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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Features
- Comments
MSI MPG 271QRX QD-OLED vs LG 27GX790A-B
Side-by-Side Comparison
Products
MSI MPG 271QRX QD-OLED
LG 27GX790A-B
Tested using Methodology v2.0.1
Updated Apr 08, 2025 05:38 PM
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Amazon.comTested using Methodology v2.0.1
Updated Feb 26, 2025 07:50 PM
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Max Refresh Rate360 Hz
Size27"
Pixel TypeQD-OLED
Native Resolution2560 x 1440
Max Refresh Rate480 Hz
Size27"
Pixel TypeOLED
Native Resolution2560 x 1440
Variants
- MPG 271QRX QD-OLED (27")
- 27GX790A-B (27")
Our Verdict
MSI MPG 271QRX QD-OLED
LG 27GX790A-B
The MSI MPG 271QRX QD-OLED and the LG 27GX790A-B are high refresh rate 1440p OLED gaming monitors. The MSI is the better option for most people, as it has slightly sharper text, more vivid colors, and a USB-C port with 90W of power. It also has equally low input lag at its max refresh rate. However, the LG is a better option if you prefer the added smoothness of a 480Hz display.
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27"
MPG 271QRX QD-OLED
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Amazon.com27"
27GX790A-B
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Amazon.com27"
MPG 271QRX QD-OLED
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Amazon.com27"
27GX790A-B
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27GX790A-B
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B&H27"
27GX790A-B
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Samsung.com27"
27GX790A-B
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Walmart.comMain Differences forPC Gaming
PC Gaming
Threshold
PC Gaming
9.2
9.2
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
8.5
8.5
Build Quality Picture
Ergonomics
9.0
8.2
Ergonomics Picture
Back Picture
Height Adjustment
4.3" (11.0 cm)
4.9" (12.5 cm)
Min Height To Top Of Panel
16.7" (42.3 cm)
17.9" (45.5 cm)
Tilt Range
-20° to 5°
-5° to 12.5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Clockwise
Swivel Range
-30° to 30°
-25° to 25°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
12.3" (31.2 cm)
12.1" (30.7 cm)
Base Depth
9.4" (24.0 cm)
9.8" (25.0 cm)
Thickness (With Display)
7.1" (18.0 cm)
7.0" (17.7 cm)
Weight (With Display)
18.0 lbs (8.2 kg)
20.3 lbs (9.2 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.0" (61.0 cm)
23.9" (60.6 cm)
Housing Height
14.0" (35.6 cm)
14.1" (35.9 cm)
Thickness (Without Stand)
2.6" (6.5 cm)
1.8" (4.6 cm)
Weight (Without Stand)
12.0 lbs (5.4 kg)
11.3 lbs (5.1 kg)
Borders Size (Bezels)
0.5" (1.2 cm)
0.3" (0.8 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
External Brick
Picture Quality
Contrast
10
10
Checkerboard Picture
Native Contrast
Inf : 1
Inf : 1
Contrast With Local Dimming
Inf : 1
Inf : 1
Local Dimming
10
10
Local Dimming Video
Local Dimming
No
No
Backlight
No Backlight
No Backlight
SDR Brightness
6.9
6.3
Real Scene
245 cd/m²
181 cd/m²
Peak 2% Window
254 cd/m²
347 cd/m²
Peak 10% Window
252 cd/m²
346 cd/m²
Peak 25% Window
254 cd/m²
348 cd/m²
Peak 50% Window
256 cd/m²
282 cd/m²
Peak 100% Window
256 cd/m²
223 cd/m²
Sustained 2% Window
253 cd/m²
345 cd/m²
Sustained 10% Window
251 cd/m²
344 cd/m²
Sustained 25% Window
254 cd/m²
345 cd/m²
Sustained 50% Window
255 cd/m²
281 cd/m²
Sustained 100% Window
254 cd/m²
222 cd/m²
Automatic Brightness Limiting (ABL)
0.001
0.030
Minimum Brightness
27 cd/m²
12 cd/m²
HDR Brightness
6.7
7.0
EOTF
VESA DisplayHDR Certification
DisplayHDR TRUE BLACK 400
DisplayHDR TRUE BLACK 400
Real Scene
403 cd/m²
445 cd/m²
Peak 2% Window
1,003 cd/m²
1,255 cd/m²
Peak 10% Window
467 cd/m²
814 cd/m²
Peak 25% Window
365 cd/m²
453 cd/m²
Peak 50% Window
307 cd/m²
330 cd/m²
Peak 100% Window
257 cd/m²
269 cd/m²
Sustained 2% Window
996 cd/m²
1,155 cd/m²
Sustained 10% Window
464 cd/m²
750 cd/m²
Sustained 25% Window
364 cd/m²
412 cd/m²
Sustained 50% Window
306 cd/m²
299 cd/m²
Sustained 100% Window
256 cd/m²
242 cd/m²
Automatic Brightness Limiting (ABL)
0.078
0.093
Horizontal Viewing Angle
10
9.9
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
70°
70°
Color Washout From Right
70°
70°
Horizontal Hue Graph
Color Shift From Left
70°
61°
Color Shift From Right
70°
68°
Horizontal Lightness Graph
Brightness Loss From Left
70°
70°
Brightness Loss From Right
70°
70°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
70°
70°
Gamma Shift From Right
70°
70°
Vertical Viewing Angle
10
10
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
70°
70°
Color Washout From Above
70°
70°
Vertical Hue Graph
Color Shift From Below
70°
69°
Color Shift From Above
70°
70°
Vertical Lightness Graph
Brightness Loss From Below
70°
70°
Brightness Loss From Above
70°
70°
Black Level Raise From Below
70°
70°
Black Level Raise From Above
70°
70°
Gamma Shift From Below
70°
70°
Gamma Shift From Above
70°
70°
Gray Uniformity
9.0
8.7
50% Uniformity Picture
50% Std. Dev.
