LG 27GM950B-B vs ASUS ROG Strix 5K XG27JCG: Which Monitor Is Better?

Tested using Methodology v2.1.2

Updated Jun 22, 2026 07:44 PM

This review is in Early access

See ASUS ROG Strix 5K XG27JCG Review

Size 27"

Panel Type LCD

Native Resolution 5120 x 2880

Max Refresh Rate 330 Hz

Sub-Type IPS

Size 27"

Panel Type LCD

Native Resolution 5120 x 2880

Max Refresh Rate 330 Hz

Sub-Type IPS

Our Verdict

ASUS ROG Strix 5K XG27JCG

LG 27GM950B-B

Full comparison details regarding individual product score sets can be found in the section below

Variants

ROG Strix 5K XG27JCG (27")

27GM950B-B (27")

Review

See LG 27GM950B-B Review

Check Price

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

LG.com

27"

ROG Strix 5K XG27JCG

ASUS

27"

27GM950B-B

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

Main Differences for

PC Gaming

Threshold

0.10

PC Gaming

0.0

JOIN NOW to see main differences

Full Comparison

PC Gaming

0.0

Console Gaming

0.0

Office

0.0

Editing

0.0

Brightness

0.0

Response Time

0.0

HDR Picture

0.0

SDR Picture

0.0

Color Accuracy

0.0

Design

Style

Design Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Curved

Locked

Curve Radius

Locked

Build Quality

N/A

Build Quality Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Ergonomics

N/A

Ergonomics Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Back Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Height Adjustment

Lock" (Lock cm)

Min Height To Top Of Panel

Lock" (Lock cm)

Tilt Range

Locked

Rotate Portrait/Landscape

Locked

Swivel Range

Locked

Wall Mount

Locked

Stand

Stand Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Thickness Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Base Width

Lock" (Lock cm)

Base Depth

Lock" (Lock cm)

Thickness (With Display)

Lock" (Lock cm)

Weight (With Display)

Lock lbs (Lock kg)

Display

Display Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Size

Lock"

Housing Width

Lock" (Lock cm)

Housing Height

Lock" (Lock cm)

Thickness (Without Stand)

Lock" (Lock cm)

Weight (Without Stand)

Lock lbs (Lock kg)

Borders Size (Bezels)

Lock" (Lock cm)

Controls

Controls Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

In The Box

In The Box Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Power Supply

Locked

Picture Quality

Contrast

N/A

Checkerboard Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Native Contrast

Lock : 1

Contrast With Local Dimming

Lock : 1

Local Dimming

N/A

Local Dimming Video

SAMPLE

for videos & test results

SAMPLE

for videos & test results

Local Dimming

Locked

Backlight

Locked

SDR Brightness

N/A

Real Scene

Lock cd/m²

Peak 2% Window

Lock cd/m²

Peak 10% Window

Lock cd/m²

Peak 25% Window

Lock cd/m²

Peak 50% Window

Lock cd/m²

Peak 100% Window

Lock cd/m²

Sustained 2% Window

Lock cd/m²

Sustained 10% Window

Lock cd/m²

Sustained 25% Window

Lock cd/m²

Sustained 50% Window

Lock cd/m²

Sustained 100% Window

Lock cd/m²

Automatic Brightness Limiting (ABL)

Lock

Minimum Brightness

Lock cd/m²

HDR Brightness

N/A

EOTF

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

VESA DisplayHDR Certification

Locked

Real Scene

Lock cd/m²

Peak 2% Window

Lock cd/m²

Peak 10% Window

Lock cd/m²

Peak 25% Window

Lock cd/m²

Peak 50% Window

Lock cd/m²

Peak 100% Window

Lock cd/m²

Sustained 2% Window

Lock cd/m²

Sustained 10% Window

Lock cd/m²

Sustained 25% Window

Lock cd/m²

Sustained 50% Window

Lock cd/m²

Sustained 100% Window

Lock cd/m²

Automatic Brightness Limiting (ABL)

Lock

Gray Uniformity

N/A

50% Uniformity Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

50% Std. Dev.

Lock%

50% DSE

Lock%

Black Uniformity

N/A

Native Black Uniformity Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Native Std. Dev.

Lock%

Black Uniformity Picture With Local Dimming

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Std. Dev. w/ L.D.

Lock%

Color Accuracy (Pre-Calibration)

N/A

Pre Calibration Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Pre Gamma Curve Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Pre Color Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Picture Mode

Locked

sRGB Gamut Area xy

Lock%

White Balance dE (Avg.)

Lock

Color Temperature (Avg.)

Lock K

Gamma (Avg.)

Lock

Color dE (Avg.)

Lock

Contrast Setting

Lock

RGB Settings

Locked

Gamma Setting

Locked

Brightness Setting

Lock

Measured Brightness

Lock cd/m²

Brightness Locked

Locked

Color Accuracy (Post-Calibration)

N/A

Post Calibration Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Post Gamma Curve Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Post Color Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Picture Mode

Locked

sRGB Gamut Area xy

Lock%

White Balance dE (Avg.)

