Products
LG 27GN750-B
Dell Alienware AW2521HF
Tested using Methodology v1.2
Updated Jun 07, 2024 07:17 PM
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Amazon.com
Tested using Methodology v1.2
Updated Jul 02, 2024 11:22 PM
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Amazon.com
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
IPS
Variable Refresh Rate
Yes
HDR10
Yes
Native Resolution
1920 x 1080
Max Refresh Rate
240 Hz
Size
25"
Pixel Type
IPS
Variable Refresh Rate
Yes
HDR10
No
Native Resolution
1920 x 1080
Our Verdict
LG 27GN750-B
Dell Alienware AW2521HF
The LG 27GN750-B and the Dell Alienware AW25212HF are similar monitors overall, but the Dell is slightly better for gaming. The Dell has a better response time both at its max refresh rate and at 60Hz, it handles reflections better, and its ergonomics are better. The LG is bigger and it supports HDR10, although content in that mode doesn't look much different from SDR.
Variants
- 27GN750-B (27")
- Alienware AW2521HF (25")
Check Price
27"
27GN750-B
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Amazon.com
25"
Alienware AW2521HF
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Amazon.com
27"
27GN750-B
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LG.com
25"
Alienware AW2521HF
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Walmart.com
27"
27GN750-B
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Walmart.com
25"
Alienware AW2521HF
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27"
27GN750-B
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25"
Alienware AW2521HF
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27"
27GN750-B
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.4
7.1
Ergonomics
7.1
8.9
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
8.5
Build Quality Picture
Ergonomics
7.1
8.9
Ergonomics Picture
Back Picture
Height Adjustment
4.3" (11.0 cm)
4.9" (12.5 cm)
Tilt Range
-15° to 5°
-20° to 5°
Rotate Portrait/Landscape
Yes, Clockwise
Yes, Both Ways
Swivel Range
No swivel
-20° to 20°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.7" (47.5 cm)
18.2" (46.3 cm)
Base Depth
9.4" (24.0 cm)
10.1" (25.7 cm)
Thickness (With Display)
7.7" (19.5 cm)
8.9" (22.5 cm)
Weight (With Display)
13.0 lbs (5.9 kg)
15.0 lbs (6.8 kg)
Display
Display Picture
Size
27"
25"
Housing Width
24.2" (61.5 cm)
21.9" (55.7 cm)
Housing Height
14.4" (36.5 cm)
13.0" (32.9 cm)
Thickness (Without Stand)
2.1" (5.4 cm)
3.0" (7.7 cm)
Weight (Without Stand)
8.8 lbs (4.0 kg)
7.9 lbs (3.6 kg)
Borders Size (Bezels)
0.3" (0.8 cm)
0.3" (0.7 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Picture Quality
Contrast
6.0
6.3
Checkerboard Picture
Native Contrast
1,032 : 1
1,198 : 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
8.1
8.2
Real Scene
351 cd/m²
406 cd/m²
Peak 2% Window
377 cd/m²
409 cd/m²
Peak 10% Window
378 cd/m²
410 cd/m²
Peak 25% Window
378 cd/m²
410 cd/m²
Peak 50% Window
378 cd/m²
411 cd/m²
Peak 100% Window
378 cd/m²
411 cd/m²
Sustained 2% Window
377 cd/m²
408 cd/m²
Sustained 10% Window
378 cd/m²
410 cd/m²
Sustained 25% Window
378 cd/m²
410 cd/m²
Sustained 50% Window
378 cd/m²
410 cd/m²
Sustained 100% Window
378 cd/m²
411 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
52 cd/m²
32 cd/m²
HDR Brightness
6.6
0.0
EOTF
VESA DisplayHDR Certification
No Certification
No Certification
Real Scene
370 cd/m²
N/A
Peak 2% Window
398 cd/m²
N/A
Peak 10% Window
398 cd/m²
N/A
Peak 25% Window
399 cd/m²
N/A
Peak 50% Window
398 cd/m²
N/A
Peak 100% Window
441 cd/m²
N/A
Sustained 2% Window
396 cd/m²
N/A
Sustained 10% Window
397 cd/m²
N/A
Sustained 25% Window
397 cd/m²
N/A
Sustained 50% Window
397 cd/m²
N/A
Sustained 100% Window
398 cd/m²
N/A
Automatic Brightness Limiting (ABL)
0.000
N/A
Horizontal Viewing Angle
8.3
8.4
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
44°
45°
Color Washout From Right
46°
45°
Horizontal Hue Graph
Color Shift From Left
50°
58°
Color Shift From Right
51°
57°
Horizontal Lightness Graph
Brightness Loss From Left
47°
46°
Brightness Loss From Right
49°
46°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
56°
58°
Gamma Shift From Right
58°
57°
Vertical Viewing Angle
6.5
7.0
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
32°
31°
Color Washout From Above
33°
31°
Vertical Hue Graph
Color Shift From Below
31°
39°
Color Shift From Above
34°
42°
Vertical Lightness Graph
Brightness Loss From Below
37°
35°
Brightness Loss From Above
38°
35°
Black Level Raise From Below
52°
70°
Black Level Raise From Above
28°
70°
Gamma Shift From Below
31°
32°
Gamma Shift From Above
33°
32°
Gray Uniformity
8.3
7.8
50% Uniformity Picture
50% Std. Dev.