0.476%
1.546%
50% DSE
0.117%
0.125%
Black Uniformity
10
10
Native Black Uniformity Picture
Native Std. Dev.
0.225%
0.323%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
8.3
6.0
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB
Gamer 1
sRGB Gamut Area xy
110.1%
136.7%
White Balance dE (Avg.)
0.99
3.26
Color Temperature (Avg.)
6,238 K
6,910 K
Gamma (Avg.)
2.25
1.82
Color dE (Avg.)
1.75
3.46
Contrast Setting
N/A
70
RGB Settings
Default
50-50-50
Gamma Setting
No Gamma Setting
Mode 2
Brightness Setting
70
100
Measured Brightness
217 cd/m²
193 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.7
9.4
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
User
Gamer 1
sRGB Gamut Area xy
101.7%
101.8%
White Balance dE (Avg.)
0.51
0.67
Color Temperature (Avg.)
6,492 K
6,564 K
Gamma (Avg.)
2.19
2.23
Color dE (Avg.)
0.50
1.57
Contrast Setting
70
70
RGB Settings
97-99-100
50-55-56
Gamma Setting
No Gamma Setting
Mode 2
Brightness Setting
27
69
Measured Brightness
101 cd/m²
100 cd/m²
SDR Color Gamut
9.7
9.6
sRGB Color Gamut Picture
sRGB Coverage xy
100.0%
100.0%
sRGB Picture Mode
User
Gamer 1
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
92.7%
89.7%
Adobe RGB Picture Mode
User
Gamer 1
HDR Color Gamut
9.5
9.3
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
99.4%
98.1%
DCI-P3 Picture Mode
Display P3, HDR Peak 1000
Gamer 1
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
74.5%
71.0%
Rec. 2020 Picture Mode
Display P3, HDR Peak 1000
Gamer 1
HDR Color Volume
8.8
8.1
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
97.9%
73.4%
DCI-P3 Picture Mode
Display P3, HDR Peak 1000
Gamer 1
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
44.6%
36.5%
Rec. 2020 Picture Mode
Display P3, HDR Peak 1000
Gamer 1
Text Clarity
7.0
6.5
ClearType On
ClearType Off
Pixel Type
QD-OLED
OLED
Pixels
Subpixel Layout
Triangular RGB
RGWB
Reflections
9.4
8.8
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Glossy
Matte
Total Reflections
1.3%
0.8%
Indirect Reflections
0.9%
1.7%
Calculated Direct Reflections
0.5%
0.9%
Gradient
9.8
9.5
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
8.4
8.8
Native Refresh Rate
360 Hz
480 Hz
Max Refresh Rate
360 Hz
480 Hz
Max Refresh Rate Over DP
360 Hz
480 Hz
Max Refresh Rate Over HDMI
360 Hz
480 Hz
Max Refresh Rate Over DP @ 10-bit
360 Hz
480 Hz
Max Refresh Rate Over HDMI @ 10-Bit
360 Hz
480 Hz
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Compatible (Tested)
Yes
G-SYNC
Compatible (Tested)
Compatible (NVIDIA Certified)
VRR Maximum
360 Hz
480 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
9.9
9.9
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
No OD Mode
No OD Mode
Variable Overdrive Advertised
No
No
Avg. CAD
12
11
Best CAD
11
11
Worst CAD
20
12
Refresh Rate Compliance
9.7
9.8
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
91%
91%
Compliance @ 120 FPS
96%
97%
Compliance @ 60 FPS
97%
98%
CAD @ Max Refresh Rate
9.9
9.9
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD noodmode
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
11
10
Best 10% CAD
6
5
Worst 10% CAD
16
14
Response Time @ Max Refresh Rate
First Response Time
0.3 ms
0.2 ms
Total Response Time
0.3 ms
0.4 ms
Recommended Overdrive Setting
No OD Mode
No OD Mode
RGB Overshoot
0 RGB
0 RGB
Worst 10% RGB Overshoot
0 RGB
0 RGB
Worst 10% First Response Time
0.9 ms
0.3 ms
Worst 10% Total Response Time
0.9 ms
1.8 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
9.9
9.9
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD noodmode
