Products
Xiaomi G Pro 27i
AOC Q27G40XMN
Tested using Methodology v2.1.1
Updated Dec 18, 2025 02:45 PM
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Tested using Methodology v2.1.2
Updated Mar 16, 2026 07:13 PM
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Size
27"
Panel Type
IPS
Native Resolution
2560 x 1440
Max Refresh Rate
180 Hz
Size
27"
Panel Type
LCD
Native Resolution
2560 x 1440
Max Refresh Rate
180 Hz
Sub-Type
VA
Our Verdict
Xiaomi G Pro 27i
AOC Q27G40XMN
The AOC Q27G40XMN and the Xiaomi G Pro 27i are both 1440p gaming monitors with Mini LED backlighting. They each have 1,152 dimming zones and get very bright, but the local dimming feature on the AOC results in less blooming. Plus, the AOC has a VA panel with a higher native contrast ratio if you aren't going to use local dimming. The Xiaomi has advantages in other ways, though, as it has wider viewing angles and better ergonomics, making it easier to share the screen with others. The Xiaomi also has less smearing and inverse ghosting with fast-moving objects.
Variants
- G Pro 27i (27")
- Q27G40XMN (27")
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27"
G Pro 27i
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27"
Q27G40XMN
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27"
G Pro 27i
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27"
Q27G40XMN
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27"
G Pro 27i
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27"
Q27G40XMN
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27"
G Pro 27i
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27"
Q27G40XMN
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27"
G Pro 27i
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Xiaomi
27"
Q27G40XMN
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AOC
Main Differences for
PC Gaming
PC Gaming
Threshold
PC Gaming
Full Comparison
Design
Style
Design Picture
Curved
Curve Radius
Build Quality
Build Quality Picture
Ergonomics
Ergonomics Picture
Back Picture
Height Adjustment
Min Height To Top Of Panel
Tilt Range
Rotate Portrait/Landscape
Swivel Range
Wall Mount
Stand
Stand Picture
Thickness Picture
Base Width
Base Depth
Thickness (With Display)
Weight (With Display)
Display
Display Picture
Size
Housing Width
Housing Height
Thickness (Without Stand)
Weight (Without Stand)
Borders Size (Bezels)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Picture Quality
Contrast
Checkerboard Picture
Native Contrast
Contrast With Local Dimming
Local Dimming
Local Dimming Video
Local Dimming
Backlight
SDR Brightness
Real Scene
Peak 2% Window
Peak 10% Window
Peak 25% Window
Peak 50% Window
Peak 100% Window
Sustained 2% Window
Sustained 10% Window
Sustained 25% Window
Sustained 50% Window
Sustained 100% Window
Automatic Brightness Limiting (ABL)
Minimum Brightness
HDR Brightness
EOTF
VESA DisplayHDR Certification
Real Scene
Peak 2% Window
Peak 10% Window
Peak 25% Window
Peak 50% Window
Peak 100% Window
Sustained 2% Window
Sustained 10% Window
Sustained 25% Window
Sustained 50% Window
Sustained 100% Window
Automatic Brightness Limiting (ABL)
Gray Uniformity
50% Uniformity Picture
50% Std. Dev.
50% DSE
Black Uniformity
Native Black Uniformity Picture
Native Std. Dev.
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
Color Accuracy (Pre-Calibration)
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB Gamut Area xy
White Balance dE (Avg.)
Color Temperature (Avg.)
Gamma (Avg.)
Color dE (Avg.)
Contrast Setting
RGB Settings
Gamma Setting
Brightness Setting
Measured Brightness
Brightness Locked
Color Accuracy (Post-Calibration)
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
sRGB Gamut Area xy
White Balance dE (Avg.)
Color Temperature (Avg.)
Gamma (Avg.)
Color dE (Avg.)
