Products
ASUS ROG Strix OLED XG27ACDNG
Samsung Odyssey OLED G81SF S27FG810S
Tested using Methodology v2.1.1
Updated Nov 05, 2025 03:37 PM
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Amazon.com
Tested using Methodology v2.1.1
Updated Nov 07, 2025 02:17 PM
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Amazon.com
Max Refresh Rate
360 Hz
Size
27"
Pixel Type
QD-OLED
Native Resolution
2560 x 1440
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
QD-OLED
Native Resolution
3840 x 2160
Our Verdict
ASUS ROG Strix OLED XG27ACDNG
Samsung Odyssey OLED G81SF S27FG810S
The ASUS ROG Strix OLED XG27ACDNG and the Samsung Odyssey OLED G81SF S27FG810S are 27-inch QD-OLED gaming monitors. The ASUS is the better option if you're a competitive gamer and want the most responsive feel, as it has a higher maximum refresh rate, and its lower resolution results in higher frame rates. However, the Samsung is a better option if you want to play immersive single player games, as it has a more detailed image.
Variants
- ROG Strix OLED XG27ACDNG (27")
- S27FG810S (27")
Check Price
27"
ROG Strix OLED XG27ACDNG
SEE PRICE
Amazon.com
27"
S27FG810S
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Amazon.com
27"
ROG Strix OLED XG27ACDNG
SEE PRICE
BestBuy.com
27"
S27FG810S
SEE PRICE
BestBuy.com
27"
ROG Strix OLED XG27ACDNG
SEE PRICE
Walmart.com
27"
S27FG810S
SEE PRICE
Samsung.com
27"
ROG Strix OLED XG27ACDNG
SEARCH
B&H
27"
S27FG810S
SEE PRICE
B&H
27"
S27FG810S
SEARCH
Walmart.com
Main Differences for
PC Gaming
PC Gaming
Threshold
PC Gaming
9.2
9.1
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
9.1
Ergonomics Picture
Back Picture
Height Adjustment
4.7" (12.0 cm)
4.7" (12.0 cm)
Min Height To Top Of Panel
15.1" (38.3 cm)
16.6" (42.1 cm)
Tilt Range
-17.5° to 5°
-22.5° to 2.5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Both Ways
Swivel Range
-45° to 45°
-30° to 30°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
10.4" (26.5 cm)
11.6" (29.5 cm)
Base Depth
8.7" (22.0 cm)
9.9" (25.1 cm)
Thickness (With Display)
6.9" (17.5 cm)
7.6" (19.4 cm)
Weight (With Display)
16.1 lbs (7.3 kg)
15.7 lbs (7.1 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.1" (61.1 cm)
24.1" (61.2 cm)
Housing Height
14.5" (36.9 cm)
13.9" (35.4 cm)
Thickness (Without Stand)
2.6" (6.6 cm)
1.9" (4.8 cm)
Weight (Without Stand)
10.8 lbs (4.9 kg)
8.8 lbs (4.0 kg)
Borders Size (Bezels)
0.4" (0.9 cm)
0.5" (1.2 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
7.7
6.9
Real Scene
322 cd/m²
252 cd/m²
Peak 2% Window
411 cd/m²
264 cd/m²
Peak 10% Window
414 cd/m²
264 cd/m²
Peak 25% Window
344 cd/m²
263 cd/m²
Peak 50% Window
292 cd/m²
261 cd/m²
Peak 100% Window
245 cd/m²
235 cd/m²
Sustained 2% Window
410 cd/m²
262 cd/m²
Sustained 10% Window
411 cd/m²
263 cd/m²
Sustained 25% Window
341 cd/m²
262 cd/m²
Sustained 50% Window
290 cd/m²
260 cd/m²
Sustained 100% Window
244 cd/m²
192 cd/m²
Automatic Brightness Limiting (ABL)
0.034
0.008
Minimum Brightness
13 cd/m²
67 cd/m²
HDR Brightness
6.8
6.7
EOTF
VESA DisplayHDR Certification
DisplayHDR TRUE BLACK 400
DisplayHDR TRUE BLACK 400
Real Scene
413 cd/m²
427 cd/m²
Peak 2% Window
992 cd/m²
1,021 cd/m²
Peak 10% Window
454 cd/m²
467 cd/m²
Peak 25% Window
359 cd/m²
359 cd/m²
Peak 50% Window
301 cd/m²
252 cd/m²
Peak 100% Window
252 cd/m²
196 cd/m²
Sustained 2% Window
982 cd/m²
970 cd/m²
Sustained 10% Window
448 cd/m²
465 cd/m²
Sustained 25% Window
354 cd/m²
347 cd/m²
Sustained 50% Window
298 cd/m²
249 cd/m²
Sustained 100% Window
250 cd/m²
195 cd/m²
Automatic Brightness Limiting (ABL)
0.078
0.092
Gray Uniformity
9.3
8.7
50% Uniformity Picture
50% Std. Dev.
