Dell Alienware AW3425DWM 34" VS Dell Plus S3425DW 34"

Both monitors share the same fundamental panel DNA — a 34″ VA, LED-backlit LCD at 3440 x 1440 ultrawide resolution — and their pixel densities of 110 ppi and 109 ppi are effectively identical. Viewing angles, adaptive sync (AMD FreeSync), and surface treatment (glossy, anti-glare coating) are also matched, meaning neither panel has an inherent edge in color geometry or reflectivity management.

Where the two monitors meaningfully diverge is in motion performance. The Alienware AW3425DWM runs at 180Hz with a 4 ms response time, while the Dell Plus S3425DW tops out at 120Hz with a 5 ms response time. In practice, the 60Hz gap is perceptible: fast-paced gaming and rapid cursor movement will appear noticeably smoother on the Alienware. The 1 ms response time advantage also reduces the risk of ghosting on VA panel transitions, which is a known weakness of the technology at lower refresh rates.

For productivity-focused or casual users, the S3425DW′s 120Hz refresh rate is still a comfortable step above standard 60Hz displays and will feel fluid in everyday use. But for anyone prioritizing gaming fluency or high-frame-rate content, the Alienware AW3425DWM holds a clear display performance edge by every motion-related metric provided.

Classified as a Gaming ultrawide, the Alienware AW3425DWM signals its intended audience immediately — and that distinction carries into the stand design. It supports tilt adjustment, which the Dell Plus S3425DW (categorized as a Standard ultrawide) notably lacks. For a monitor at this size, the ability to angle the panel toward or away from the viewer is a meaningful ergonomic feature, particularly during long sessions where eye strain and neck fatigue become real concerns.

Physically, the two monitors occupy nearly the same desk footprint — width and height are within a few millimeters of each other — but the Alienware is 15.57 mm thicker (132.46 mm vs 116.89 mm), which accounts for its substantially larger volume despite the similar silhouette. Weight is essentially a wash at roughly 9.1 kg for both, so neither has an advantage when it comes to mounting or repositioning.

Both monitors support VESA mounting, giving users the option to ditch the stand entirely for an arm — at which point the S3425DW′s lack of tilt becomes irrelevant. But for stand-only setups, the Alienware AW3425DWM holds a practical ergonomic edge thanks to its tilt support, making it the more adaptable option out of the box.

On contrast ratio and color depth, these two monitors are perfectly matched — both deliver a 3000:1 contrast ratio and 1.07 billion colors, which means the depth of blacks, the richness of gradients, and the overall tonal range coming off the VA panel are identical. For color-sensitive work or immersive gaming visuals, neither has an inherent advantage at the panel level.

Brightness is where the gap opens. The Alienware AW3425DWM outputs 400 nits typical brightness versus the S3425DW′s 300 nits — a 33% difference that matters most in well-lit environments. A brighter panel holds up better against ambient light, preserving perceived contrast and color saturation without forcing the user to dim their surroundings. For the S3425DW in a bright office or near a window, image washout becomes a more realistic concern.

The more decisive differentiator, though, is color calibration support. The Alienware offers it; the S3425DW does not. For creative professionals or anyone who needs verified color accuracy — whether for photo editing, video work, or simply ensuring what they see matches what they produce — this is a significant functional gap. Combined with the brightness advantage, the Alienware AW3425DWM holds a clear edge in this group for any user where color fidelity and adaptability to varied lighting conditions matter.

The most consequential difference here is video input selection. The Alienware AW3425DWM offers one DisplayPort output alongside its two HDMI ports, while the Dell Plus S3425DW relies entirely on its two HDMI ports with no DisplayPort at all. This matters because DisplayPort is generally the preferred connection for high-refresh-rate gaming — capable of handling the bandwidth demands of ultrawide resolutions at elevated frame rates more reliably than HDMI in many configurations. Users pairing the S3425DW with a modern discrete GPU may find themselves limited by HDMI version bandwidth depending on the source device.

Flip the advantage, and the S3425DW pulls ahead on USB hub utility, offering 4 USB ports to the Alienware′s 3. For a desk setup where the monitor doubles as a central hub for peripherals — keyboard, mouse, headset dongle, storage — that extra port can eliminate the need for a separate hub entirely. It is a modest but practical win for the productivity-oriented user the S3425DW is designed for.

Neither monitor includes an audio jack, Ethernet, or wireless connectivity, so those omissions are a wash. On balance, the Alienware AW3425DWM holds the stronger connectivity profile for its target audience: the DisplayPort input is a meaningful advantage for PC gamers running high refresh rates, and one fewer USB port is an easy trade-off in that context.

Power consumption is essentially a non-issue in this comparison. The Alienware AW3425DWM draws 32W during operation and the Dell Plus S3425DW draws 31W — a 1W difference that is functionally imperceptible in any real-world context, whether measured in electricity costs or thermal output. Running either monitor for eight hours a day, the annual energy difference between the two amounts to less than a few cents.

Standby figures flip the result just as marginally: the Alienware idles at 0.3W versus the S3425DW′s 0.4W, a 0.1W gap that is similarly inconsequential over time. Neither number is cause for concern from an efficiency standpoint, and neither monitor distinguishes itself here.

This group is effectively a tie. Given that the Alienware offers higher brightness and a faster refresh rate — both of which typically drive up power draw — its near-identical consumption to the S3425DW is mildly noteworthy, but not a decisive factor in any purchasing decision.

Across most feature categories, these two monitors are identical — both support Picture-in-Picture, and neither includes smart TV functionality, a remote control, surround sound formats, an ambient light sensor, or a front camera. The shared PiP support is worth noting as a genuine productivity tool, allowing users to display input from two sources simultaneously on the ultrawide canvas, which is particularly useful in multi-device workflows.

The sole differentiator in this group is that the Dell Plus S3425DW includes stereo speakers, while the Alienware AW3425DWM does not. For a monitor aimed at productivity users, built-in speakers offer a convenient baseline audio solution — video calls, background music, or casual media playback without requiring a separate speaker setup. Gamers and audio enthusiasts on either monitor will almost certainly use dedicated headsets or external speakers, but the absence of any speakers on the Alienware means users have no fallback option at all if needed.

For this group, the S3425DW has a narrow but clear edge: built-in speakers add flexibility at no cost to the user, and no other feature in this category offsets that gap for the Alienware.