LG UltraGear 45GX950A-B vs Acer Predator XB273U

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 74/100 to the Acer Predator XB273U's 44, leading on Panel and Performance. Choose the Acer Predator XB273U instead if you want to spend less.

Verdict

Our overall take, at a glance

LG UltraGear 45GX950A-B leads overall

LG UltraGear 45GX950A-B

Acer Predator XB273U

Why it stands out

Performance Refresh Rate: 330 Hz (100% more)
Performance Response Time (GtG): 0.03 ms (97% less)
Panel Screen Size: 44.5 in (65% more)

Watch-outs

Compromises to know before you buy

LG UltraGear 45GX950A-B

No notable compromises found.

Acer Predator XB273U

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

Winner by category for LG UltraGear 45GX950A-B vs Acer Predator XB273U
Category	LG UltraGear 45GX950A-B	Acer Predator XB273U	Winner
Panel	71	51	LG UltraGear 45GX950A-B
Image Quality	49	51	Tie
Performance	82	18	LG UltraGear 45GX950A-B
HDR	100	0	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

Acer Predator XB273U

The Acer Predator XB273U GX is a high-performance gaming monitor designed for competitive players and hardware enthusiasts. It features a sharp 1440p resolution paired with a very fast 240Hz refresh rate, aiming to deliver a balance of visual detail and fluid motion. This display is built for users with powerful graphics cards who want to maximize their frame rates in fast-paced titles.

Best for Competitive multiplayer gaming where ultra-smooth 240Hz performance is requiredBest for Players seeking a balance between crisp 1440p resolution and high-frame-rate…

Pros

High 240Hz refresh rate delivers fluid motion transitions for fast-paced gameplay
1440p resolution offers a sharper image and more detail than standard 1080p screens

Cons

Requires careful tuning of overdrive and response time settings to minimize motion artifacts

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

Check Price on Amazon

Acer Predator XB273U

Check Price on Amazon

Physical Comparison

Weigh them up, then compare real dimensions in 3D

LG UltraGear 45GX950A-B

9.4kg

Weight

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Panel

Feature	LG UltraGear 45GX950A-B	Acer Predator XB273U
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	Acer Predator XB273U
Brightness (typical)	275 nits	350 nits27% more
Contrast Ratio	1500000:1	1000:1
Color Gamut (DCI-P3)	983% more	95
Color Depth	10-bit	N/A

Performance

Feature	LG UltraGear 45GX950A-B	Acer Predator XB273U
Refresh Rate	330 Hz100% more	165 Hz
Response Time (GtG)	0.03 ms97% less	1 ms
Adaptive Sync	FreeSync Premium Pro / G-Sync Compatible	G-Sync

HDR

Feature	LG UltraGear 45GX950A-B	Acer Predator XB273U
HDR Format	HDR10, DisplayHDR True Black 400	N/A
Peak Brightness (HDR)	1,300 nits	N/A

Connectivity

Feature	LG UltraGear 45GX950A-B	Acer Predator XB273U
HDMI Ports	2	2
DisplayPort	1	1
USB-C	Yes	No
Power Delivery	90 W	N/A
USB Hub	Yes	Yes

Ergonomics

Feature	LG UltraGear 45GX950A-B	Acer Predator XB273U
Height Adjustment	Yes	Yes
VESA Mount	100 × 100 px	100 × 100 px
Built-in Speakers	Yes	Yes
Dimensions (without stand)	99.16 × 46.07 × 22.55 cm	61.4 × 36.7 × 6.6 cm
Weight (without stand)	9.4 kg	N/A
Release Date	April 1, 2025	August 1, 2019

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 Acer Predator XB273U comparison

Based on our overall comparison score, LG UltraGear 45GX950A-B rates higher at 82/100 versus 61/100 for Acer Predator XB273U — a 21-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 Acer Predator XB273U 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 61/100 for Acer Predator XB273U.

If you want the higher-rated monitors option overall, LG UltraGear 45GX950A-B (82/100) edges out Acer Predator XB273U (61/100). But if Acer Predator XB273U 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.