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Products
Samsung Odyssey 3D G90XF S27FG900X
ASUS ROG Swift OLED PG27UCDM
Tested using Methodology v2.1
Updated Jun 20, 2025 01:52 PM
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Amazon.comTested using Methodology v2.1
Updated Jul 10, 2025 03:23 PM
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Amazon.com
Max Refresh Rate165 Hz
Size27"
Pixel TypeIPS
Native Resolution3840 x 2160
Max Refresh Rate240 Hz
Size27"
Pixel TypeQD-OLED
Native Resolution3840 x 2160
Our Verdict
Samsung Odyssey 3D G90XF S27FG900X
ASUS ROG Swift OLED PG27UCDM
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
- S27FG900X (27")
- ROG Swift OLED PG27UCDM (27")
Check Price
27"
S27FG900X
SEE PRICE
Amazon.com27"
ROG Swift OLED PG27UCDM
SEE PRICE
Amazon.com27"
S27FG900X
SEE PRICE
BestBuy.com27"
ROG Swift OLED PG27UCDM
SEE PRICE
BestBuy.com27"
S27FG900X
SEE PRICE
Walmart.com27"
ROG Swift OLED PG27UCDM
SEE PRICE
Walmart.comMain Differences forPC Gaming
PC Gaming
Threshold
PC Gaming
7.1
9.1
Contrast
5.9
10
VRR Motion Performance
7.9
9.9
Local Dimming
2.5
10
Refresh Rate Compliance
7.5
9.7
CAD @ Max Refresh Rate
7.9
9.9
CAD @ 120Hz
7.9
9.9
Black Uniformity
4.8
10
Refresh Rate
7.5
8.0
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
8.0
9.0
Build Quality Picture
Ergonomics
8.0
8.5
Ergonomics Picture
Back Picture
Height Adjustment
4.7" (12.0 cm)
4.3" (11.0 cm)
Min Height To Top Of Panel
15.8" (40.2 cm)
17.0" (43.2 cm)
Tilt Range
-15° to 5°
-15° to 5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Both Ways
Swivel Range
No swivel
-30° to 30°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
9.6" (24.5 cm)
21.2" (53.8 cm)
Base Depth
8.1" (20.5 cm)
10.4" (26.3 cm)
Thickness (With Display)
4.9" (12.5 cm)
8.3" (21.0 cm)
Weight (With Display)
16.6 lbs (7.6 kg)
16.6 lbs (7.5 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.3" (61.6 cm)
24.1" (61.1 cm)
Housing Height
14.7" (37.4 cm)
14.1" (35.8 cm)
Thickness (Without Stand)
1.4" (3.5 cm)
2.6" (6.5 cm)
Weight (Without Stand)
10.4 lbs (4.7 kg)
10.8 lbs (4.9 kg)
Borders Size (Bezels)
0.3" (0.8 cm)
0.5" (1.2 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Picture Quality
Contrast
5.9
10
Checkerboard Picture
Native Contrast
952 : 1
Inf : 1
Contrast With Local Dimming
971 : 1
Inf : 1
Local Dimming
2.5
10
Local Dimming Video
Local Dimming
Yes
No
Backlight
Edge
No Backlight
SDR Brightness
8.3
7.8
Real Scene
450 cd/m²
317 cd/m²
Peak 2% Window
336 cd/m²
444 cd/m²
Peak 10% Window
498 cd/m²
443 cd/m²
Peak 25% Window
495 cd/m²
357 cd/m²
Peak 50% Window
486 cd/m²
303 cd/m²
Peak 100% Window
464 cd/m²
254 cd/m²
Sustained 2% Window
334 cd/m²
441 cd/m²
Sustained 10% Window
497 cd/m²
442 cd/m²
Sustained 25% Window
494 cd/m²
356 cd/m²
Sustained 50% Window
485 cd/m²
302 cd/m²
Sustained 100% Window
463 cd/m²
252 cd/m²
Automatic Brightness Limiting (ABL)
0.024
0.036
Minimum Brightness
20 cd/m²
14 cd/m²
HDR Brightness
6.8
6.8
EOTF
VESA DisplayHDR Certification
No Certification
DisplayHDR TRUE BLACK 400
Real Scene
403 cd/m²
412 cd/m²
Peak 2% Window
310 cd/m²
1,016 cd/m²
Peak 10% Window
470 cd/m²
460 cd/m²
Peak 25% Window
470 cd/m²
367 cd/m²
Peak 50% Window
460 cd/m²
310 cd/m²
Peak 100% Window
482 cd/m²
261 cd/m²
Sustained 2% Window
309 cd/m²
1,009 cd/m²
Sustained 10% Window
469 cd/m²
455 cd/m²
Sustained 25% Window
468 cd/m²
364 cd/m²
Sustained 50% Window
459 cd/m²
308 cd/m²
Sustained 100% Window
480 cd/m²
259 cd/m²
Automatic Brightness Limiting (ABL)
0.027
0.078
Horizontal Viewing Angle
6.9
9.9
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
30°
70°
Color Washout From Right
30°
70°
Horizontal Hue Graph
Color Shift From Left
37°
68°
Color Shift From Right
40°
64°
Horizontal Lightness Graph
Brightness Loss From Left
33°
70°
Brightness Loss From Right
33°
70°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
31°
70°
Gamma Shift From Right
34°
70°
Vertical Viewing Angle
7.0
9.9
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
30°
70°
Color Washout From Above
28°
70°
Vertical Hue Graph
Color Shift From Below
35°
61°
Color Shift From Above
39°
68°
Vertical Lightness Graph
Brightness Loss From Below
32°
70°
Brightness Loss From Above
31°
70°
Black Level Raise From Below
70°
70°
Black Level Raise From Above
70°
70°
Gamma Shift From Below
39°
70°
Gamma Shift From Above
38°
70°
Gray Uniformity
7.5
9.0
50% Uniformity Picture
50% Std. Dev.
