ASUS ROG Strix OLED XG27AQDMG vs LG 27GX790B-B: Which Monitor Is Better?

Tested using Methodology v2.1.1

Updated Feb 20, 2026 06:03 PM

This review is in Early access

See ASUS ROG Strix OLED XG27AQDMG Review

Max Refresh Rate 240 Hz

Size 27"

Panel Type OLED

Native Resolution 2560 x 1440

Max Refresh Rate Lock Hz

Size Lock"

Panel Type Locked

Native Resolution Locked

Recommended in 3 articles:
HDR
ASUS
HDR Gaming

Our Verdict

ASUS ROG Strix OLED XG27AQDMG

LG 27GX790B-B

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

Variants

ROG Strix OLED XG27AQDMG (27")
ROG Strix OLED XG27AQDMGZ (27")

27GX790B-B (27")

Review

See LG 27GX790B-B Review

360

Check Price

27"

ROG Strix OLED XG27AQDMG

27"

27GX790B-B

27"

ROG Strix OLED XG27AQDMGZ

27"

27GX790B-B

LG.com

27"

27GX790B-B

B&H

27"

27GX790B-B

BestBuy.com

27"

27GX790B-B

Walmart.com

Main Differences for

PC Gaming

Threshold

0.10

PC Gaming

9.0

0.0

No major differences between these monitors for pc gaming. See full list of tests below.

Full Comparison

PC Gaming

9.0

0.0

Console Gaming

8.3

0.0

Office

7.1

0.0

Editing

8.6

0.0

Brightness

7.5

0.0

Response Time

9.9

0.0

HDR Picture

9.0

0.0

SDR Picture

9.9

0.0

Color Accuracy

8.3

0.0

Design

Style

Design Picture

Compare High-Res

SAMPLE

To see pictures and test results

Curved

Locked

Curve Radius

Not Curved

Locked

Show Text

Build Quality

8.5

N/A

Build Quality Picture

Compare High-Res

SAMPLE

To see pictures and test results

Show Text

Ergonomics

8.7

N/A

Ergonomics Picture

Compare High-Res

SAMPLE

To see pictures and test results

Back Picture

Compare High-Res

SAMPLE

To see pictures and test results

Height Adjustment

4.5" (11.4 cm)

Lock" (Lock cm)

Min Height To Top Of Panel

15.1" (38.4 cm)

Lock" (Lock cm)

Tilt Range

-15° to 5°

Locked

Rotate Portrait/Landscape

Yes, Both Ways

Locked

Swivel Range

-45° to 45°

Locked

Wall Mount

VESA 100x100

Locked

Show Text

Stand

Stand Picture

Compare High-Res

SAMPLE

To see pictures and test results

Thickness Picture

Compare High-Res

SAMPLE

To see pictures and test results

Base Width

10.6" (26.8 cm)

Lock" (Lock cm)

Base Depth

8.6" (21.8 cm)

Lock" (Lock cm)

Thickness (With Display)

6.6" (16.8 cm)

Lock" (Lock cm)

Weight (With Display)

14.6 lbs (6.6 kg)

Lock lbs (Lock kg)

Show Text

Display

Display Picture

Compare High-Res

SAMPLE

To see pictures and test results

Size

27"

Lock"

Housing Width

23.9" (60.6 cm)

Lock" (Lock cm)

Housing Height

14.5" (36.9 cm)

Lock" (Lock cm)

Thickness (Without Stand)

2.2" (5.6 cm)

Lock" (Lock cm)

Weight (Without Stand)

9.2 lbs (4.2 kg)

Lock lbs (Lock kg)

Borders Size (Bezels)

0.4" (1.0 cm)

Lock" (Lock cm)

Controls

Controls Picture

Compare High-Res

SAMPLE

To see pictures and test results

Show Text

In The Box

In The Box Picture

Compare High-Res

SAMPLE

To see pictures and test results

Power Supply

External Brick

Locked

Show Text

Picture Quality

Contrast

N/A

Checkerboard Picture

Compare High-Res

SAMPLE

To see pictures and test results

Native Contrast

Inf : 1

Lock : 1

Contrast With Local Dimming

Inf : 1

Lock : 1

Show Text

Local Dimming

N/A

Local Dimming Video

SAMPLE

To see product videos

Local Dimming

Locked

Backlight

No Backlight

Locked

Show Text

SDR Brightness

7.9

N/A

Real Scene

334 cd/m²

Lock cd/m²

Peak 2% Window

452 cd/m²

Lock cd/m²

Peak 10% Window

448 cd/m²

Lock cd/m²

Peak 25% Window

452 cd/m²

Lock cd/m²

Peak 50% Window

336 cd/m²

Lock cd/m²

Peak 100% Window

274 cd/m²

Lock cd/m²

Sustained 2% Window

447 cd/m²

Lock cd/m²

Sustained 10% Window

445 cd/m²

Lock cd/m²

Sustained 25% Window

448 cd/m²

Lock cd/m²

Sustained 50% Window

335 cd/m²

Lock cd/m²

Sustained 100% Window

273 cd/m²

Lock cd/m²

Automatic Brightness Limiting (ABL)

