game Optimizer enabled
**Uniform Brightness enabled

Mini LED monitors will have to be a lot cheaper in other to compete with the AW3423DW, and indeed we’re already seeing some improvements there.

The Cooler Master GP27U is available for $800. It’s a 27″ 4K 160Hz 1ms IPS gaming monitor with a 576-zone mini LED FALD backlight, FreeSync and Adobe RGB color gamut.

There are also two 34″ 3440×1440 mini LED ultrawide monitors with 1152-zone mini LED FALD, but they’re too expensive and have too many issues. So, if you want a wider format, you should consider the 32:9 Samsung Neo G9 models – there are the 57″ 7680×2160 240Hz and the 49″ 5120×1440 240Hz variant.

Another HDR monitor worth considering is the Samsung Neo G7 with an 1196-zone mini LED FALD backlight. It goes for $1,100 – $1,300 but has a steep 1000R screen curvature that won’t appeal to all users. If you want a flat-screen IPS variant, check out the Innocn 32M2V and the Acer X32FP.


All in all, the Dell Alienware AW3423DW offers amazing image quality and performance for the price; you won’t be disappointed. However, you should definitely check out the newer AW3423DWF variant as well.


Screen Size34-inch
Screen Curvature1800R
Resolution3440×1440 (UWQHD)
Panel TypeQD-OLED
Aspect Ratio21:9 (UltraWide)
Refresh Rate175Hz
Response Time0.1ms (GtG)
Adaptive-SyncG-SYNC Ultimate (30-175Hz)
PortsDisplayPort 1.4, 2x HDMI 2.0
Other PortsHeadphone Jack, Line-Out,
4x USB 3.0
Brightness (1 – 3% White Window)1000 cd/m²
Brightness (10% White Window)450 ~ 550 cd/m²
Brightness (100% White Window)250 cd/m²
Contrast RatioInfinite
Colors1.07 billion (true 10-bit)
99.3% DCI-P3
HDRDisplayHDR 400 True Black
VESAYes (100x100mm)

The Pros:

  • Instantaneous response time, low input lag, G-SYNC up to 175Hz
  • Infinite contrast ratio, wide color gamut, high peak brightness
  • Plenty of useful features
  • Fully ergonomic design, USB hub
  • 3-year warranty that covers burn-in

The Cons:

  • Risk of burn-in
  • Text clarity issues due to the uncommon subpixel layout

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Rob Shafer

Rob is a software engineer with a Bachelor’s degree from the University of Denver. He now works full-time managing DisplayNinja while coding his own projects on the side.