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
12
13
Best 10% CAD
6
6
Worst 10% CAD
18
19
Response Time @ 120Hz
Worst 10% First Response Time
0.7 ms
0.5 ms
RGB Overshoot
0 RGB
0 RGB
Total Response Time
0.3 ms
0.3 ms
First Response Time
0.3 ms
0.3 ms
Recommended Overdrive Setting
No OD Mode
No OD Mode
Worst 10% Total Response Time
0.7 ms
1.1 ms
Worst 10% RGB Overshoot
0 RGB
1 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
9.9
9.9
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD noodmode
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
12
16
Best 10% CAD
7
7
Worst 10% CAD
18
25
Response Time @ 60Hz
Recommended Overdrive Setting
No OD Mode
No OD Mode
First Response Time
0.3 ms
0.4 ms
Total Response Time
0.3 ms
0.4 ms
RGB Overshoot
0 RGB
0 RGB
Worst 10% Total Response Time
0.7 ms
0.6 ms
Worst 10% First Response Time
0.7 ms
0.6 ms
Worst 10% RGB Overshoot
0 RGB
0 RGB
60Hz First Response Heatmap
60Hz Total Response Heatmap
60Hz RGB Overshoot Heatmap
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
No BFI
No BFI
Maximum Frequency
N/A
N/A
Minimum Frequency
N/A
N/A
Longest Pulse Width Brightness
N/A
N/A
Shortest Pulse Width Brightness
N/A
N/A
Pulse Width Control
No BFI
No BFI
Pulse Phase Control
No BFI
No BFI
Pulse Amplitude Control
No BFI
No BFI
VRR At The Same Time
No BFI
No BFI
VRR Flicker
5.4
4.5
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
5.6 RGB
5.4 RGB
Middle Gray Flicker
1.2 RGB
2.6 RGB
Light Gray Flicker
1.2 RGB
2.4 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
No
No
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.2
9.0
Native Resolution @ Max Hz
1.9 ms
1.9 ms
Native Resolution @ 120Hz
5.7 ms
5.4 ms
Native Resolution @ 60Hz
14.5 ms
27.1 ms
Backlight Strobing (BFI)
N/A
N/A
Resolution
7.5
7.5
Native Resolution
2560 x 1440
2560 x 1440
Aspect Ratio
16:9
16:9
Megapixels
3.7 MP
3.7 MP
Pixel Density
109 PPI
109 PPI
PS5 Compatibility
9.3
9.3
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
Yes
Yes
4k @ 60Hz
Yes
Yes
1440p @ 120Hz
Yes
Yes
1440p @ 60Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
Xbox Series X|S Compatibility
9.3
9.3
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
Yes
Yes
4k @ 60Hz
Yes
Yes
1440p @ 120Hz
Yes
Yes
1440p @ 60Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.4)
1 (DP 2.1)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
UHBR13.5 (54.00 Gbps)
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.1)
2 (HDMI 2.1)
HDMI 2.1 Bandwidth
48Gbps (FRL 12x4)
48Gbps (FRL 12x4)
DVI
No
No
VGA
No
No
Daisy Chaining
No
No
3.5mm Audio Out
1
1
HDR10
Yes
Yes
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
2
2
USB-A Rated Speed
480Mbps (USB 2.0)
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
Yes
USB-C Ports
1
0
USB-C Upstream
Yes
No USB-C Ports
USB-C Rated Speed
5Gbps (USB 3.2 Gen 1)
No USB-C Ports
USB-C Power Delivery
90W
No USB-C Ports
USB-C DisplayPort Alt Mode
Yes
No USB-C Ports
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
Presets
Presets
Multiple Input Display
PIP + PBP
No
KVM Switch
Yes
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
MPG 271QRX QD-OLED
SEARCH
Amazon.com27"
27GX790A-B
SEE PRICE
Amazon.com27"
MPG 271QRX QD-OLED
SEARCH
Amazon.com27"
27GX790A-B
SEE PRICE
BestBuy.com27"
27GX790A-B
SEARCH
B&H27"
27GX790A-B
SEARCH
Samsung.com27"
27GX790A-B
SEARCH
Walmart.com
MSI MPG 271QRX QD-OLED
LG 27GX790A-B
Comments
MSI MPG 271QRX QD-OLED vs LG 27GX790A-B: Main Discussion
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