0.034

Lock

Minimum Brightness

30 cd/m²

Lock cd/m²

Show Text

HDR Brightness

7.3

N/A

EOTF

Compare High-Res

SAMPLE

To see pictures and test results

VESA DisplayHDR Certification

DisplayHDR TRUE BLACK 400

Locked

Real Scene

504 cd/m²

Lock cd/m²

Peak 2% Window

1,151 cd/m²

Lock cd/m²

Peak 10% Window

760 cd/m²

Lock cd/m²

Peak 25% Window

445 cd/m²

Lock cd/m²

Peak 50% Window

329 cd/m²

Lock cd/m²

Peak 100% Window

264 cd/m²

Lock cd/m²

Sustained 2% Window

1,115 cd/m²

Lock cd/m²

Sustained 10% Window

747 cd/m²

Lock cd/m²

Sustained 25% Window

440 cd/m²

Lock cd/m²

Sustained 50% Window

328 cd/m²

Lock cd/m²

Sustained 100% Window

264 cd/m²

Lock cd/m²

Automatic Brightness Limiting (ABL)

0.084

Lock

Show Text

Gray Uniformity

8.9

N/A

50% Uniformity Picture

Compare High-Res

SAMPLE

To see pictures and test results

50% Std. Dev.

1.322%

Lock%

50% DSE

0.115%

Lock%

Show Text

Black Uniformity

N/A

Native Black Uniformity Picture

Compare High-Res

SAMPLE

To see pictures and test results

Native Std. Dev.

0.159%

Lock%

Black Uniformity Picture With Local Dimming

Compare High-Res

SAMPLE

To see pictures and test results

Std. Dev. w/ L.D.

N/A

Show Text

Color Accuracy (Pre-Calibration)

7.9

N/A

Pre Calibration Picture

Compare High-Res

SAMPLE

To see pictures and test results

Pre Gamma Curve Picture

Compare High-Res

SAMPLE

To see pictures and test results

Pre Color Picture

Compare High-Res

SAMPLE

To see pictures and test results

Picture Mode

sRGB Cal Mode

Locked

sRGB Gamut Area xy

106.8%

Lock%

White Balance dE (Avg.)

3.44

Lock

Color Temperature (Avg.)

6,160 K

Lock K

Gamma (Avg.)

2.44

Lock

Color dE (Avg.)

2.57

Lock

Contrast Setting

N/A

Lock

RGB Settings

Default

Locked

Gamma Setting

Default

Locked

Brightness Setting

Lock

Measured Brightness

120 cd/m²

Lock cd/m²

Brightness Locked

Locked

Show Text

Color Accuracy (Post-Calibration)

9.1

N/A

Post Calibration Picture

Compare High-Res

SAMPLE

To see pictures and test results

Post Gamma Curve Picture

Compare High-Res

SAMPLE

To see pictures and test results

Post Color Picture

Compare High-Res

SAMPLE

To see pictures and test results

Picture Mode

User Mode

Locked

sRGB Gamut Area xy

105.9%

Lock%

White Balance dE (Avg.)

0.61

Lock

Color Temperature (Avg.)

6,568 K

Lock K

Gamma (Avg.)

2.19

Lock

Color dE (Avg.)

1.03

Lock

Contrast Setting

Lock

RGB Settings

100-100-100

Locked

Gamma Setting

2.2

Locked

Brightness Setting

Lock

Measured Brightness

100 cd/m²

Lock cd/m²

ICC Profile

Download

Show Text

SDR Color Gamut

9.6

N/A

sRGB Color Gamut Picture

Compare High-Res

SAMPLE

To see pictures and test results

sRGB Coverage xy

100.0%

Lock%

sRGB Picture Mode

User Mode

Locked

Adobe RGB Color Gamut Picture

Compare High-Res

SAMPLE

To see pictures and test results

Adobe RGB Coverage xy

87.9%

Lock%

Adobe RGB Picture Mode

User Mode

Locked

Show Text

HDR Color Gamut

9.0

N/A

Wide Color Gamut

Yes

Locked

DCI-P3 Color Gamut Picture

Compare High-Res

SAMPLE

To see pictures and test results

DCI-P3 Coverage xy

96.3%

Lock%

DCI-P3 Picture Mode

Console HDR (100)