2.615%
3.370%
50% DSE
0.130%
0.149%
Black Uniformity
6.0
5.7
Native Black Uniformity Picture
Native Std. Dev.
1.989%
2.227%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.1
7.6
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Gamer 1
Game 1
sRGB Gamut Area xy
112.9%
112.2%
White Balance dE (Avg.)
3.85
1.90
Color Temperature (Avg.)
6,569 K
6,826 K
Gamma (Avg.)
2.17
2.09
Color dE (Avg.)
2.95
3.22
Contrast Setting
70
75
RGB Settings
50-50-50
100-100-100
Gamma Setting
Mode 2
No Gamma Setting
Brightness Setting
40
75
Measured Brightness
195 cd/m²
256 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.6
9.7
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Gamer 1
Game 1
sRGB Gamut Area xy
101.8%
98.7%
White Balance dE (Avg.)
0.61
0.54
Color Temperature (Avg.)
6,411 K
6,489 K
Gamma (Avg.)
2.18
2.18
Color dE (Avg.)
0.56
0.45
Contrast Setting
70
75
RGB Settings
48-51-49
100-98-98
Gamma Setting
Mode 2
No Gamma Setting
Brightness Setting
14
22
Measured Brightness
101 cd/m²
101 cd/m²
SDR Color Gamut
8.8
8.9
sRGB Color Gamut Picture
sRGB Coverage xy
97.2%
97.7%
sRGB Picture Mode
Gamer 1
Game 1
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
75.7%
75.2%
Adobe RGB Picture Mode
Gamer 1
Game 1
SDR Color Volume
9.3
9.4
sRGB Color Volume ITP Picture
sRGB In ICtCp
96.0%
96.7%
sRGB Picture Mode
Gamer 1
Game 1
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
81.1%
80.4%
Adobe RGB Picture Mode
Gamer 1
Game 1
HDR Color Gamut
6.8
0.0
Wide Color Gamut
No
N/A
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
82.0%
N/A
DCI-P3 Picture Mode
Gamer 1
No HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
57.9%
N/A
Rec. 2020 Picture Mode
Gamer 1
No HDR
HDR Color Volume
6.8
0.0
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
70.0%
N/A
DCI-P3 Picture Mode
Gamer 1
No HDR
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
52.1%
N/A
Rec. 2020 Picture Mode
Gamer 1
No HDR
Reflections
7.8
8.3
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
4.8%
4.9%
Indirect Reflections
2.9%
4.6%
Calculated Direct Reflections
1.9%
0.3%
Text Clarity
7.0
7.0
ClearType On
ClearType Off
Pixel Type
IPS
IPS
Pixels
Subpixel Layout
RGB
RGB
Gradient
8.6
8.0
Gradient Picture
Color Depth
10 Bit
8 Bit
Motion
Refresh Rate
9.0
9.0
Native Refresh Rate
240 Hz
240 Hz
Max Refresh Rate
240 Hz
240 Hz
Max Refresh Rate Over DP
240 Hz
240 Hz
Max Refresh Rate Over HDMI
240 Hz
240 Hz
Max Refresh Rate Over DP @ 10-bit
144 Hz
N/A
Max Refresh Rate Over HDMI @ 10-Bit
144 Hz
N/A
Variable Refresh Rate (VRR)
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
240 Hz
240 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort
DisplayPort, HDMI
Variable Refresh Rate
Yes
Yes
Response Time @ Max Refresh Rate
9.1
9.5
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Extreme
Rise / Fall Time
3.4 ms
2.9 ms
Total Response Time
6.8 ms
5.1 ms
Overshoot Error
1.0%
0.3%
Worst 3 Rise / Fall Time
4.3 ms
3.3 ms
Worst 3 Total Response Time
9.2 ms
9.4 ms
