Products
Samsung Odyssey OLED G85SB S34BG85
ASUS ROG Swift OLED PG27AQDM
Tested using Methodology v2.0.1
Updated Nov 17, 2025 08:07 PM
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Tested using Methodology v2.1.1
Updated Nov 07, 2025 02:27 PM
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Max Refresh Rate
175 Hz
Size
34"
Pixel Type
QD-OLED
Native Resolution
3440 x 1440
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
OLED
Native Resolution
2560 x 1440
Our Verdict
Samsung Odyssey OLED G85SB S34BG85
ASUS ROG Swift OLED PG27AQDM
The Samsung Odyssey OLED G85SB S34BG85 and the ASUS ROG Swift OLED PG27AQDM are different types of OLED displays. The Samsung is an ultrawide monitor with a larger screen, and it uses extra quantum dot technology to display a wider range of colors that are brighter and more vivid than on the ASUS. The Samsung also has a built-in smart system, making it easier to stream your favorite content without the need for a PC. The ASUS also gets brighter in HDR, so small highlights pop more. The ASUS also has a higher 240Hz refresh rate, which makes it ideal for competitive gamers.
Variants
- LS34BG850SNXZA (34")
- ROG Swift OLED PG27AQDM (27")
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34"
LS34BG850SNXZA
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27"
ROG Swift OLED PG27AQDM
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34"
LS34BG850SNXZA
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27"
ROG Swift OLED PG27AQDM
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34"
LS34BG850SNXZA
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27"
ROG Swift OLED PG27AQDM
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34"
LS34BG850SNXZA
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27"
ROG Swift OLED PG27AQDM
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34"
LS34BG850SNXZA
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Main Differences for
PC Gaming
PC Gaming
Threshold
PC Gaming
8.9
9.0
Full Comparison
Design
Style
Design Picture
Curved
Yes
No
Curve Radius
1800R
Not Curved
Build Quality
8.5
9.0
Build Quality Picture
Ergonomics
6.7
8.7
Ergonomics Picture
Back Picture
Height Adjustment
4.7" (12.0 cm)
4.3" (10.8 cm)
Min Height To Top Of Panel
15.5" (39.3 cm)
16.9" (42.8 cm)
Tilt Range
-20° to 2.5°
-17.5° to 5°
Rotate Portrait/Landscape
No
Yes, Both Ways
Swivel Range
No swivel
-30° to 30°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
7.2" (18.2 cm)
21.2" (53.9 cm)
Base Depth
7.6" (19.3 cm)
10.4" (26.5 cm)
Thickness (With Display)
5.3" (13.5 cm)
9.0" (22.8 cm)
Weight (With Display)
16.7 lbs (7.6 kg)
15.2 lbs (6.9 kg)
Display
Display Picture
Size
34"
27"
Housing Width
32.1" (81.5 cm)
23.8" (60.5 cm)
Housing Height
14.1" (35.7 cm)
13.9" (35.2 cm)
Thickness (Without Stand)
2.2" (5.5 cm)
2.0" (5.0 cm)
Weight (Without Stand)
12.2 lbs (5.5 kg)
9.2 lbs (4.2 kg)
Borders Size (Bezels)
0.4" (1.1 cm)
0.3" (0.7 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
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
6.6
6.6
Real Scene
230 cd/m²
238 cd/m²
Peak 2% Window
249 cd/m²
240 cd/m²
Peak 10% Window
242 cd/m²
244 cd/m²
Peak 25% Window
243 cd/m²
247 cd/m²
Peak 50% Window
242 cd/m²
228 cd/m²
Peak 100% Window
243 cd/m²
163 cd/m²
Sustained 2% Window
247 cd/m²
230 cd/m²
Sustained 10% Window
240 cd/m²
242 cd/m²
Sustained 25% Window
241 cd/m²
246 cd/m²
Sustained 50% Window
240 cd/m²
227 cd/m²
Sustained 100% Window
241 cd/m²
162 cd/m²
Automatic Brightness Limiting (ABL)
0.002
0.028
Minimum Brightness
61 cd/m²
13 cd/m²
HDR Brightness
6.6
7.8
EOTF
VESA DisplayHDR Certification
DisplayHDR TRUE BLACK 400
No Certification
Real Scene
372 cd/m²
739 cd/m²
Peak 2% Window
985 cd/m²
904 cd/m²
Peak 10% Window
456 cd/m²
923 cd/m²
Peak 25% Window
360 cd/m²
480 cd/m²
Peak 50% Window
302 cd/m²
200 cd/m²
Peak 100% Window
255 cd/m²
197 cd/m²
Sustained 2% Window
977 cd/m²
878 cd/m²
Sustained 10% Window
454 cd/m²
904 cd/m²
Sustained 25% Window
357 cd/m²
476 cd/m²
Sustained 50% Window
300 cd/m²
199 cd/m²
Sustained 100% Window
252 cd/m²
196 cd/m²
Automatic Brightness Limiting (ABL)
0.078
0.109
Gray Uniformity
8.8
8.8
50% Uniformity Picture
50% Std. Dev.
