LG UltraGear 45GX950A-B vs LG UltraGear 39GX950B

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

For most buyers the LG UltraGear 39GX950B is the better pick — it scores 66/100 to the LG UltraGear 45GX950A-B's 49, leading on Panel and Image Quality. Choose the LG UltraGear 45GX950A-B instead if performance matters most to you, where it comes out ahead.

Verdict

Our overall take, at a glance

LG UltraGear 39GX950B leads overall

LG UltraGear 39GX950B

LG UltraGear 45GX950A-B

Why it stands out

Panel Pixel Density: 143 (14% more)
Image Quality Brightness (typical): 335 nits (22% more)
Image Quality Color Gamut (DCI-P3): 99 (1% more)

Winner by category for LG UltraGear 45GX950A-B vs LG UltraGear 39GX950B
Category	LG UltraGear 39GX950B	LG UltraGear 45GX950A-B	Winner
Panel	65	61	LG UltraGear 39GX950B
Image Quality	86	14	LG UltraGear 39GX950B
Performance	37	63	LG UltraGear 45GX950A-B
HDR	86	14	LG UltraGear 39GX950B
Connectivity	59	59	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 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

LG UltraGear 39GX950B

The LG UltraGear 39GX950B is a 39-inch curved OLED monitor designed for gamers and power users wanting an expansive, high-resolution canvas. It features a 5120 x 2160 resolution on an ultrawide 21:9 panel, coupled with a tight 1500R curvature for wrap-around immersion. The display delivers an ultra-fast 165Hz refresh rate alongside modern connectivity, including a 90W USB-C power delivery port.

Best for Ultrawide PC gaming demanding high refresh rates, low latency, and adaptive…Best for Single-cable workstation setups that require robust laptop charging alongside…

Pros

Extremely rapid 0.03ms response time that virtually eliminates ghosting and motion blur
High pixel density of 143 PPI offers sharp text and detailed graphics
Versatile USB-C port with 90W power delivery for clutter-free laptop integration
Excellent color performance with 99% DCI-P3 coverage and infinite OLED contrast ratios

Cons

Typical SDR brightness is capped at 335 nits, which may feel dim in highly illuminated spaces

Official

Official specificationsOfficial specifications detailing panel measurements, inputs, power delivery capacity, and refresh rates.

Video — reviews used (3)

Generated Sep 12, 2026

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 45GX950A-B

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LG UltraGear 39GX950B

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Physical Comparison

Weigh them up, then compare real dimensions in 3D

LG UltraGear 45GX950A-BLG UltraGear 39GX950B

LG UltraGear 45GX950A-B is 2.6 kg (38%) heavier than LG UltraGear 39GX950B.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Panel

Feature	LG UltraGear 45GX950A-B	LG UltraGear 39GX950B
Screen Size	44.5 in14% more	39 in
Resolution	5120 × 2160 px	5120 × 2160 px
Panel Type
Aspect Ratio	21:9	21:9
Pixel Density	125	14314% more
Curved	Yes	Yes
Curvature radius	800 mm	1,500 mm
Screen-to-body ratio	100%	94%

Image Quality

Feature	LG UltraGear 45GX950A-B	LG UltraGear 39GX950B
Brightness (typical)	275 nits	335 nits22% more
Contrast Ratio	1500000:1	1850000:1
Color Gamut (DCI-P3)	98	99
Color Depth	10-bit	10-bit

Performance

Feature	LG UltraGear 45GX950A-B	LG UltraGear 39GX950B
Refresh Rate	330 Hz100% more	165 Hz
Response Time (GtG)	0.03 ms	0.03 ms
Adaptive Sync	FreeSync Premium Pro / G-Sync Compatible	AMD FreeSync Premium Pro, NVIDIA G-Sync Compatible, VESA AdaptiveSync

HDR

Feature	LG UltraGear 45GX950A-B	LG UltraGear 39GX950B
HDR Format	HDR10, DisplayHDR True Black 400	VESA DisplayHDR True Black 500
Peak Brightness (HDR)	1,300 nits	1,500 nits15% more

Connectivity

Feature	LG UltraGear 45GX950A-B	LG UltraGear 39GX950B
HDMI Ports	2	2
DisplayPort	1	1
USB-C	Yes	Yes
Power Delivery	90 W	90 W
USB Hub	Yes	Yes

Ergonomics

Feature	LG UltraGear 45GX950A-B	LG UltraGear 39GX950B
Height Adjustment	Yes	Yes
VESA Mount	100 × 100 px	100 × 100 mm
Built-in Speakers	Yes	Yes
Dimensions (without stand)	99.16 × 46.07 × 22.55 cm	92.14 × 40.5 × 11.87 cm
Weight (without stand)	9.4 kg	6.8 kg
Release Date	April 1, 2025	April 1, 2026

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 LG UltraGear 39GX950B comparison

They are closely matched: LG UltraGear 45GX950A-B scores 79/100 and LG UltraGear 39GX950B scores 78/100 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 45GX950A-B and LG UltraGear 39GX950B 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 79/100 for LG UltraGear 45GX950A-B and 78/100 for LG UltraGear 39GX950B.

It's close — LG UltraGear 45GX950A-B (79/100) and LG UltraGear 39GX950B (78/100) 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.