LG UltraGear 27G810A-B 27" 4K 180Hz / FHD 360Hz Gaming Monitor

Product Overview

The LG UltraGear 27G810A-B is a high-end gaming monitor designed to deliver two completely different gaming experiences in one screen. With its dual-mode technology, you can switch between ultra-sharp 4K resolution at 180Hz and ultra-fast Full HD at 360Hz, depending on the type of game you play.

Built on a 27-inch IPS panel, it offers excellent color accuracy and wide viewing angles, making it suitable not only for gaming but also for content consumption and productivity. The addition of VESA DisplayHDR 400 and ~95% DCI-P3 color coverage enhances visuals with better contrast and vibrant colors.

This monitor is ideal for gamers who want both visual quality (4K) and competitive speed (360Hz) without switching monitors.

Key Strengths

• Dual Mode: 4K @ 180Hz or FHD @ 360Hz
• 1ms (GtG) response time for sharp motion
• IPS panel with wide color accuracy (~95% DCI-P3)
• DisplayHDR 400 for improved contrast
• G-Sync Compatible + FreeSync Premium
• HDMI 2.1 + DisplayPort 1.4 connectivity
• Fully adjustable stand (height, tilt, swivel, pivot)
  
  

Performance & Daily Use

This monitor is built for two types of gamers:

AAA / Story Games: Use 4K 180Hz for maximum visual quality

Competitive FPS / Esports: Switch to 1080p 360Hz for ultra-fast response

The 1ms response time ensures minimal motion blur, while adaptive sync eliminates tearing and stuttering during gameplay.

It also works well for productivity thanks to its sharp 4K resolution and IPS panel, though the main focus remains gaming performance.

Who Should Buy This Monitor

• Gamers who play both competitive FPS and AAA games
• Users wanting one monitor instead of dual setup
• PC gamers with high-end GPUs (RTX / RX)
• Console gamers (PS5 / Xbox Series X via HDMI 2.1)
• Users who want 4K + high refresh flexibility
  
  

NOT ideal for:

• Budget setups
• Users without powerful GPU (can’t fully utilize 4K/360Hz)
  
  

Frequently Asked Questions

• What is dual-mode on this monitor?
• It lets you switch between 4K at 180Hz and 1080p at 360Hz depending on your use.

• Is it good for competitive gaming?
• Yes, especially in 360Hz mode, which is ideal for FPS and esports.

• Does it support G-Sync and FreeSync?
• Yes, it supports both NVIDIA G-Sync Compatible and AMD FreeSync Premium.

• Can it be used for PS5 or Xbox?
• Yes, thanks to HDMI 2.1, it supports modern consoles.

• Does it have speakers?
• No, but it includes a 3.5mm jack with DTS Headphone:X support.
  
  

General

Model: LG UltraGear 27G810A-B

Screen Size: 27 inches (68.4 cm)

Aspect Ratio: 16:9

Panel Type: IPS (anti-glare)

Flat / Curved: Flat

Display

Native Resolution: 3840 × 2160 (4K UHD)

Alternative Resolution Mode: 1920 × 1080 (Full HD, dual-mode)

Pixel Pitch: 0.1554 mm

Brightness:

Typical: 400 nits

Minimum: 320 nits

Contrast Ratio:

Typical: 1000:1

Minimum: 700:1

Viewing Angles: 178° (H) / 178° (V)

Color Depth: 1.07 billion colors (10-bit, 8-bit + FRC)

Color Gamut:

Typical: 95% DCI-P3

Minimum: 90% DCI-P3

Refresh Rate & Performance

Refresh Rate (4K): up to 180 Hz

Refresh Rate (FHD dual-mode): up to 360 Hz

Response Time: 1 ms (GtG)

Variable Refresh Rate (VRR): Yes

NVIDIA G-SYNC: Compatible

AMD FreeSync: FreeSync Premium

HDR & Image Features

HDR Support: Yes

HDR Standard: VESA DisplayHDR 400

HDR10: Yes

Factory Color Calibration: Yes

Hardware Calibration: Supported (ready)

Flicker-Free: Yes

Low Blue Light / Reader Mode: Yes

Gaming Features

Dual Mode (4K 180Hz / FHD 360Hz switch)

Black Stabilizer

Dynamic Action Sync (low input lag)

Crosshair overlay

FPS counter (OSD feature)

Audio

Built-in Speakers: No

Headphone Out: Yes (3.5 mm)

DTS Headphone:X support via headphone jack

Connectivity

HDMI: 2 × HDMI 2.1

DisplayPort: 1 × DisplayPort 1.4 (with DSC)

USB:

1 × USB upstream

2–3 × USB-A downstream (varies by region listing)

HDCP: Supported

Ergonomics & Design

Height Adjustment: 130 mm

Tilt: -5° to +21°

Swivel: -30° to +30°

Pivot: Bi-directional (portrait support)

VESA Mount: 100 × 100 mm

Bezel: Slim / near-borderless

Physical

Dimensions (with stand): ~613.5 × 534.5 × 220 mm

Dimensions (without stand): ~613.5 × 371.6 × 51.3 mm

Weight (with stand): ~7.4 kg

Weight (without stand): ~4.9 kg

Power

Power Supply: External adapter

Input Voltage: 100–240V, 50/60 Hz

In the Box

Monitor

Stand

Power adapter & cable

HDMI cable

DisplayPort cable