Products
ASUS ROG Swift OLED PG27UCDM
Samsung Odyssey 3D G90XF S27FG900X
Tested using Methodology v2.1.1
Updated Nov 05, 2025 03:35 PM
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Amazon.com
Tested using Methodology v2.1.1
Updated Nov 07, 2025 02:37 PM
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Amazon.com
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
QD-OLED
Native Resolution
3840 x 2160
Max Refresh Rate
165 Hz
Size
27"
Pixel Type
IPS
Native Resolution
3840 x 2160
Our Verdict
ASUS ROG Swift OLED PG27UCDM
Samsung Odyssey 3D G90XF S27FG900X
The ASUS ROG Swift OLED PG27UCDM and the Samsung Odyssey 3D are 27-inch 4k gaming monitors. The ASUS is the better choice for most people, as it has highlights that pop, displays deeper blacks in a dark room, and has more vivid colors. The Samsung is only a good option if you're very interested in playing a limited number of games with glasses-free 3D.
Variants
- ROG Swift OLED PG27UCDM (27")
- S27FG900X (27")
Check Price
27"
ROG Swift OLED PG27UCDM
SEE PRICE
Amazon.com
27"
S27FG900X
SEE PRICE
Amazon.com
27"
ROG Swift OLED PG27UCDM
SEE PRICE
BestBuy.com
27"
S27FG900X
SEE PRICE
Samsung.com
27"
ROG Swift OLED PG27UCDM
SEE PRICE
Walmart.com
27"
S27FG900X
SEE PRICE
Walmart.com
27"
ROG Swift OLED PG27UCDM
SEE PRICE
B&H
27"
S27FG900X
SEARCH
B&H
27"
S27FG900X
SEARCH
BestBuy.com
Main Differences for
PC Gaming
PC Gaming
Threshold
PC Gaming
9.1
7.1
Contrast
10
5.9
VRR Motion Performance
9.9
7.9
Local Dimming
10
2.5
Refresh Rate Compliance
9.7
7.5
CAD @ Max Refresh Rate
9.9
7.9
CAD @ 120Hz
9.9
7.9
Black Uniformity
10
4.8
Refresh Rate
8.0
7.5
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
9.0
8.0
Build Quality Picture
Ergonomics
8.5
8.0
Ergonomics Picture
Back Picture
Height Adjustment
4.3" (11.0 cm)
4.7" (12.0 cm)
Min Height To Top Of Panel
17.0" (43.2 cm)
15.8" (40.2 cm)
Tilt Range
-15° to 5°
-15° to 5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Both Ways
Swivel Range
-30° to 30°
No swivel
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
21.2" (53.8 cm)
9.6" (24.5 cm)
Base Depth
10.4" (26.3 cm)
8.1" (20.5 cm)
Thickness (With Display)
8.3" (21.0 cm)
4.9" (12.5 cm)
Weight (With Display)
16.6 lbs (7.5 kg)
16.6 lbs (7.6 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.1" (61.1 cm)
24.3" (61.6 cm)
Housing Height
14.1" (35.8 cm)
14.7" (37.4 cm)
Thickness (Without Stand)
2.6" (6.5 cm)
1.4" (3.5 cm)
Weight (Without Stand)
10.8 lbs (4.9 kg)
10.4 lbs (4.7 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
5.9
Checkerboard Picture
Native Contrast
Inf : 1
952 : 1
Contrast With Local Dimming
Inf : 1
971 : 1
Local Dimming
10
2.5
Local Dimming Video
Local Dimming
No
Yes
Backlight
No Backlight
Edge
SDR Brightness
7.8
8.3
Real Scene
317 cd/m²
450 cd/m²
Peak 2% Window
444 cd/m²
336 cd/m²
Peak 10% Window
443 cd/m²
498 cd/m²
Peak 25% Window
357 cd/m²
495 cd/m²
Peak 50% Window
303 cd/m²
486 cd/m²
Peak 100% Window
254 cd/m²
464 cd/m²
Sustained 2% Window
441 cd/m²
334 cd/m²
Sustained 10% Window
442 cd/m²
497 cd/m²
Sustained 25% Window
356 cd/m²
494 cd/m²
Sustained 50% Window
302 cd/m²
485 cd/m²
Sustained 100% Window
252 cd/m²
463 cd/m²
Automatic Brightness Limiting (ABL)
0.036
0.024
Minimum Brightness
14 cd/m²
20 cd/m²
HDR Brightness
6.8
6.8
EOTF
VESA DisplayHDR Certification
DisplayHDR TRUE BLACK 400
No Certification
Real Scene
412 cd/m²
403 cd/m²
Peak 2% Window
1,016 cd/m²
310 cd/m²
Peak 10% Window
460 cd/m²
470 cd/m²
Peak 25% Window
367 cd/m²
470 cd/m²
Peak 50% Window
310 cd/m²
460 cd/m²
Peak 100% Window
261 cd/m²
482 cd/m²
Sustained 2% Window
1,009 cd/m²
309 cd/m²
Sustained 10% Window
455 cd/m²
469 cd/m²
Sustained 25% Window
364 cd/m²
468 cd/m²
Sustained 50% Window
308 cd/m²
459 cd/m²
Sustained 100% Window
259 cd/m²
480 cd/m²
Automatic Brightness Limiting (ABL)
0.078
0.027
Gray Uniformity
9.0
7.5
50% Uniformity Picture
50% Std. Dev.