Lock

Color Temperature (Avg.)

Lock K

Gamma (Avg.)

Lock

Color dE (Avg.)

Lock

Contrast Setting

Lock

RGB Settings

Locked

Gamma Setting

Locked

Brightness Setting

Lock

Measured Brightness

Lock cd/m²

ICC Profile

Download

SDR Color Gamut

N/A

sRGB Color Gamut Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

sRGB Coverage xy

Lock%

sRGB Picture Mode

Locked

Adobe RGB Color Gamut Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Adobe RGB Coverage xy

Lock%

Adobe RGB Picture Mode

Locked

HDR Color Gamut

N/A

Wide Color Gamut

Locked

DCI-P3 Color Gamut Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

DCI-P3 Coverage xy

Lock%

DCI-P3 Picture Mode

Locked

Rec. 2020 Color Gamut Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Rec. 2020 Coverage xy

Lock%

Rec. 2020 Picture Mode

Locked

HDR Color Volume

N/A

DCI-P3 Color Volume ITP Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

1,000 cd/m² DCI-P3 Coverage ICtCp

Lock%

DCI-P3 Picture Mode

Locked

Rec. 2020 Color Volume ITP Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

10,000 cd/m² Rec. 2020 Coverage ICtCp

Lock%

Rec. 2020 Picture Mode

Locked

Viewing Angle

N/A

Viewing Angle Video

SAMPLE

for videos & test results

SAMPLE

for videos & test results

Chroma Graph

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Color Washout From Left

Lock°

Color Washout From Right

Lock°

Hue Graph

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Color Shift From Left

Lock°

Color Shift From Right

Lock°

Lightness Graph

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Brightness Loss From Left

Lock°

Brightness Loss From Right

Lock°

Black Level Raise From Left

Lock°

Black Level Raise From Right

Lock°

Gamma Shift From Left

Lock°

Gamma Shift From Right

Lock°

Text Clarity

N/A

ClearType On

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

ClearType Off

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Panel Technology

Spectral Power Distribution

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Pixels

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Panel Type

Locked

Sub-Type

Locked

Subpixel Layout

Locked

Direct Reflections

N/A

Ring Light Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Direct Reflections Graph

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Peak Direct Reflection Intensity

Lock%

Screen Finish

Locked

Ambient Black Level Raise

N/A

Black Level Raise Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Ambient Black Level Raise Graph

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Black Luminance @ 0 lx

Lock cd/m²

Black Luminance @ 1000 lx

Lock cd/m²

Total Reflected Light

N/A

Bright Room Off Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Total Reflection Ring Light Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Total Reflected Light Intensity

Lock% ⋅ pixel

Diffraction Artifacts

Locked

Gradient

N/A

Gradient Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Color Depth

Lock Bit

Motion

Refresh Rate

N/A

Dual Mode Setting

Locked

Native Refresh Rate

Lock Hz

Max Refresh Rate

Lock Hz

Max Refresh Rate Over DP

Lock Hz

Max Refresh Rate Over HDMI

Lock Hz

Max Refresh Rate Over DP @ 10-bit

Lock Hz

Max Refresh Rate Over HDMI @ 10-Bit

Lock Hz

DSC Toggle

Locked

DSC Off Max Refresh Rate Over DP

Lock Hz

N/A

DSC Off Max Refresh Rate Over HDMI

Lock Hz

N/A

Variable Refresh Rate (VRR)