Locked

Rec. 2020 Color Gamut Picture

Compare High-Res

SAMPLE

To see pictures and test results

Rec. 2020 Coverage xy

69.4%

Lock%

Rec. 2020 Picture Mode

Console HDR (100)

Locked

Show Text

HDR Color Volume

8.0

N/A

DCI-P3 Color Volume ITP Picture

Compare High-Res

SAMPLE

To see pictures and test results

1,000 cd/m² DCI-P3 Coverage ICtCp

82.0%

Lock%

DCI-P3 Picture Mode

Console HDR (100)

Locked

Rec. 2020 Color Volume ITP Picture

Compare High-Res

SAMPLE

To see pictures and test results

10,000 cd/m² Rec. 2020 Coverage ICtCp

34.8%

Lock%

Rec. 2020 Picture Mode

Console HDR (100)

Locked

Show Text

Viewing Angle

9.8

N/A

Viewing Angle Video

SAMPLE

To see product videos

Chroma Graph

Compare High-Res

SAMPLE

To see pictures and test results

Color Washout From Left

70°

Lock°

Color Washout From Right

70°

Lock°

Hue Graph

Compare High-Res

SAMPLE

To see pictures and test results

Color Shift From Left

48°

Lock°

Color Shift From Right

63°

Lock°

Lightness Graph

Compare High-Res

SAMPLE

To see pictures and test results

Brightness Loss From Left

70°

Lock°

Brightness Loss From Right

70°

Lock°

Black Level Raise From Left

70°

Lock°

Black Level Raise From Right

70°

Lock°

Gamma Shift From Left

70°

Lock°

Gamma Shift From Right

70°

Lock°

Show Text

Text Clarity

6.5

N/A

ClearType On

Compare High-Res

SAMPLE

To see pictures and test results

ClearType Off

Compare High-Res

SAMPLE

To see pictures and test results

Panel Type

OLED

Locked

Pixels

Compare High-Res

SAMPLE

To see pictures and test results

Subpixel Layout

RWBG

Locked

Show Text

Direct Reflections

5.4

N/A

Ring Light Picture

Compare High-Res

SAMPLE

To see pictures and test results

Direct Reflections Graph

Preview Graph

SAMPLE

To see pictures and test results

Peak Direct Reflection Intensity

46.7%

Lock%

Screen Finish

Glossy

Locked

Show Text

Ambient Black Level Raise

8.2

N/A

Black Level Raise Picture

Compare High-Res

SAMPLE

To see pictures and test results

Ambient Black Level Raise Graph

Preview Graph

SAMPLE

To see pictures and test results

Black Luminance @ 0 lx

0.00 cd/m²

Lock cd/m²

Black Luminance @ 1000 lx

0.81 cd/m²

Lock cd/m²

Show Text

Total Reflected Light

8.4

N/A

Bright Room Off Picture

Compare High-Res

SAMPLE

To see pictures and test results

Total Reflection Ring Light Picture

Compare High-Res

SAMPLE

To see pictures and test results

Total Reflected Light Intensity

12,184% ⋅ pixel

Lock% ⋅ pixel

Diffraction Artifacts

Locked

Show Text

Gradient

8.5

N/A

Gradient Picture

Compare High-Res

SAMPLE

To see pictures and test results

Color Depth

10 Bit

Lock Bit

Show Text

Motion

Refresh Rate

8.0

N/A

Native Refresh Rate

240 Hz

Lock Hz

Max Refresh Rate

240 Hz

Lock Hz

Max Refresh Rate Over DP

240 Hz

Lock Hz

Max Refresh Rate Over HDMI

144 Hz

Lock Hz

Max Refresh Rate Over DP @ 10-bit

240 Hz

Lock Hz

Max Refresh Rate Over HDMI @ 10-Bit

60 Hz

Lock Hz

DSC Toggle

Yes

Locked

DSC Off Max Refresh Rate Over DP

240 Hz

N/A

DSC Off Max Refresh Rate Over HDMI

144 Hz

N/A

Show Text

Variable Refresh Rate (VRR)

Variable Refresh Rate

Yes

Locked

FreeSync

Yes

Locked

G-SYNC

Compatible (NVIDIA Certified)