0.602%
0.886%
50% DSE
0.100%
0.131%
Black Uniformity
10
10
Native Black Uniformity Picture
Native Std. Dev.
0.293%
0.247%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
8.5
8.8
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB Cal Mode
Graphic
sRGB Gamut Area xy
107.0%
98.2%
White Balance dE (Avg.)
1.74
2.16
Color Temperature (Avg.)
6,411 K
6,580 K
Gamma (Avg.)
2.27
2.07
Color dE (Avg.)
1.49
2.12
Contrast Setting
N/A
50
RGB Settings
Default
0-0-0
Gamma Setting
Default
0
Brightness Setting
44
48
Measured Brightness
119 cd/m²
244 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.8
9.6
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
User Mode
Graphic
sRGB Gamut Area xy
100.4%
102.5%
White Balance dE (Avg.)
0.43
0.74
Color Temperature (Avg.)
6,500 K
6,478 K
Gamma (Avg.)
2.19
2.18
Color dE (Avg.)
0.44
0.46
Contrast Setting
75
50
RGB Settings
97-98-97
5, -1, 1
Gamma Setting
2.2
0
Brightness Setting
25
9
Measured Brightness
100 cd/m²
101 cd/m²
SDR Color Gamut
9.8
9.7
sRGB Color Gamut Picture
sRGB Coverage xy
100.0%
100.0%
sRGB Picture Mode
User Mode
Graphic
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
95.2%
92.6%
Adobe RGB Picture Mode
User Mode
Graphic
HDR Color Gamut
9.6
9.6
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
99.3%
99.4%
DCI-P3 Picture Mode
Console HDR
HDR Graphic
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
79.8%
77.6%
Rec. 2020 Picture Mode
Console HDR
HDR Graphic
HDR Color Volume
8.9
8.8
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
97.0%
93.4%
DCI-P3 Picture Mode
Console HDR
HDR Graphic
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
47.6%
45.9%
Rec. 2020 Picture Mode
Console HDR
HDR Graphic
Viewing Angle
10
10
Viewing Angle Video
Chroma Graph
Color Washout From Left
70°
70°
Color Washout From Right
70°
70°
Hue Graph
Color Shift From Left
70°
70°
Color Shift From Right
70°
70°
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°
Text Clarity
7.0
9.0
ClearType On
ClearType Off
Pixel Type
QD-OLED
QD-OLED
Pixels
Subpixel Layout
Triangular RGB
Triangular RGB
Direct Reflections
7.0
9.6
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
25.4%
6.0%
Screen Finish
Glossy
Matte
Ambient Black Level Raise
4.1
4.9
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.00 cd/m²
0.00 cd/m²
Black Luminance @ 1000 lx
3.53 cd/m²
2.91 cd/m²
Total Reflected Light
9.0
8.9
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
4,720% ⋅ pixel
7,255% ⋅ pixel
Diffraction Artifacts
No
No
Gradient
9.6
9.7
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
8.4
8.0
Native Refresh Rate
360 Hz
240 Hz
Max Refresh Rate
360 Hz
240 Hz
Max Refresh Rate Over DP
360 Hz
240 Hz
Max Refresh Rate Over HDMI
360 Hz
240 Hz
Max Refresh Rate Over DP @ 10-bit
360 Hz
240 Hz
Max Refresh Rate Over HDMI @ 10-Bit
360 Hz
240 Hz
DSC Toggle
Yes
No
DSC Off Max Refresh Rate Over DP
180 Hz
N/A
DSC Off Max Refresh Rate Over HDMI
180 Hz
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
360 Hz
240 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
9.8
9.8
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
No OD Mode
No OD Mode
Variable Overdrive Advertised
No
No
Avg. CAD
22
14
Best CAD
22
13
Worst CAD
23
14
Refresh Rate Compliance
9.7
9.6
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
85%
92%
Compliance @ 120 FPS
94%
93%
Compliance @ 60 FPS
96%
96%
CAD @ Max Refresh Rate
9.8
9.9
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD nomode
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
