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Products
LG 27GP850-B/27GP83B-B
ASUS ROG Strix XG27ACS
Tested using Methodology v2.1
Updated Jul 14, 2025 04:44 PM
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Amazon.comTested using Methodology v2.1
Updated Jul 21, 2025 02:12 PM
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Amazon.com
Max Refresh Rate180 Hz
Size27"
Pixel TypeIPS
Native Resolution2560 x 1440
Max Refresh Rate180 Hz
Size27"
Pixel TypeIPS
Native Resolution2560 x 1440
Our Verdict
LG 27GP850-B/27GP83B-B
ASUS ROG Strix XG27ACS
The LG 27GP850-B/27GP83B-B and the ASUS ROG Strix XG27ACS are both budget-friendly 1440p gaming monitors with a 180Hz refresh rate. They perform very similarly, but the ASUS has a few extra perks, like better ergonomics and a USB-C port with DisplayPort Alt Mode. Although they both have backlight strobing features, the ASUS supports ELMB-SYNC for it to work at the same time as VRR.
Variants
- 27GP850-B (27")
- 27GP83B-B (27")
- ROG Strix XG27ACS (27")
- ROG Strix XG27ACS-W (27")
Check Price
27"
27GP850-B
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ROG Strix XG27ACS
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27GP83B-B
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ROG Strix XG27ACS-W
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Finding storeMain Differences forPC Gaming
PC Gaming
Threshold
PC Gaming
7.2
7.3
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
7.0
8.0
Build Quality Picture
Ergonomics
7.5
9.0
Ergonomics Picture
Back Picture
Height Adjustment
4.3" (11.0 cm)
4.6" (11.8 cm)
Min Height To Top Of Panel
18.0" (45.8 cm)
15.2" (38.6 cm)
Tilt Range
-15° to 5°
-20° to 2.5°
Rotate Portrait/Landscape
Yes, Clockwise
Yes, Both Ways
Swivel Range
No swivel
-45° to 45°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
16.7" (42.5 cm)
10.7" (27.3 cm)
Base Depth
11.5" (29.3 cm)
8.6" (21.9 cm)
Thickness (With Display)
8.9" (22.6 cm)
6.7" (17.0 cm)
Weight (With Display)
13.7 lbs (6.2 kg)
14.6 lbs (6.6 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.2" (61.5 cm)
24.2" (61.5 cm)
Housing Height
14.4" (36.5 cm)
14.4" (36.7 cm)
Thickness (Without Stand)
2.0" (5.1 cm)
2.2" (5.5 cm)
Weight (Without Stand)
9.0 lbs (4.1 kg)
8.7 lbs (3.9 kg)
Borders Size (Bezels)
0.3" (0.8 cm)
0.3" (0.9 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Picture Quality
Contrast
5.6
6.2
Checkerboard Picture
Native Contrast
807 : 1
1,155 : 1
Contrast With Local Dimming
N/A
N/A
Local Dimming
0.0
0.0
Local Dimming Video
Local Dimming
No
No
Backlight
Edge
Edge
SDR Brightness
8.0
8.2
Real Scene
349 cd/m²
392 cd/m²
Peak 2% Window
364 cd/m²
412 cd/m²
Peak 10% Window
364 cd/m²
414 cd/m²
Peak 25% Window
365 cd/m²
414 cd/m²
Peak 50% Window
365 cd/m²
414 cd/m²
Peak 100% Window
365 cd/m²
414 cd/m²
Sustained 2% Window
364 cd/m²
411 cd/m²
Sustained 10% Window
364 cd/m²
413 cd/m²
Sustained 25% Window
364 cd/m²
413 cd/m²
Sustained 50% Window
365 cd/m²
414 cd/m²
Sustained 100% Window
365 cd/m²
414 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
22 cd/m²
36 cd/m²
HDR Brightness
7.1
6.9
EOTF
VESA DisplayHDR Certification
DisplayHDR 400 - 1.0/1.1
DisplayHDR 400 - 1.0/1.1
Real Scene
465 cd/m²
414 cd/m²
Peak 2% Window
471 cd/m²
436 cd/m²
Peak 10% Window
472 cd/m²
439 cd/m²
Peak 25% Window
473 cd/m²
439 cd/m²
Peak 50% Window
473 cd/m²
439 cd/m²
Peak 100% Window
472 cd/m²
439 cd/m²
Sustained 2% Window
470 cd/m²
436 cd/m²
Sustained 10% Window
471 cd/m²
438 cd/m²
Sustained 25% Window
472 cd/m²
438 cd/m²
Sustained 50% Window
472 cd/m²
438 cd/m²
Sustained 100% Window
472 cd/m²
438 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Horizontal Viewing Angle
8.4
8.0
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
45°
32°
Color Washout From Right
45°
31°
Horizontal Hue Graph
Color Shift From Left
52°
53°
Color Shift From Right
53°
56°
Horizontal Lightness Graph
Brightness Loss From Left
48°
44°
Brightness Loss From Right
49°
38°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
58°
60°
Gamma Shift From Right
57°
58°
Vertical Viewing Angle
6.3
6.5
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
30°
25°
Color Washout From Above
34°
27°
Vertical Hue Graph
Color Shift From Below
25°
28°
Color Shift From Above
39°
35°
Vertical Lightness Graph
Brightness Loss From Below
37°
28°
Brightness Loss From Above
40°
31°
Black Level Raise From Below
22°
70°
Black Level Raise From Above
37°
70°
Gamma Shift From Below
27°
26°
Gamma Shift From Above
34°
27°
Gray Uniformity
8.0
7.7
50% Uniformity Picture
50% Std. Dev.