0.784%
1.261%
50% DSE
0.125%
0.120%
Black Uniformity
10
10
Native Black Uniformity Picture
Native Std. Dev.
0.433%
0.186%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Vertical Viewing Angle
9.9
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
70°
Color Washout From Above
70°
Vertical Hue Graph
Color Shift From Below
70°
Color Shift From Above
70°
Vertical Lightness Graph
Brightness Loss From Below
70°
Brightness Loss From Above
70°
Black Level Raise From Below
61°
Black Level Raise From Above
61°
Gamma Shift From Below
70°
Gamma Shift From Above
70°
Color Accuracy (Pre-Calibration)
8.0
8.9
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Game (Custom)
sRGB
sRGB Gamut Area xy
101.7%
101.4%
White Balance dE (Avg.)
4.86
1.89
Color Temperature (Avg.)
6,759 K
6,544 K
Gamma (Avg.)
2.16
2.04
Color dE (Avg.)
3.04
2.05
Contrast Setting
50
N/A
RGB Settings
Gain (0,0,0), Offset (0,0,0)
Default
Gamma Setting
2.2
2.2
Brightness Setting
32
100
Measured Brightness
183 cd/m²
255 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
8.5
8.9
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Game (Custom)
User Mode
sRGB Gamut Area xy
108.9%
106.8%
White Balance dE (Avg.)
0.72
0.56
Color Temperature (Avg.)
6,470 K
6,528 K
Gamma (Avg.)
2.20
2.18
Color dE (Avg.)
1.42
1.16
Contrast Setting
50
60
RGB Settings
Gain (6,-7,1), Offset (2,2,1)
98-93-79
Gamma Setting
2.2
2.2
Brightness Setting
3
46
Measured Brightness
101 cd/m²
100 cd/m²
SDR Color Gamut
9.7
9.7
sRGB Color Gamut Picture
sRGB Coverage xy
99.3%
100.0%
sRGB Picture Mode
Game (Custom)
User Mode
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
94.1%
90.6%
Adobe RGB Picture Mode
Game (Custom)
User Mode
HDR Color Gamut
9.6
8.5
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
99.6%
93.8%
DCI-P3 Picture Mode
Game (Custom)
Asus Gaming HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
79.9%
67.3%
Rec. 2020 Picture Mode
Game (Custom)
Asus Gaming HDR
HDR Color Volume
8.9
7.8
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
97.1%
75.9%
DCI-P3 Picture Mode
Game (Custom)
Asus Gaming HDR
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
47.2%
32.6%
Rec. 2020 Picture Mode
Game (Custom)
Asus Gaming HDR
Viewing Angle
10
9.8
Viewing Angle Video
Chroma Graph
Color Washout From Left
70°
70°
Color Washout From Right
70°
70°
Hue Graph
Color Shift From Left
70°
51°
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
6.5
ClearType On
ClearType Off
Pixel Type
QD-OLED
OLED
Pixels
Subpixel Layout
Triangular RGB
RWBG
Direct Reflections
8.1
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
15.8%
Screen Finish
Glossy
Matte
Reflections
9.4
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Glossy
Matte
Total Reflections
1.4%
Indirect Reflections
0.9%
Calculated Direct Reflections
0.5%
Ambient Black Level Raise
8.2
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.00 cd/m²
Black Luminance @ 1000 lx
0.86 cd/m²
Total Reflected Light
8.1
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
15,616% ⋅ pixel
Diffraction Artifacts
No
Gradient
9.7
9.6
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
7.6
8.0
Native Refresh Rate
175 Hz
240 Hz
Max Refresh Rate
175 Hz
240 Hz
Max Refresh Rate Over DP
175 Hz
240 Hz
Max Refresh Rate Over HDMI
175 Hz
120 Hz
Max Refresh Rate Over DP @ 10-bit
175 Hz
240 Hz
Max Refresh Rate Over HDMI @ 10-Bit
175 Hz
60 Hz
DSC Toggle
No
DSC Off Max Refresh Rate Over DP
N/A
DSC Off Max Refresh Rate Over HDMI
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (Tested)
Compatible (Tested)
VRR Maximum
175 Hz
240 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
8
7
Best CAD
8
7
Worst CAD
8
7
Refresh Rate Compliance
9.6
9.7
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
94%
94%
Compliance @ 120 FPS
95%
96%
Compliance @ 60 FPS
95%