Locked

VRR Maximum

240 Hz

Lock Hz

VRR Minimum

< 20 Hz

Locked

VRR Supported Connectors

DisplayPort, HDMI

Locked

Show Text

VRR Motion Performance

9.9

N/A

Pursuit Photo VRR

Compare High-Res

SAMPLE

To see pictures and test results

OD Mode CAD Comparison

Preview Graph

SAMPLE

To see pictures and test results

Recommended VRR OD Setting

No OD Mode

Locked

Variable Overdrive Advertised

Locked

Avg. CAD

Lock

Best CAD

Lock

Worst CAD

Lock

Show Text

Refresh Rate Compliance

9.8

N/A

Fast GTG Sequence

Preview Graph

SAMPLE

To see pictures and test results

VRR Compliance

Preview Graph

SAMPLE

To see pictures and test results

Compliance @ Max Hz

93%

Lock%

Compliance @ 120 FPS

96%

Lock%

Compliance @ 60 FPS

97%

Lock%

Show Text

CAD @ Max Refresh Rate

9.9

N/A

Pursuit Photo At Max Refresh

Compare High-Res

SAMPLE

To see pictures and test results

CAD Heatmap At Max Refresh

Compare High-Res

SAMPLE

To see pictures and test results

OD Transition Max Refresh Rate

OD noodmode

0 to 31

Cycle through frames

Get Insider Accessfor multiple image controls

Recommended Overdrive Setting

No OD Mode

Locked

Avg. CAD

Lock

Best 10% CAD

Lock

Worst 10% CAD

Lock

Show Text

Response Time @ Max Refresh Rate

First Response Time

0.3 ms

Lock ms

Total Response Time

0.3 ms

Lock ms

Recommended Overdrive Setting

No OD Mode

Locked

RGB Overshoot

0 RGB

Lock RGB

Worst 10% RGB Overshoot

0 RGB

Lock RGB

Worst 10% First Response Time

0.4 ms

Lock ms

Worst 10% Total Response Time

0.4 ms

Lock ms

Heatmap First Response

Compare High-Res

SAMPLE

To see pictures and test results

Heatmap Total Response

Compare High-Res

SAMPLE

To see pictures and test results

Heatmap RGB Overshoot

Compare High-Res

SAMPLE

To see pictures and test results

Show Text

CAD @ 120Hz

9.9

N/A

Pursuit Photo 120Hz

Compare High-Res

SAMPLE

To see pictures and test results

CAD Heatmap 120Hz

Compare High-Res

SAMPLE

To see pictures and test results

OD Transition 120Hz

OD noodmode

0 to 31

Cycle through frames

Get Insider Accessfor multiple image controls

Recommended Overdrive Setting

No OD Mode

Locked

Avg. CAD

Lock

Best 10% CAD

Lock

Worst 10% CAD

Lock

Show Text

Response Time @ 120Hz

Worst 10% First Response Time

0.4 ms

Lock ms

RGB Overshoot

0 RGB

Lock RGB

Total Response Time

0.3 ms

Lock ms

First Response Time

0.3 ms

Lock ms

Recommended Overdrive Setting

No OD Mode

Locked

Worst 10% Total Response Time

0.4 ms

Lock ms

Worst 10% RGB Overshoot

0 RGB

Lock RGB

120Hz First Response Heatmap

Compare High-Res

SAMPLE

To see pictures and test results

120Hz Total Response Heatmap

Compare High-Res

SAMPLE

To see pictures and test results

120Hz Heatmap RGB Overshoot

Compare High-Res

SAMPLE

To see pictures and test results

Show Text

CAD @ 60Hz

9.9

N/A

Pursuit Photo 60Hz

Compare High-Res

SAMPLE

To see pictures and test results

CAD Heatmap 60Hz

Compare High-Res

SAMPLE

To see pictures and test results

OD Transition 60Hz

OD noodmode

0 to 31

Cycle through frames

Get Insider Accessfor multiple image controls

Recommended Overdrive Setting

No OD Mode

Locked

Avg. CAD

Lock

Best 10% CAD

Lock

Worst 10% CAD

Lock

Show Text

Response Time @ 60Hz

Recommended Overdrive Setting

No OD Mode

Locked

First Response Time

0.3 ms

Lock ms

Total Response Time

0.3 ms

Lock ms

RGB Overshoot

0 RGB

Lock RGB

Worst 10% Total Response Time

0.4 ms

Lock ms

Worst 10% First Response Time

0.4 ms

Lock ms

Worst 10% RGB Overshoot

0 RGB

Lock RGB

60Hz First Response Heatmap

Compare High-Res

SAMPLE

To see pictures and test results

60Hz Total Response Heatmap

Compare High-Res

SAMPLE

To see pictures and test results

60Hz RGB Overshoot Heatmap

Compare High-Res

SAMPLE

To see pictures and test results

Show Text

Backlight Strobing (BFI)