0.790%
3.693%
50% DSE
0.115%
0.161%
Black Uniformity
10
4.8
Native Black Uniformity Picture
Native Std. Dev.
0.313%
2.921%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
2.232%
Color Accuracy (Pre-Calibration)
9.2
8.1
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB Cal Mode
Original
sRGB Gamut Area xy
103.6%
103.0%
White Balance dE (Avg.)
1.22
4.31
Color Temperature (Avg.)
6,384 K
6,277 K
Gamma (Avg.)
2.19
2.31
Color dE (Avg.)
1.13
2.69
Contrast Setting
N/A
50
RGB Settings
Default
0-0-0
Gamma Setting
Default
0
Brightness Setting
80
50
Measured Brightness
113 cd/m²
537 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
8.6
9.5
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Racing Mode
Original
sRGB Gamut Area xy
108.9%
97.3%
White Balance dE (Avg.)
0.82
0.68
Color Temperature (Avg.)
6,510 K
6,518 K
Gamma (Avg.)
2.19
2.19
Color dE (Avg.)
1.08
0.72
Contrast Setting
80
48
RGB Settings
96-99-99
0-0-0
Gamma Setting
2.2
0
Brightness Setting
27
8
Measured Brightness
102 cd/m²
104 cd/m²
SDR Color Gamut
9.8
9.2
sRGB Color Gamut Picture
sRGB Coverage xy
100.0%
98.1%
sRGB Picture Mode
Racing Mode
Original
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
94.7%
82.8%
Adobe RGB Picture Mode
Racing Mode
Original
HDR Color Gamut
9.6
8.2
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
99.4%
91.1%
DCI-P3 Picture Mode
Console HDR
HDR Original
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
77.3%
65.5%
Rec. 2020 Picture Mode
Console HDR
HDR Original
HDR Color Volume
8.8
7.2
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
96.2%
63.4%
DCI-P3 Picture Mode
Console HDR
HDR Original
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
45.6%
26.9%
Rec. 2020 Picture Mode
Console HDR
HDR Original
Viewing Angle
9.9
6.9
Viewing Angle Video
Chroma Graph
Color Washout From Left
70°
30°
Color Washout From Right
70°
30°
Hue Graph
Color Shift From Left
68°
37°
Color Shift From Right
64°
40°
Lightness Graph
Brightness Loss From Left
70°
33°
Brightness Loss From Right
70°
33°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
70°
31°
Gamma Shift From Right
70°
34°
Text Clarity
9.0
7.0
ClearType On
ClearType Off
Pixel Type
QD-OLED
IPS
Pixels
Subpixel Layout
Triangular RGB
RGB
Direct Reflections
7.8
1.8
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
18.1%
86.0%
Screen Finish
Glossy
Glossy
Ambient Black Level Raise
5.5
7.5
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.00 cd/m²
0.04 cd/m²
Black Luminance @ 1000 lx
2.50 cd/m²
1.26 cd/m²
Total Reflected Light
9.2
7.1
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
3,632% ⋅ pixel
19,927% ⋅ pixel
Diffraction Artifacts
No
Yes
Gradient
9.8
9.6
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
8.0
7.5
Native Refresh Rate
240 Hz
165 Hz
Max Refresh Rate
240 Hz
165 Hz
Max Refresh Rate Over DP
240 Hz
165 Hz
Max Refresh Rate Over HDMI
240 Hz
165 Hz
Max Refresh Rate Over DP @ 10-bit
240 Hz
165 Hz
Max Refresh Rate Over HDMI @ 10-Bit
240 Hz
165 Hz
DSC Toggle
Yes
No
DSC Off Max Refresh Rate Over DP
240 Hz
N/A
DSC Off Max Refresh Rate Over HDMI
120 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
240 Hz
165 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
9.9
7.9
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
No OD Mode
Adaptive-Sync
Variable Overdrive Advertised
No
No
Avg. CAD
11
164
Best CAD
11
161
Worst CAD
12
174
Refresh Rate Compliance
9.7
7.5
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
92%
52%
Compliance @ 120 FPS
95%
61%
Compliance @ 60 FPS
