AOC Q27G4X vs Dell UltraSharp U4025QW

Updated Nov 2026 · Scored by the Let’s Compare Data Engine · How we score

The AOC Q27G4X and Dell UltraSharp U4025QW are closely matched at 56 and 55/100. The AOC Q27G4X edges ahead on Performance, while the Dell UltraSharp U4025QW leads on Panel and Image Quality — pick the one whose strengths match what you'll actually use.

Verdict

Our overall take, at a glance

AOC Q27G4X and Dell UltraSharp U4025QW are closely matched

AOC Q27G4X

Dell UltraSharp U4025QW

Where AOC Q27G4X stands out

Connectivity HDMI Ports: 2 (100% more)
Performance Response Time (GtG): 1 ms (80% less)
Performance Refresh Rate: 180 Hz (50% more)

Where Dell UltraSharp U4025QW stands out

Panel Resolution: 5120 × 2160 px
Panel Type: IPS Black
Peak Brightness (HDR): 600 nits (50% more)

Watch-outs

Compromises to know before you buy

AOC Q27G4X

No USB-C — no single-cable laptop connection.

Dell UltraSharp U4025QW

No notable compromises found.

Winner by category for AOC Q27G4X vs Dell UltraSharp U4025QW
Category	AOC Q27G4X	Dell UltraSharp U4025QW	Winner
Panel	44	63	Dell UltraSharp U4025QW
Image Quality	46	54	Dell UltraSharp U4025QW
Performance	79	21	AOC Q27G4X
HDR	33	67	Dell UltraSharp U4025QW
Connectivity	44	67	Dell UltraSharp U4025QW
Ergonomics	85	85	Tie

In-depth analysisAI

AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Nov 2026.

AOC Q27G4X

The AOC Q27G4X is a 27-inch QHD (2560x1440) gaming monitor built around a Fast IPS panel tailored for fluid gameplay. It combines a 180Hz maximum refresh rate, a 1ms GtG response time, and VESA DisplayHDR 400 capability. Designed primarily for PC gamers, it includes an esports-oriented ergonomic stand and support for both Adaptive Sync and NVIDIA G-Sync compatibility.

Best for Competitive 1440p PC gaming over DisplayPort connectionsBest for Desktops where a fully customizable, ergonomic stand is required

Pros

High 180Hz refresh rate over DisplayPort and fast 1ms GtG pixel response
Solid color performance covering 93.5% of the DCI-P3 spectrum
Versatile stand with 130mm height adjustment, tilt, swivel, and pivot capabilities
Support for Adaptive Sync and NVIDIA G-Sync compatibility to reduce screen tearing

Cons

HDMI connectivity is limited to HDMI 2.0, capping refresh rates at 144Hz on those ports
Does not include an integrated USB hub or built-in speakers

Dell UltraSharp U4025QW

The Dell UltraSharp U4025QW is a 39.7-inch curved ultrawide monitor designed for demanding creative and productivity workflows. Built around an IPS Black panel with a 5120 x 2160 resolution, it delivers a 21:9 aspect ratio, a 120Hz refresh rate, and extensive connectivity including 140W power delivery over USB-C.

Best for Multi-application professional multitaskingBest for Color-accurate photo and video editing workflows

Pros

High-resolution 5120 x 2160 ultrawide canvas provides ample workspace
IPS Black panel offers an improved 2000:1 contrast ratio
Smooth 120Hz refresh rate for fluid motion
Robust 140W power delivery via USB-C simplifies laptop connection

Cons

Large physical footprint requires significant desk space
Premium feature set commands a high price point

Value for Money

Which is the better deal for the price

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AOC Q27G4X

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Dell UltraSharp U4025QW

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Physical Comparison

Weigh them up, then compare real dimensions in 3D

AOC Q27G4XDell UltraSharp U4025QW

Dell UltraSharp U4025QW is 4.93 kg (144%) heavier than AOC Q27G4X.

Detailed Specifications

The full spec sheet, side by side

Panel

Feature	AOC Q27G4X	Dell UltraSharp U4025QW
Screen Size	27 in	39.7 in47% more
Resolution	2560 × 1440 px	5120 × 2160 px
Panel Type
Aspect Ratio	16:9	21:9
Pixel Density	109	14028% more
Curved	No	Yes
Curvature radius	N/A	2,500 mm
Screen-to-body ratio	89%	92%

Image Quality

Feature	AOC Q27G4X	Dell UltraSharp U4025QW
Brightness (typical)	350 nits	450 nits29% more
Contrast Ratio	1000:1	2000:1
Color Gamut (DCI-P3)	93	996% more
Color Depth	N/A	10-bit (8-bit + FRC)

Performance

Feature	AOC Q27G4X	Dell UltraSharp U4025QW
Refresh Rate	180 Hz50% more	120 Hz
Response Time (GtG)	1 ms80% less	5 ms
Adaptive Sync	Adaptive-Sync / G-Sync Compatible	HDMI 2.1 VRR

HDR

Feature	AOC Q27G4X	Dell UltraSharp U4025QW
HDR Format	HDR10, DisplayHDR 400	DisplayHDR 600
Peak Brightness (HDR)	400 nits	600 nits50% more

Connectivity

Feature	AOC Q27G4X	Dell UltraSharp U4025QW
HDMI Ports	2100% more	1
DisplayPort	1	1
USB-C	No	Yes
Power Delivery	N/A	140 W
USB Hub	No	Yes

Ergonomics

Feature	AOC Q27G4X	Dell UltraSharp U4025QW
Height Adjustment	Yes	Yes
VESA Mount	100 × 100 px	100 × 100 px
Built-in Speakers	N/A	Yes
Dimensions (without stand)	61.39 × 36.63 × 5.13 cm	94.66 × 41.91 × 10.80 cm
Weight (without stand)	3.42 kg	8.35 kg
Release Date	February 8, 2024	N/A

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about AOC Q27G4X vs Dell UltraSharp U4025QW comparison

They are closely matched: AOC Q27G4X scores 55/100 and Dell UltraSharp U4025QW scores 53/100 in our overall comparison — within 2 points. Neither is a clear winner overall, so the decision comes down to the specific features and price that matter most to you.

AOC Q27G4X and Dell UltraSharp U4025QW are compared side by side above across every spec in the monitors category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 55/100 for AOC Q27G4X and 53/100 for Dell UltraSharp U4025QW.

It's close — AOC Q27G4X (55/100) and Dell UltraSharp U4025QW (53/100) score almost the same. Pick based on price and the individual specs that matter most to you; the comparison above shows where each one pulls ahead.