Backlight Strobing Picture

Compare High-Res

SAMPLE

To see pictures and test results

Backlight Strobing Frequency Picture

Compare High-Res

SAMPLE

To see pictures and test results

Backlight Strobing (BFI)

Yes

Locked

Maximum Frequency

120 Hz

N/A

Minimum Frequency

120 Hz

N/A

Longest Pulse Width Brightness

132 cd/m²

N/A

Shortest Pulse Width Brightness

132 cd/m²

N/A

Pulse Width Control

Locked

Pulse Phase Control

Locked

Pulse Amplitude Control

Yes

Locked

VRR At The Same Time

Locked

Show Text

VRR Flicker

4.7

N/A

VRR Flicker Video

SAMPLE

To see product videos

VRR Flicker Graph

Compare High-Res

SAMPLE

To see pictures and test results

Dark Gray Flicker

6.3 RGB

Lock RGB

Middle Gray Flicker

2.4 RGB

Lock RGB

Light Gray Flicker

1.6 RGB

Lock RGB

Show Text

Image Flicker

N/A

Backlight Picture

Compare High-Res

SAMPLE

To see pictures and test results

Flicker-Free

Locked

PWM Dimming Frequency

0 Hz

Locked

Show Text

Inputs

Input Lag

8.9

N/A

Native Resolution @ Max Hz

2.6 ms

Lock ms

Native Resolution @ 120Hz

6.3 ms

Lock ms

Native Resolution @ 60Hz

14.1 ms

Lock ms

Backlight Strobing (BFI)

14.6 ms

N/A

Show Text

Resolution

7.5

N/A

Native Resolution

2560 x 1440

Locked

Aspect Ratio

16:9

Locked

Megapixels

3.7 MP

Lock MP

Pixel Density

111 PPI

Lock PPI

PS5 Compatibility

7.1

N/A

PS5 Compatibility Photo

Compare High-Res

SAMPLE

To see pictures and test results

PS5 Compatibility Table

Compare High-Res

SAMPLE

To see pictures and test results

4k @ 120Hz

Locked

4k @ 60Hz

Yes

Locked

1440p @ 120Hz

Yes

Locked

1440p @ 60Hz

Yes

Locked

1080p @ 120Hz

Yes

Locked

1080p @ 60Hz

Yes

Locked

Xbox Series X|S Compatibility

7.1

N/A

XSX Compatibility Photo

Compare High-Res

SAMPLE

To see pictures and test results

XSX Compatibility Table

Compare High-Res

SAMPLE

To see pictures and test results

4k @ 120Hz

Locked

4k @ 60Hz

Yes

Locked

1440p @ 120Hz

Yes

Locked

1440p @ 60Hz

Yes

Locked

1080p @ 120Hz

Yes

Locked

1080p @ 60Hz

Yes

Locked

Show Text

Inputs

Inputs 1

Compare High-Res

SAMPLE

To see pictures and test results

Inputs 2

Compare High-Res

SAMPLE

To see pictures and test results

DisplayPort

1 (DP 1.4)

Locked

DisplayPort Transmission Bandwidth

No DisplayPort 2.1

Locked

Mini DisplayPort

Locked

HDMI

2 (HDMI 2.0)

Locked

HDMI 2.1 Bandwidth

No HDMI 2.1

Locked

Daisy Chaining

Locked

3.5mm Audio Out

Yes

Locked

Ethernet

Locked

HDR10

Yes

Locked

Dolby Vision

Locked

USB

USB-A Ports

Locked

USB-A Rated Speed

5Gbps (USB 3.2 Gen 1)

Locked

USB-B Upstream Port

Yes

Locked

USB-C Ports

Locked

USB-C Upstream

No USB-C Ports

Locked

USB-C Rated Speed

No USB-C Ports

Locked

USB-C Power Delivery

No USB-C Ports

Locked

USB-C DisplayPort Alt Mode

No USB-C Ports

Locked

Thunderbolt

Locked

macOS Compatibility

macOS Screenshot

Compare High-Res

SAMPLE

To see pictures and test results

Show Text

Features

Additional Features

Speakers

Locked

RGB Illumination

Controllable

Locked

Multiple Input Display

Locked

KVM Switch

Locked

Smart OS

Locked

Show Text

On-Screen Display (OSD)

OSD Picture

Compare High-Res

SAMPLE

To see pictures and test results

Check Price

27"

ROG Strix OLED XG27AQDMG

27"

27GX790B-B

27"

ROG Strix OLED XG27AQDMGZ

27"

27GX790B-B