97%
73%
CAD @ Max Refresh Rate
9.9
7.9
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD noodmode
0 to 31
OD adaptivesync
0 to 31
Recommended Overdrive Setting
No OD Mode
Faster
Avg. CAD
11
144
Best 10% CAD
5
78
Worst 10% CAD
29
247
Response Time @ Max Refresh Rate
First Response Time
0.2 ms
3.8 ms
Total Response Time
0.4 ms
6.8 ms
Recommended Overdrive Setting
No OD Mode
Faster
RGB Overshoot
2 RGB
7 RGB
Worst 10% RGB Overshoot
24 RGB
25 RGB
Worst 10% First Response Time
0.5 ms
6.3 ms
Worst 10% Total Response Time
2.0 ms
10.0 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
9.9
7.9
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD noodmode
0 to 31
OD adaptivesync
0 to 31
Recommended Overdrive Setting
No OD Mode
Standard
Avg. CAD
12
157
Best 10% CAD
5
89
Worst 10% CAD
30
224
Response Time @ 120Hz
Worst 10% First Response Time
0.5 ms
7.6 ms
RGB Overshoot
2 RGB
0 RGB
Total Response Time
0.4 ms
6.0 ms
First Response Time
0.2 ms
5.6 ms
Recommended Overdrive Setting
No OD Mode
Standard
Worst 10% Total Response Time
1.4 ms
9.3 ms
Worst 10% RGB Overshoot
23 RGB
5 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
9.9
7.6
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD noodmode
0 to 31
OD adaptivesync
0 to 31
Recommended Overdrive Setting
No OD Mode
Standard
Avg. CAD
11
174
Best 10% CAD
5
67
Worst 10% CAD
29
257
Response Time @ 60Hz
Recommended Overdrive Setting
No OD Mode
Standard
First Response Time
0.2 ms
6.9 ms
Total Response Time
0.3 ms
7.7 ms
RGB Overshoot
2 RGB
1 RGB
Worst 10% Total Response Time
1.4 ms
16.0 ms
Worst 10% First Response Time
0.5 ms
10.2 ms
Worst 10% RGB Overshoot
22 RGB
8 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
120 Hz
N/A
Minimum Frequency
120 Hz
N/A
Longest Pulse Width Brightness
127 cd/m²
N/A
Shortest Pulse Width Brightness
127 cd/m²
N/A
Pulse Width Control
No
No BFI
Pulse Phase Control
No
No BFI
Pulse Amplitude Control
Yes
No BFI
VRR At The Same Time
No
No BFI
VRR Flicker
5.7
7.8
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
4.8 RGB
1.9 RGB
Middle Gray Flicker
1.6 RGB
0.9 RGB
Light Gray Flicker
0.1 RGB
0.7 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
No
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
8.9
8.9
Native Resolution @ Max Hz
2.7 ms
3.8 ms
Native Resolution @ 120Hz
5.1 ms
4.9 ms
Native Resolution @ 60Hz
14.8 ms
9.1 ms
Backlight Strobing (BFI)
10.6 ms
N/A
Resolution
8.8
8.8
Native Resolution
3840 x 2160
3840 x 2160
Aspect Ratio
16:9
16:9
Megapixels
8.3 MP
8.3 MP
Pixel Density
166 PPI
164 PPI
PS5 Compatibility
10
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
10
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 2.1)
1 (DP 1.4)
DisplayPort Transmission Bandwidth
UHBR20 (80.00 Gbps)
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
No
Ethernet
No
No
HDR10
Yes
Yes
Dolby Vision
Yes
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
Yes
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 Swift OLED PG27UCDM
SEE PRICE
Amazon.com
27"
S27FG900X
SEE PRICE
Amazon.com
27"
ROG Swift OLED PG27UCDM
SEE PRICE
BestBuy.com
27"
S27FG900X
SEE PRICE
Samsung.com
27"
ROG Swift OLED PG27UCDM
SEE PRICE
Walmart.com
27"
S27FG900X
SEE PRICE
Walmart.com
27"
ROG Swift OLED PG27UCDM
SEE PRICE
B&H
27"
S27FG900X
SEARCH
B&H
27"
S27FG900X
SEARCH
BestBuy.com
ASUS ROG Swift OLED PG27UCDM
Samsung Odyssey 3D G90XF S27FG900X
Comments
ASUS ROG Swift OLED PG27UCDM vs Samsung Odyssey 3D G90XF S27FG900X: Main Discussion
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