2.607%
3.733%
50% DSE
0.147%
0.149%
Black Uniformity
5.7
6.8
Native Black Uniformity Picture
Native Std. Dev.
2.189%
1.479%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
8.5
9.3
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB
sRGB Mode
sRGB Gamut Area xy
101.4%
101.5%
White Balance dE (Avg.)
3.35
1.80
Color Temperature (Avg.)
5,950 K
6,422 K
Gamma (Avg.)
2.05
2.17
Color dE (Avg.)
2.54
0.99
Contrast Setting
70
N/A
RGB Settings
Default
Default
Gamma Setting
Default
Default
Brightness Setting
22
25
Measured Brightness
119 cd/m²
134 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.7
9.8
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Gamer 1
User Mode
sRGB Gamut Area xy
101.3%
101.0%
White Balance dE (Avg.)
0.64
0.53
Color Temperature (Avg.)
6,499 K
6,501 K
Gamma (Avg.)
2.18
2.18
Color dE (Avg.)
0.37
0.29
Contrast Setting
68
80
RGB Settings
50-50-47
100-96-91
Gamma Setting
Mode 2
2.2
Brightness Setting
21
17
Measured Brightness
99 cd/m²
101 cd/m²
SDR Color Gamut
9.6
9.5
sRGB Color Gamut Picture
sRGB Coverage xy
99.9%
100.0%
sRGB Picture Mode
Gamer 1
User Mode
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
88.1%
85.0%
Adobe RGB Picture Mode
Gamer 1
User Mode
HDR Color Gamut
8.8
8.2
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
95.6%
91.1%
DCI-P3 Picture Mode
Gamer 1
Console HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
70.4%
67.3%
Rec. 2020 Picture Mode
Gamer 1
Console HDR
HDR Color Volume
7.4
7.5
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
64.8%
67.3%
DCI-P3 Picture Mode
Gamer 1
Console HDR
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
29.1%
30.5%
Rec. 2020 Picture Mode
Gamer 1
Console HDR
Text Clarity
7.5
7.5
ClearType On
ClearType Off
Pixel Type
IPS
IPS
Pixels
Subpixel Layout
RGB
RGB
Direct Reflections
6.5
7.3
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
30.7%
21.9%
Screen Finish
Matte
Matte
Ambient Black Level Raise
8.4
6.9
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.43 cd/m²
0.35 cd/m²
Black Luminance @ 1000 lx
0.73
1.62 cd/m²
Total Reflected Light
5.9
6.4
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
32,808% ⋅ pixel
27,449% ⋅ pixel
Diffraction Artifacts
No
No
Gradient
9.6
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
7.7
7.7
Native Refresh Rate
165 Hz
180 Hz
Max Refresh Rate
180 Hz
180 Hz
Max Refresh Rate Over DP
180 Hz
180 Hz
Max Refresh Rate Over HDMI
144 Hz
144 Hz
Max Refresh Rate Over DP @ 10-bit
180 Hz
180 Hz
Max Refresh Rate Over HDMI @ 10-Bit
60 Hz
60 Hz
DSC Toggle
No
No
DSC Off Max Refresh Rate Over DP
N/A
N/A
DSC Off Max Refresh Rate Over HDMI
N/A
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
180 Hz
180 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
8.2
8.2
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Normal
Level 9
Variable Overdrive Advertised
No
Yes
Avg. CAD
151
144
Best CAD
150
125
Worst CAD
152
161
Refresh Rate Compliance
7.9
7.8
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
52%
52%
Compliance @ 120 FPS
65%
64%
Compliance @ 60 FPS
82%
79%
CAD @ Max Refresh Rate
8.2
8.2
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD fast
0 to 31
OD level0
0 to 31
Recommended Overdrive Setting
Fast
Level 9
Avg. CAD
131
125
Best 10% CAD
66
70
Worst 10% CAD
221
209