Variable Refresh Rate

Locked

FreeSync

Locked

G-SYNC

Locked

VRR Maximum

Lock Hz

VRR Minimum

Locked

VRR Supported Connectors

Locked

VRR Motion Performance

N/A

Pursuit Photo VRR

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

OD Mode CAD Comparison

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Recommended VRR OD Setting

Locked

Variable Overdrive Advertised

Locked

Avg. CAD

Lock

Best CAD

Lock

Worst CAD

Lock

Refresh Rate Compliance

N/A

Fast GTG Sequence

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

VRR Compliance

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Compliance @ Max Hz

Lock%

Compliance @ 120 FPS

Lock%

Compliance @ 60 FPS

Lock%

CAD @ Max Refresh Rate

N/A

Pursuit Photo At Max Refresh

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

CAD Heatmap At Max Refresh

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

OD Transition Max Refresh Rate

Join nowfor multiple image controls

Recommended Overdrive Setting

Locked

Avg. CAD

Lock

Best 10% CAD

Lock

Worst 10% CAD

Lock

Response Time @ Max Refresh Rate

First Response Time

Lock ms

Total Response Time

Lock ms

Recommended Overdrive Setting

Locked

RGB Overshoot

Lock RGB

Worst 10% RGB Overshoot

Lock RGB

Worst 10% First Response Time

Lock ms

Worst 10% Total Response Time

Lock ms

Heatmap First Response

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Heatmap Total Response

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Heatmap RGB Overshoot

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

CAD @ 120Hz

N/A

Pursuit Photo 120Hz

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

CAD Heatmap 120Hz

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

OD Transition 120Hz

Join nowfor multiple image controls

Recommended Overdrive Setting

Locked

Avg. CAD

Lock

Best 10% CAD

Lock

Worst 10% CAD

Lock

Response Time @ 120Hz

Worst 10% First Response Time

Lock ms

RGB Overshoot

Lock RGB

Total Response Time

Lock ms

First Response Time

Lock ms

Recommended Overdrive Setting

Locked

Worst 10% Total Response Time

Lock ms

Worst 10% RGB Overshoot

Lock RGB

120Hz First Response Heatmap

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

120Hz Total Response Heatmap

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

120Hz Heatmap RGB Overshoot

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

CAD @ 60Hz

N/A

Pursuit Photo 60Hz

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

CAD Heatmap 60Hz

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

OD Transition 60Hz

Join nowfor multiple image controls

Recommended Overdrive Setting

Locked

Avg. CAD

Lock

Best 10% CAD

Lock

Worst 10% CAD

Lock

Response Time @ 60Hz

Recommended Overdrive Setting

Locked

First Response Time

Lock ms

Total Response Time

Lock ms

RGB Overshoot

Lock RGB

Worst 10% Total Response Time

Lock ms

Worst 10% First Response Time

Lock ms

Worst 10% RGB Overshoot

Lock RGB

60Hz First Response Heatmap

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

60Hz Total Response Heatmap

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

60Hz RGB Overshoot Heatmap

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Backlight Strobing (BFI)

Backlight Strobing Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Backlight Strobing Frequency Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Backlight Strobing (BFI)

Locked

Maximum Frequency

Lock Hz

Minimum Frequency

Lock Hz

Longest Pulse Width Brightness

Lock cd/m²

Shortest Pulse Width Brightness

Lock cd/m²

Pulse Width Control

Locked

Pulse Phase Control

Locked

Pulse Amplitude Control

Locked

VRR At The Same Time

Locked

VRR Flicker

N/A

VRR Flicker Video

SAMPLE

for videos & test results

SAMPLE

for videos & test results

VRR Flicker Graph

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Dark Gray Flicker

Lock RGB

Middle Gray Flicker

Lock RGB

Light Gray Flicker

Lock RGB

VRR Flicker Control Setting

Locked

Image Flicker

N/A

Backlight Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Flicker-Free

Locked

PWM Dimming Frequency

Locked

Inputs

Input Lag

N/A

Native Resolution @ Max Hz

Lock ms

Native Resolution @ 120Hz

Lock ms

Native Resolution @ 60Hz

Lock ms

Backlight Strobing (BFI)

Lock ms

Resolution

N/A

Native Resolution

Locked

Aspect Ratio

Locked

Megapixels

Lock MP

Pixel Density

Lock PPI

PS5 Compatibility

N/A

PS5 Compatibility Photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

PS5 Compatibility Table

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

4k @ 120Hz

Locked

4k @ 60Hz

Locked

1440p @ 120Hz

Locked

1440p @ 60Hz

Locked

1080p @ 120Hz

Locked

1080p @ 60Hz

Locked

Xbox Series X|S Compatibility

N/A

XSX Compatibility Photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

XSX Compatibility Table

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

4k @ 120Hz

Locked

4k @ 60Hz

Locked

1440p @ 120Hz

Locked

1440p @ 60Hz

Locked

1080p @ 120Hz

Locked

1080p @ 60Hz

Locked

Inputs

Inputs 1

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Inputs 2

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

DisplayPort

Locked

DisplayPort Transmission Bandwidth

Locked

Mini DisplayPort

Locked

HDMI

Locked

HDMI 2.1 Bandwidth

Locked

Daisy Chaining

Locked

3.5mm Audio Out

Locked

Ethernet

Locked

HDR10

Locked

Dolby Vision

Locked

USB

USB-A Ports

Locked

USB-A Rated Speed

Locked

USB-B Upstream Port

Locked

USB-C Ports

Locked

USB-C Upstream

Locked

USB-C Rated Speed

Locked

USB-C Power Delivery

Locked

USB-C DisplayPort Alt Mode

Locked

Thunderbolt

Locked

macOS Compatibility

macOS Screenshot

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Features

Additional Features

Speakers

Locked

RGB Illumination

Locked

Multiple Input Display

Locked

KVM Switch

Locked

Smart OS

Locked

On-Screen Display (OSD)

OSD Picture

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Check Price

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

LG.com

27"

ROG Strix 5K XG27JCG

ASUS

27"

27GM950B-B

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B

27"

ROG Strix 5K XG27JCG

27"

27GM950B-B