3.693%
0.790%
50% DSE
0.161%
0.115%
Black Uniformity
4.8
10
Native Black Uniformity Picture
Native Std. Dev.
2.921%
0.313%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
2.232%
N/A
Color Accuracy (Pre-Calibration)
8.1
9.2
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Original
sRGB Cal Mode
sRGB Gamut Area xy
103.0%
103.6%
White Balance dE (Avg.)
4.31
1.22
Color Temperature (Avg.)
6,277 K
6,384 K
Gamma (Avg.)
2.31
2.19
Color dE (Avg.)
2.69
1.13
Contrast Setting
50
N/A
RGB Settings
0-0-0
Default
Gamma Setting
0
Default
Brightness Setting
50
80
Measured Brightness
537 cd/m²
113 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.5
8.6
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Original
Racing Mode
sRGB Gamut Area xy
97.3%
108.9%
White Balance dE (Avg.)
0.68
0.82
Color Temperature (Avg.)
6,518 K
6,510 K
Gamma (Avg.)
2.19
2.19
Color dE (Avg.)
0.72
1.08
Contrast Setting
48
80
RGB Settings
0-0-0
96-99-99
Gamma Setting
0
2.2
Brightness Setting
8
27
Measured Brightness
104 cd/m²
102 cd/m²
SDR Color Gamut
9.2
9.8
sRGB Color Gamut Picture
sRGB Coverage xy
98.1%
100.0%
sRGB Picture Mode
Original
Racing Mode
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
82.8%
94.7%
Adobe RGB Picture Mode
Original
Racing Mode
HDR Color Gamut
8.2
9.6
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
91.1%
99.4%
DCI-P3 Picture Mode
HDR Original
Console HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
65.5%
77.3%
Rec. 2020 Picture Mode
HDR Original
Console HDR
HDR Color Volume
7.2
8.8
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
63.4%
96.2%
DCI-P3 Picture Mode
HDR Original
Console HDR
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
26.9%
45.6%
Rec. 2020 Picture Mode
HDR Original
Console HDR
Text Clarity
7.0
9.0
ClearType On
ClearType Off
Pixel Type
IPS
QD-OLED
Pixels
Subpixel Layout
RGB
Triangular RGB
Direct Reflections
1.8
7.8
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
86.0%
18.1%
Screen Finish
Glossy
Glossy
Ambient Black Level Raise
7.5
5.5
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.04 cd/m²
0.00 cd/m²
Black Luminance @ 1000 lx
1.26
2.50 cd/m²
Total Reflected Light
7.1
9.2
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
19,927% ⋅ pixel
3,632% ⋅ pixel
Diffraction Artifacts
Yes
No
Gradient
9.6
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
7.5
8.0
Native Refresh Rate
165 Hz
240 Hz
Max Refresh Rate
165 Hz
240 Hz
Max Refresh Rate Over DP
165 Hz
240 Hz
Max Refresh Rate Over HDMI
165 Hz
240 Hz
Max Refresh Rate Over DP @ 10-bit
165 Hz
240 Hz
Max Refresh Rate Over HDMI @ 10-Bit
165 Hz
240 Hz
DSC Toggle
No
Yes
DSC Off Max Refresh Rate Over DP
N/A
240 Hz
DSC Off Max Refresh Rate Over HDMI
N/A
120 Hz
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
165 Hz
240 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
7.9
9.9
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Adaptive-Sync
No OD Mode
Variable Overdrive Advertised
No
No
Avg. CAD
164
11
Best CAD
161
11
Worst CAD
174
12
Refresh Rate Compliance
7.5
9.7
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
52%
92%
Compliance @ 120 FPS
61%
95%
Compliance @ 60 FPS
73%
97%
CAD @ Max Refresh Rate
7.9
9.9
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD adaptivesync
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
Faster
No OD Mode
Avg. CAD
144
11
Best 10% CAD
78
5
Worst 10% CAD
247
29
Response Time @ Max Refresh Rate
First Response Time
3.8 ms
0.2 ms