Response Time @ Max Refresh Rate
First Response Time
4.7 ms
3.6 ms
Total Response Time
5.5 ms
6.8 ms
Recommended Overdrive Setting
Fast
Level 9
RGB Overshoot
1 RGB
7 RGB
Worst 10% RGB Overshoot
6 RGB
15 RGB
Worst 10% First Response Time
9.7 ms
6.3 ms
Worst 10% Total Response Time
9.7 ms
9.5 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
8.0
8.0
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD fast
0 to 31
OD level0
0 to 31
Recommended Overdrive Setting
Fast
Level 9
Avg. CAD
142
143
Best 10% CAD
88
78
Worst 10% CAD
211
233
Response Time @ 120Hz
Worst 10% First Response Time
6.8 ms
6.8 ms
RGB Overshoot
7 RGB
4 RGB
Total Response Time
9.6 ms
7.5 ms
First Response Time
4.2 ms
4.7 ms
Recommended Overdrive Setting
Fast
Level 9
Worst 10% Total Response Time
11.7 ms
12.0 ms
Worst 10% RGB Overshoot
10 RGB
12 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
8.0
7.7
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD fast
0 to 31
OD level0
0 to 31
Recommended Overdrive Setting
Normal
Level 9
Avg. CAD
147
161
Best 10% CAD
79
86
Worst 10% CAD
227
267
Response Time @ 60Hz
Recommended Overdrive Setting
Normal
Level 9
First Response Time
5.6 ms
5.7 ms
Total Response Time
6.7 ms
8.6 ms
RGB Overshoot
1 RGB
2 RGB
Worst 10% Total Response Time
17.6 ms
19.5 ms
Worst 10% First Response Time
8.3 ms
7.7 ms
Worst 10% RGB Overshoot
6 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
Yes
Maximum Frequency
165 Hz
180 Hz
Minimum Frequency
120 Hz
80 Hz
Longest Pulse Width Brightness
136 cd/m²
247 cd/m²
Shortest Pulse Width Brightness
136 cd/m²
84 cd/m²
Pulse Width Control
No
Yes
Pulse Phase Control
No
Yes
Pulse Amplitude Control
Yes
No
VRR At The Same Time
No
Yes
VRR Flicker
8.2
8.1
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
1.0 RGB
1.2 RGB
Middle Gray Flicker
1.8 RGB
1.8 RGB
Light Gray Flicker
1.8 RGB
1.7 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.0
8.9
Native Resolution @ Max Hz
3.6 ms
4.1 ms
Native Resolution @ 120Hz
4.9 ms
5.7 ms
Native Resolution @ 60Hz
9.1 ms
10.0 ms
Backlight Strobing (BFI)
4.4 ms
4.9 ms
Resolution
7.5
7.5
Native Resolution
2560 x 1440
2560 x 1440
Aspect Ratio
16:9
16:9
Megapixels
3.7 MP
3.7 MP
Pixel Density
109 PPI
109 PPI
PS5 Compatibility
4.9
6.6
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
7.1
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
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 2.0)
1 (HDMI 2.0)
HDMI 2.1 Bandwidth
No HDMI 2.1
No HDMI 2.1
Daisy Chaining
No
No
3.5mm Audio Out
Yes
Yes
Ethernet
No
No
HDR10
Yes
Yes
Dolby Vision
No
No
USB
USB-A Ports
2
0
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
No USB-A Ports
USB-B Upstream Port
Yes
No
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
5W
USB-C DisplayPort Alt Mode
No USB-C Ports
Yes
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
No
No
Multiple Input Display
No
No
KVM Switch
No
No
Smart OS
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
27GP850-B
Searching
Finding store27"
ROG Strix XG27ACS
Searching
Finding store27"
27GP83B-B
Searching
Finding store27"
ROG Strix XG27ACS-W
Searching
Finding store
LG 27GP850-B/27GP83B-B
ASUS ROG Strix XG27ACS
Comments
LG 27GP850-B/27GP83B-B vs ASUS ROG Strix XG27ACS: Main Discussion
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