Contrast Setting
RGB Settings
Gamma Setting
Brightness Setting
Measured Brightness
ICC Profile
SDR Color Gamut
sRGB Color Gamut Picture
sRGB Coverage xy
sRGB Picture Mode
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
Adobe RGB Picture Mode
HDR Color Gamut
Wide Color Gamut
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
DCI-P3 Picture Mode
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
Rec. 2020 Picture Mode
HDR Color Volume
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
DCI-P3 Picture Mode
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
Rec. 2020 Picture Mode
Viewing Angle
Viewing Angle Video
Chroma Graph
Color Washout From Left
Color Washout From Right
Hue Graph
Color Shift From Left
Color Shift From Right
Lightness Graph
Brightness Loss From Left
Brightness Loss From Right
Black Level Raise From Left
Black Level Raise From Right
Gamma Shift From Left
Gamma Shift From Right
Text Clarity
ClearType On
ClearType Off
Panel Type
Pixels
Subpixel Layout
Panel Technology
Spectral Power Distribution
Pixels
Panel Type
Sub-Type
Subpixel Layout
Direct Reflections
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
Screen Finish
Ambient Black Level Raise
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
Black Luminance @ 1000 lx
Total Reflected Light
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
Diffraction Artifacts
Gradient
Gradient Picture
Color Depth
Motion
Refresh Rate
Dual Mode Setting
Native Refresh Rate
Max Refresh Rate
Max Refresh Rate Over DP
Max Refresh Rate Over HDMI
Max Refresh Rate Over DP @ 10-bit
Max Refresh Rate Over HDMI @ 10-Bit
DSC Toggle
DSC Off Max Refresh Rate Over DP
DSC Off Max Refresh Rate Over HDMI
Variable Refresh Rate (VRR)
Variable Refresh Rate
FreeSync
G-SYNC
VRR Maximum
VRR Minimum
VRR Supported Connectors
VRR Motion Performance
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Variable Overdrive Advertised
Avg. CAD
Best CAD
Worst CAD
Refresh Rate Compliance
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
Compliance @ 120 FPS
Compliance @ 60 FPS
CAD @ Max Refresh Rate
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
Recommended Overdrive Setting
Avg. CAD
Best 10% CAD
Worst 10% CAD
Response Time @ Max Refresh Rate
First Response Time
Total Response Time
Recommended Overdrive Setting
RGB Overshoot
Worst 10% RGB Overshoot
Worst 10% First Response Time
Worst 10% Total Response Time
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
Recommended Overdrive Setting
Avg. CAD
Best 10% CAD
Worst 10% CAD
Response Time @ 120Hz
Worst 10% First Response Time
RGB Overshoot
Total Response Time
First Response Time
Recommended Overdrive Setting
Worst 10% Total Response Time
Worst 10% RGB Overshoot
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
Recommended Overdrive Setting
Avg. CAD
Best 10% CAD
Worst 10% CAD
Response Time @ 60Hz
Recommended Overdrive Setting
First Response Time
Total Response Time
RGB Overshoot
Worst 10% Total Response Time
Worst 10% First Response Time
Worst 10% RGB Overshoot
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)
Maximum Frequency
Minimum Frequency
Longest Pulse Width Brightness
Shortest Pulse Width Brightness
Pulse Width Control
Pulse Phase Control
Pulse Amplitude Control
VRR At The Same Time
VRR Flicker
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
Middle Gray Flicker
Light Gray Flicker
VRR Flicker Control Setting
Image Flicker
Backlight Picture
Flicker-Free
PWM Dimming Frequency
Inputs
Input Lag
Native Resolution @ Max Hz
Native Resolution @ 120Hz
Native Resolution @ 60Hz
Backlight Strobing (BFI)
Resolution
Native Resolution
Aspect Ratio
Megapixels
Pixel Density
PS5 Compatibility
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
4k @ 60Hz
1440p @ 120Hz
1440p @ 60Hz
1080p @ 120Hz
1080p @ 60Hz
Xbox Series X|S Compatibility
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
4k @ 60Hz
1440p @ 120Hz
1440p @ 60Hz
1080p @ 120Hz
1080p @ 60Hz
Inputs
Inputs 1
Inputs 2
DisplayPort
DisplayPort Transmission Bandwidth
Mini DisplayPort
HDMI
HDMI 2.1 Bandwidth
Daisy Chaining
3.5mm Audio Out
Ethernet
HDR10
Dolby Vision
USB
USB-A Ports
USB-A Rated Speed
USB-B Upstream Port
USB-C Ports
USB-C Upstream
USB-C Rated Speed
USB-C Power Delivery
USB-C DisplayPort Alt Mode
Thunderbolt
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
RGB Illumination
Multiple Input Display
KVM Switch
Smart OS
On-Screen Display (OSD)
OSD Picture
Check Price
27"
G Pro 27i
SEARCH
Amazon.com
27"
Q27G40XMN
SEE PRICE
BestBuy.com
27"
G Pro 27i
SEE PRICE
Walmart.com
27"
Q27G40XMN
SEE PRICE
Walmart.com
27"
G Pro 27i
SEARCH
B&H
27"
Q27G40XMN
SEARCH
Amazon.com
27"
G Pro 27i
SEARCH
BestBuy.com
27"
Q27G40XMN
SEARCH
B&H
27"
G Pro 27i
SEARCH
Xiaomi
27"
Q27G40XMN
SEARCH
AOC
Xiaomi G Pro 27i
AOC Q27G40XMN
Comments
Xiaomi G Pro 27i vs AOC Q27G40XMN: Main Discussion
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