LG UltraGear 45GX950A-B vs AOC Q27G4X

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

For most buyers the LG UltraGear 45GX950A-B is the better pick — it scores 72/100 to the AOC Q27G4X's 41, leading on Panel and Performance. Choose the AOC Q27G4X instead if you want to spend less.

Verdict

Our overall take, at a glance

LG UltraGear 45GX950A-B leads overall

LG UltraGear 45GX950A-B

AOC Q27G4X

Why it stands out

Peak Brightness (HDR): 1,300 nits (225% more)
Performance Response Time (GtG): 0.03 ms (97% less)
Performance Refresh Rate: 330 Hz (83% more)

Watch-outs

Compromises to know before you buy

LG UltraGear 45GX950A-B

No notable compromises found.

AOC Q27G4X

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

Winner by category for LG UltraGear 45GX950A-B vs AOC Q27G4X
Category	LG UltraGear 45GX950A-B	AOC Q27G4X	Winner
Panel	71	51	LG UltraGear 45GX950A-B
Image Quality	50	50	Tie
Performance	81	19	LG UltraGear 45GX950A-B
HDR	86	14	LG UltraGear 45GX950A-B
Connectivity	74	35	LG UltraGear 45GX950A-B
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 45GX950A-B

The LG UltraGear 45GX950A-B is a 45-inch OLED gaming monitor built to provide expansive, high-contrast visuals for desktop gaming setups. Part of LG's UltraGear lineup, it targets enthusiast PC gamers looking for deep black levels and an immersive widescreen experience.

Best for Immersive widescreen desktop PC gamingBest for High-contrast viewing in dark or dim gaming environments

Pros

Large 45-inch display area delivers strong visual immersion for gaming
OLED display technology provides deep blacks and high image contrast

Cons

Substantial physical footprint demands a large, dedicated desk space

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

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LG UltraGear 45GX950A-B

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AOC Q27G4X

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Physical Comparison

Weigh them up, then compare real dimensions in 3D

LG UltraGear 45GX950A-BAOC Q27G4X

LG UltraGear 45GX950A-B is 5.98 kg (175%) heavier than AOC Q27G4X.

Detailed Specifications

The full spec sheet, side by side

Panel

Feature	LG UltraGear 45GX950A-B	AOC Q27G4X
Screen Size	44.5 in65% more	27 in
Resolution	5120 × 2160 px	2560 × 1440 px
Panel Type
Aspect Ratio	21:9	16:9
Pixel Density	12515% more	109
Curved	Yes	No
Curvature radius	800 mm	N/A
Screen-to-body ratio	100%	89%

Image Quality

Feature	LG UltraGear 45GX950A-B	AOC Q27G4X
Brightness (typical)	275 nits	350 nits27% more
Contrast Ratio	1500000:1	1000:1
Color Gamut (DCI-P3)	985% more	93
Color Depth	10-bit	N/A

Performance

Feature	LG UltraGear 45GX950A-B	AOC Q27G4X
Refresh Rate	330 Hz83% more	180 Hz
Response Time (GtG)	0.03 ms97% less	1 ms
Adaptive Sync	FreeSync Premium Pro / G-Sync Compatible	Adaptive-Sync / G-Sync Compatible

HDR

Feature	LG UltraGear 45GX950A-B	AOC Q27G4X
HDR Format	HDR10, DisplayHDR True Black 400	HDR10, DisplayHDR 400
Peak Brightness (HDR)	1,300 nits225% more	400 nits

Connectivity

Feature	LG UltraGear 45GX950A-B	AOC Q27G4X
HDMI Ports	2	2
DisplayPort	1	1
USB-C	Yes	No
Power Delivery	90 W	N/A
USB Hub	Yes	No

Ergonomics

Feature	LG UltraGear 45GX950A-B	AOC Q27G4X
Height Adjustment	Yes	Yes
VESA Mount	100 × 100 px	100 × 100 px
Built-in Speakers	Yes	N/A
Dimensions (without stand)	99.16 × 46.07 × 22.55 cm	61.39 × 36.63 × 5.13 cm
Weight (without stand)	9.4 kg	3.42 kg
Release Date	April 1, 2025	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 45GX950A-B vs AOC Q27G4X comparison

Based on our overall comparison score, LG UltraGear 45GX950A-B rates higher at 82/100 versus 55/100 for AOC Q27G4X — a 27-point lead. LG UltraGear 45GX950A-B is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.

LG UltraGear 45GX950A-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 82/100 for LG UltraGear 45GX950A-B and 55/100 for AOC Q27G4X.

If you want the higher-rated monitors option overall, LG UltraGear 45GX950A-B (82/100) edges out AOC Q27G4X (55/100). But if AOC Q27G4X is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.