Total Response Time
6.8 ms
0.4 ms
Recommended Overdrive Setting
Faster
No OD Mode
RGB Overshoot
7 RGB
2 RGB
Worst 10% RGB Overshoot
25 RGB
24 RGB
Worst 10% First Response Time
6.3 ms
0.5 ms
Worst 10% Total Response Time
10.0 ms
2.0 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
7.9
9.9
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD adaptivesync
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
Standard
No OD Mode
Avg. CAD
157
12
Best 10% CAD
89
5
Worst 10% CAD
224
30
Response Time @ 120Hz
Worst 10% First Response Time
7.6 ms
0.5 ms
RGB Overshoot
0 RGB
2 RGB
Total Response Time
6.0 ms
0.4 ms
First Response Time
5.6 ms
0.2 ms
Recommended Overdrive Setting
Standard
No OD Mode
Worst 10% Total Response Time
9.3 ms
1.4 ms
Worst 10% RGB Overshoot
5 RGB
23 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
7.6
9.9
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD adaptivesync
0 to 31
OD noodmode
0 to 31
Recommended Overdrive Setting
Standard
No OD Mode
Avg. CAD
174
11
Best 10% CAD
67
5
Worst 10% CAD
257
29
Response Time @ 60Hz
Recommended Overdrive Setting
Standard
No OD Mode
First Response Time
6.9 ms
0.2 ms
Total Response Time
7.7 ms
0.3 ms
RGB Overshoot
1 RGB
2 RGB
Worst 10% Total Response Time
16.0 ms
1.4 ms
Worst 10% First Response Time
10.2 ms
0.5 ms
Worst 10% RGB Overshoot
8 RGB
22 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
Yes
Maximum Frequency
N/A
120 Hz
Minimum Frequency
N/A
120 Hz
Longest Pulse Width Brightness
N/A
127 cd/m²
Shortest Pulse Width Brightness
N/A
127 cd/m²
Pulse Width Control
No BFI
No
Pulse Phase Control
No BFI
No
Pulse Amplitude Control
No BFI
Yes
VRR At The Same Time
No BFI
No
VRR Flicker
7.8
5.7
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
1.9 RGB
4.8 RGB
Middle Gray Flicker
0.9 RGB
1.6 RGB
Light Gray Flicker
0.7 RGB
0.1 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
No
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
8.9
8.9
Native Resolution @ Max Hz
3.8 ms
2.7 ms
Native Resolution @ 120Hz
4.9 ms
5.1 ms
Native Resolution @ 60Hz
9.1 ms
14.8 ms
Backlight Strobing (BFI)
N/A
10.6 ms
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
164 PPI
166 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 1.4)
1 (DP 2.1)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
UHBR20 (80.00 Gbps)
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.1)
2 (HDMI 2.1)
HDMI 2.1 Bandwidth
48Gbps (FRL 12x4)
48Gbps (FRL 12x4)
Daisy Chaining
No
No
3.5mm Audio Out
No
Yes
Ethernet
No
No
HDR10
Yes
Yes
Dolby Vision
No
Yes
USB
USB-A Ports
2
3
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
0
1
USB-C Upstream
No USB-C Ports
Yes
USB-C Rated Speed
No USB-C Ports
5Gbps (USB 3.2 Gen 1)
USB-C Power Delivery
No USB-C Ports
90W
USB-C DisplayPort Alt Mode
No USB-C Ports
Yes
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
Yes
No
RGB Illumination
Presets
Controllable
Multiple Input Display
PIP
PIP + PBP
KVM Switch
No
Yes
Smart OS
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
S27FG900X
SEE PRICE
Amazon.com27"
ROG Swift OLED PG27UCDM
SEE PRICE
Amazon.com27"
S27FG900X
SEE PRICE
BestBuy.com27"
ROG Swift OLED PG27UCDM
SEE PRICE
BestBuy.com27"
S27FG900X
SEE PRICE
Walmart.com27"
ROG Swift OLED PG27UCDM
SEE PRICE
Walmart.com
Samsung Odyssey 3D G90XF S27FG900X
ASUS ROG Swift OLED PG27UCDM
Comments
ASUS ROG Swift OLED PG27UCDM vs Samsung Odyssey 3D G90XF S27FG900X: Main Discussion
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