Worst 3 Overshoot Error
9.8%
2.7%
Response Time @ 120Hz
8.5
8.8
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Normal
Fast
Rise / Fall Time
3.6 ms
4.6 ms
Total Response Time
9.1 ms
7.6 ms
Overshoot Error
3.9%
0.0%
Worst 3 Rise / Fall Time
4.5 ms
5.9 ms
Worst 3 Total Response Time
14.8 ms
9.2 ms
Worst 3 Overshoot Error
20.8%
0.0%
Response Time @ 60Hz
7.9
7.8
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Off
Fast
Rise / Fall Time
4.8 ms
4.6 ms
Total Response Time
13.5 ms
13.4 ms
Overshoot Error
0.0%
2.3%
Worst 3 Rise / Fall Time
6.9 ms
5.8 ms
Worst 3 Total Response Time
18.1 ms
22.0 ms
Worst 3 Overshoot Error
0.0%
9.5%
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
No BFI
No BFI
Maximum Frequency
N/A
N/A
Minimum Frequency
N/A
N/A
Longest Pulse Width Brightness
N/A
N/A
Shortest Pulse Width Brightness
N/A
N/A
Pulse Width Control
No BFI
No BFI
Pulse Phase Control
No BFI
No BFI
Pulse Amplitude Control
No BFI
No BFI
VRR At The Same Time
No BFI
No BFI
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.1
9.1
Native Resolution @ Max Hz
2.8 ms
2.7 ms
Native Resolution @ 120Hz
5.1 ms
4.9 ms
Native Resolution @ 60Hz
9.3 ms
9.7 ms
Backlight Strobing (BFI)
N/A
N/A
Resolution And Size
6.5
6.7
Native Resolution
1920 x 1080
1920 x 1080
Aspect Ratio
16:9
16:9
Megapixels
2.1 MP
2.1 MP
Pixel Density
82 PPI
91 PPI
Measured Screen Diagonal
27.0"
24.5"
Screen Area
310 in²
255 in²
PS5 Compatibility
7.0
3.0
PS5 Compatibility Photo
4k @ 120Hz
No
No
4k @ 60Hz
Yes
No
1440p @ 120Hz
No
No
1440p @ 60Hz
No
No
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
Yes
No
VRR
No
No
Xbox Series X|S Compatibility
7.5
4.2
XSX Compatibility Photo
4k @ 120Hz
No
No
4k @ 60Hz
Yes
No
1440p @ 120Hz
No
No
1440p @ 60Hz
No
No
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
Yes
No
VRR
Yes
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.2)
1 (DP 1.2)
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.0)
2 (HDMI 2.0)
HDMI 2.1 Rated Speed
No HDMI 2.1
No HDMI 2.1
DVI
No
No
VGA
No
No
Daisy Chaining
No
No
3.5mm Audio Out
1
1
HDR10
Yes
No
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
2
4
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
0
USB-C Upstream
No USB-C Ports
No USB-C Ports
USB-C Rated Speed
No USB-C Ports
No USB-C Ports
USB-C Power Delivery
No USB-C Ports
No USB-C Ports
USB-C DisplayPort Alt Mode
No USB-C Ports
No USB-C Ports
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
No
Controllable
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
27GN750-B
SEE PRICE
Amazon.com
25"
Alienware AW2521HF
SEE PRICE
Amazon.com
27"
27GN750-B
SEE PRICE
LG.com
25"
Alienware AW2521HF
SEE PRICE
Walmart.com
27"
27GN750-B
SEE PRICE
Walmart.com
25"
Alienware AW2521HF
SEARCH
B&H
27"
27GN750-B
SEARCH
B&H
25"
Alienware AW2521HF
SEARCH
BestBuy.com
27"
27GN750-B
SEARCH
BestBuy.com
LG 27GN750-B
Dell Alienware AW2521HF
Comments
LG 27GN750-B vs Dell Alienware AW2521HF: Main Discussion
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