97%
CAD @ Max Refresh Rate
9.9
9.9
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD no
0 to 31
OD no
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
8
7
Best 10% CAD
4
3
Worst 10% CAD
15
12
Response Time @ Max Refresh Rate
First Response Time
0.2 ms
0.2 ms
Total Response Time
0.2 ms
0.2 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
1.2 ms
0.3 ms
Worst 10% Total Response Time
1.2 ms
0.3 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 no
0 to 31
OD no
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
9
9
Best 10% CAD
4
4
Worst 10% CAD
16
14
Response Time @ 120Hz
Worst 10% First Response Time
1.3 ms
0.4 ms
RGB Overshoot
0 RGB
0 RGB
Total Response Time
0.3 ms
0.2 ms
First Response Time
0.3 ms
0.2 ms
Recommended Overdrive Setting
No OD Mode
No OD Mode
Worst 10% Total Response Time
1.3 ms
0.4 ms
Worst 10% RGB Overshoot
0 RGB
0 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 no
0 to 31
OD no
0 to 31
Recommended Overdrive Setting
No OD Mode
No OD Mode
Avg. CAD
14
16
Best 10% CAD
6
7
Worst 10% CAD
23
23
Response Time @ 60Hz
Recommended Overdrive Setting
No OD Mode
No OD Mode
First Response Time
0.5 ms
0.3 ms
Total Response Time
0.5 ms
0.3 ms
RGB Overshoot
0 RGB
0 RGB
Worst 10% Total Response Time
2.5 ms
0.6 ms
Worst 10% First Response Time
2.5 ms
0.6 ms
Worst 10% RGB Overshoot
N/A
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)
Yes
No BFI
Maximum Frequency
60 Hz
N/A
Minimum Frequency
60 Hz
N/A
Longest Pulse Width Brightness
137 cd/m²
N/A
Shortest Pulse Width Brightness
137 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
5.9
5.3
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
4.4 RGB
6.1 RGB
Middle Gray Flicker
1.0 RGB
1.7 RGB
Light Gray Flicker
0.8 RGB
0.8 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
No
No
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
8.4
9.1
Native Resolution @ Max Hz
3.5 ms
2.5 ms
Native Resolution @ 120Hz
5.0 ms
4.4 ms
Native Resolution @ 60Hz
9.6 ms
8.8 ms
Backlight Strobing (BFI)
55.0 ms
N/A
Resolution
7.7
7.5
Native Resolution
3440 x 1440
2560 x 1440
Aspect Ratio
21:9
16:9
Megapixels
5.0 MP
3.7 MP
Pixel Density
110 PPI
109 PPI
PS5 Compatibility
7.1
7.1
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
No
No
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
6.6
7.1
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
No
No
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
Inputs
Inputs 1
Inputs 2
DisplayPort
No
1 (DP 1.4)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
No DisplayPort 2.1
Mini DisplayPort
1 (DP 1.4)
No
DVI
No
HDMI
1 (Micro-HDMI)
2 (HDMI 2.0)
VGA
No
HDMI 2.1 Bandwidth
40Gbps (FRL 10x4)
No HDMI 2.1
Daisy Chaining
No
No
3.5mm Audio Out
No
Yes
3.5mm Audio In
No
3.5mm Microphone In
No
Ethernet
No
HDR10
Yes
Yes
Dolby Vision
No
USB
USB-A Ports
0
2
USB-A Rated Speed
No USB-A Ports
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
No
Yes
USB-C Ports
2
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
65W
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
Yes
No
HDR10
Yes
Yes
RGB Illumination
Controllable
Controllable
Multiple Input Display
No
No
KVM Switch
No
No
Smart OS
No
On-Screen Display (OSD)
OSD Picture
Check Price
34"
LS34BG850SNXZA
SEE PRICE
Amazon.com
27"
ROG Swift OLED PG27AQDM
SEE PRICE
Amazon.com
34"
LS34BG850SNXZA
SEE PRICE
Samsung.com
27"
ROG Swift OLED PG27AQDM
SEE PRICE
B&H
34"
LS34BG850SNXZA
SEE PRICE
Walmart.com
27"
ROG Swift OLED PG27AQDM
SEARCH
BestBuy.com
34"
LS34BG850SNXZA
SEARCH
B&H
27"
ROG Swift OLED PG27AQDM
SEARCH
Walmart.com
34"
LS34BG850SNXZA
SEARCH
BestBuy.com
Samsung Odyssey OLED G85SB S34BG85
ASUS ROG Swift OLED PG27AQDM
Comments
Samsung Odyssey OLED G85SB S34BG85 vs ASUS ROG Swift OLED PG27AQDM: Main Discussion
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