LG UltraGear 27GP850-B vs AOC Q27G4X

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

The LG UltraGear 27GP850-B and AOC Q27G4X are closely matched at 53 and 52/100. The LG UltraGear 27GP850-B edges ahead on Image Quality, while the AOC Q27G4X leads on value — pick the one whose strengths match what you'll actually use.

Verdict

Our overall take, at a glance

LG UltraGear 27GP850-B and AOC Q27G4X are closely matched

LG UltraGear 27GP850-B

AOC Q27G4X

Where LG UltraGear 27GP850-B stands out

Panel Type: Nano IPS
Image Quality Brightness (typical): 400 nits (14% more)
Image Quality Color Gamut (DCI-P3): 98 (5% more)

Where AOC Q27G4X stands out

Performance Refresh Rate: 180 Hz (9% more)

Watch-outs

Compromises to know before you buy

LG UltraGear 27GP850-B

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

AOC Q27G4X

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

Winner by category for LG UltraGear 27GP850-B vs AOC Q27G4X
Category	LG UltraGear 27GP850-B	AOC Q27G4X	Winner
Panel	54	53	Tie
Image Quality	53	47	LG UltraGear 27GP850-B
Performance	49	51	Tie
HDR	50	50	Tie
Connectivity	38	38	Tie
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.

LG UltraGear 27GP850-B

The LG UltraGear 27GP850-B is a 27-inch gaming monitor designed for players seeking smooth performance and accurate visuals. It features a fast panel capable of reaching a 180Hz refresh rate alongside support for both NVIDIA G-Sync and AMD FreeSync adaptive sync technologies. This model targets PC gamers and esports enthusiasts who prioritize fast motion response and vibrant image presentation.

Best for Fast-paced competitive PC gaming where high frame rates are criticalBest for Users looking for a high-refresh-rate 27-inch display with accurate color repres

Pros

High refresh rate up to 180Hz for fluid gameplay
Support for both G-Sync and FreeSync adaptive sync technologies
Vibrant color coverage and solid peak brightness performance
Fast response times with minimal visible ghosting

Cons

IPS panel architecture offers limited contrast compared to VA or OLED alternatives
Lacks built-in speakers

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

Value for Money

Which is the better deal for the price

Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.

LG UltraGear 27GP850-B

Check Price on Amazon

AOC Q27G4X

Check Price on Amazon

Physical Comparison

Weigh them up, then compare real dimensions in 3D

LG UltraGear 27GP850-BAOC Q27G4X

LG UltraGear 27GP850-B is 0.78 kg (23%) heavier than AOC Q27G4X.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Panel

Feature	LG UltraGear 27GP850-B	AOC Q27G4X
Screen Size	27 in	27 in
Resolution	2560 × 1440 px	2560 × 1440 px
Panel Type
Aspect Ratio	16:9	16:9
Pixel Density	109	109
Curved	No	No
Screen-to-body ratio	90%	89%

Image Quality

Feature	LG UltraGear 27GP850-B	AOC Q27G4X
Brightness (typical)	400 nits14% more	350 nits
Contrast Ratio	1000:1	1000:1
Color Gamut (DCI-P3)	985% more	93
Color Depth	10-bit	N/A

Performance

Feature	LG UltraGear 27GP850-B	AOC Q27G4X
Refresh Rate	165 Hz	180 Hz9% more
Response Time (GtG)	1 ms	1 ms
Adaptive Sync	G-Sync Compatible / FreeSync Premium	Adaptive-Sync / G-Sync Compatible

HDR

Feature	LG UltraGear 27GP850-B	AOC Q27G4X
HDR Format	HDR400	HDR10, DisplayHDR 400
Peak Brightness (HDR)	400 nits	400 nits

Connectivity

Feature	LG UltraGear 27GP850-B	AOC Q27G4X
HDMI Ports	2	2
DisplayPort	1	1
USB-C	No	No
USB Hub	Yes	No

Ergonomics

Feature	LG UltraGear 27GP850-B	AOC Q27G4X
Height Adjustment	Yes	Yes
VESA Mount	100 × 100 px	100 × 100 px
Built-in Speakers	No	N/A
Dimensions (without stand)	61.42 × 36.48 × 5.17 cm	61.39 × 36.63 × 5.13 cm
Weight (without stand)	4.2 kg	3.42 kg
Release Date	May 4, 2021	February 8, 2024

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 LG UltraGear 27GP850-B vs AOC Q27G4X comparison

They are closely matched: LG UltraGear 27GP850-B scores 56/100 and AOC Q27G4X scores 55/100 in our overall comparison — within 1 point. Neither is a clear winner overall, so the decision comes down to the specific features and price that matter most to you.

LG UltraGear 27GP850-B and AOC Q27G4X 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 56/100 for LG UltraGear 27GP850-B and 55/100 for AOC Q27G4X.

It's close — LG UltraGear 27GP850-B (56/100) and AOC Q27G4X (55/100) 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.