22
13
Best 10% CAD
14
6
Worst 10% CAD
36
28
Response Time @ Max Refresh Rate
First Response Time
0.6 ms
0.4 ms
Total Response Time
0.6 ms
0.6 ms
Recommended Overdrive Setting
No OD Mode
No OD Mode
RGB Overshoot
0 RGB
1 RGB
Worst 10% RGB Overshoot
0 RGB
11 RGB
Worst 10% First Response Time
2.4 ms
2.5 ms
Worst 10% Total Response Time
2.4 ms
2.8 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
9.8
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
22
14
Best 10% CAD
12
6
Worst 10% CAD
33
30
Response Time @ 120Hz
Worst 10% First Response Time
2.3 ms
1.5 ms
RGB Overshoot
0 RGB
1 RGB
Total Response Time
0.7 ms
0.5 ms
First Response Time
0.6 ms
0.4 ms
Recommended Overdrive Setting
No OD Mode
No OD Mode
Worst 10% Total Response Time
3.1 ms
1.8 ms
Worst 10% RGB Overshoot
1 RGB
12 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
9.8
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
23
19
Best 10% CAD
12
9
Worst 10% CAD
38
36
Response Time @ 60Hz
Recommended Overdrive Setting
No OD Mode
No OD Mode
First Response Time
0.7 ms
0.5 ms
Total Response Time
1.0 ms
0.6 ms
RGB Overshoot
0 RGB
1 RGB
Worst 10% Total Response Time
5.6 ms
2.2 ms
Worst 10% First Response Time
3.1 ms
2.0 ms
Worst 10% RGB Overshoot
1 RGB
10 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)
Yes
No BFI
Maximum Frequency
180 Hz
N/A
Minimum Frequency
120 Hz
N/A
Longest Pulse Width Brightness
146 cd/m²
N/A
Shortest Pulse Width Brightness
146 cd/m²
N/A
Pulse Width Control
No
No BFI
Pulse Phase Control
No
No BFI
Pulse Amplitude Control
No
No BFI
VRR At The Same Time
No
No BFI
VRR Flicker
5.2
5.4
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
5.7 RGB
5.1 RGB
Middle Gray Flicker
0.9 RGB
1.9 RGB
Light Gray Flicker
2.3 RGB
0.2 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
No
No
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.1
9.1
Native Resolution @ Max Hz
2.0 ms
2.7 ms
Native Resolution @ 120Hz
5.5 ms
5.2 ms
Native Resolution @ 60Hz
14.2 ms
9.8 ms
Backlight Strobing (BFI)
6.8 ms
N/A
Resolution
7.5
8.8
Native Resolution
2560 x 1440
3840 x 2160
Aspect Ratio
16:9
16:9
Megapixels
3.7 MP
8.3 MP
Pixel Density
109 PPI
166 PPI
PS5 Compatibility
9.3
10
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
10
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
Inputs 1
Inputs 2
DisplayPort
1 (DP 1.4)
1 (DP 1.4)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
No DisplayPort 2.1
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.1)
2 (HDMI 2.1)
HDMI 2.1 Bandwidth
48Gbps (FRL 12x4)
48Gbps (FRL 12x4)
Daisy Chaining
No
No
3.5mm Audio Out
Yes
Yes
Ethernet
No
No
HDR10
Yes
Yes
Dolby Vision
No
No
USB
USB-A Ports
3
2
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
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
Controllable
Presets
Multiple Input Display
PIP + PBP
PIP
KVM Switch
Yes
No
Smart OS
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
ROG Strix OLED XG27ACDNG
SEE PRICE
Amazon.com
27"
S27FG810S
SEE PRICE
Amazon.com
27"
ROG Strix OLED XG27ACDNG
SEE PRICE
BestBuy.com
27"
S27FG810S
SEE PRICE
BestBuy.com
27"
ROG Strix OLED XG27ACDNG
SEE PRICE
Walmart.com
27"
S27FG810S
SEE PRICE
Samsung.com
27"
ROG Strix OLED XG27ACDNG
SEARCH
B&H
27"
S27FG810S
SEE PRICE
B&H
27"
S27FG810S
SEARCH
Walmart.com
ASUS ROG Strix OLED XG27ACDNG
Samsung Odyssey OLED G81SF S27FG810S
Comments
ASUS ROG Strix OLED XG27ACDNG vs Samsung Odyssey OLED G81SF S27FG810S: Main Discussion
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