Products
Samsung Space SR75
LG UltraFine 4k
Tested using Methodology v1.0
Updated Sep 02, 2021 11:29 PM
SEE PRICE
Amazon.com
Tested using Methodology v1.0
Updated Apr 15, 2024 02:42 PM
SEE PRICE
Amazon.com
Size27"
LCD Type
VA
Variable Refresh Rate
FreeSync
Native Resolution2560 x 1440
Native Refresh Rate
144 Hz
Size24"
LCD Type
IPS
Variable Refresh Rate
No
Native Resolution3840 x 2160
Native Refresh Rate
60 Hz
Our Verdict
Samsung Space SR75
LG UltraFine 4k
Overall, the LG UltraFine 4k is a bit better than the Samsung Space SR75, but the SR75 is much better for gaming. The UltraFine has a higher native resolution and much better viewing angles. The SR75 has better contrast, so it's a better choice for a dark room, and it has much better gaming performance. The SR75 has a higher refresh rate, it supports AMD's FreeSync variable refresh rate technology, and it has much lower input lag, for a more responsive gaming experience.
Variants
- S27R750 (27")
- UltraFine 4k (23.7")
Check Price
27"
S27R750
SEE PRICE
Amazon.com
23.7"
UltraFine 4k
SEE PRICE
Amazon.com
27"
S27R750
SEE PRICE
BestBuy.com
23.7"
UltraFine 4k
SEE PRICE
BestBuy.com
27"
S27R750
SEE PRICE
Walmart.com
23.7"
UltraFine 4k
SEE PRICE
Walmart.com
27"
S27R750
SEARCH
B&H
23.7"
UltraFine 4k
SEARCH
B&H
27"
S27R750
SEARCH
Samsung.com
23.7"
UltraFine 4k
SEARCH
LG.com
Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.2
7.4
Vertical Viewing Angle
4.6
8.3
Horizontal Viewing Angle
4.3
7.3
Ergonomics
6.4
4.7
Input Lag
9.5
8.4
Refresh Rate
9.2
6.7
Full Comparison
Design
Style
Design Picture
Size
27"
24"
Curved
No
No
Curve radius
N/A
N/A
Weight (without stand)
7.7 lbs (3.5 kg)
11.5 lbs (5.2 kg)
Weight (with stand)
12.6 lbs (5.7 kg)
15.4 lbs (7.0 kg)
Stand
Stand picture
Width
3.5" (8.9 cm)
7.7" (19.6 cm)
Depth
4.5" (11.4 cm)
9.1" (23.1 cm)
Ergonomics
6.4
4.7
Ergonomics picture
Height Adjustment
8.4" (21.3 cm)
4.3" (10.9 cm)
Switch portrait/landscape
No
No
Swivel Range
N/A
N/A
Tilt Range
-90° to 82°
-25° to 5°
Back
Back picture
Wall Mount
N/A
VESA 100x100
Borders
Borders picture
Borders
0.3" (0.8 cm)
0.7" (1.8 cm)
Thickness
Thickness picture
Thickness (with stand)
4.5" (11.4 cm)
5.7" (14.5 cm)
Thickness (without stand)
N/A
2.0" (5.1 cm)
Build Quality
7.5
7.5
Build Quality picture
Picture Quality
Contrast
7.8
6.6
Checkerboard Picture
LCD Type
VA
IPS
Native Contrast
2,862 : 1
1,445 : 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 Peak Brightness
7.4
8.6
SDR Real Scene
273 cd/m²
554 cd/m²
SDR Peak 2% Window
308 cd/m²
563 cd/m²
SDR Peak 10% Window
308 cd/m²
563 cd/m²
SDR Peak 25% Window
308 cd/m²
563 cd/m²
SDR Peak 50% Window
308 cd/m²
563 cd/m²
SDR Peak 100% Window
308 cd/m²
562 cd/m²
SDR Sustained 2% Window
308 cd/m²
562 cd/m²
SDR Sustained 10% Window
308 cd/m²
562 cd/m²
SDR Sustained 25% Window
308 cd/m²
562 cd/m²
SDR Sustained 50% Window
308 cd/m²
561 cd/m²
SDR Sustained 100% Window
308 cd/m²
561 cd/m²
SDR ABL
0.000
0.000
HDR Peak Brightness
0.0
0.0
HDR Real Scene
N/A
N/A
HDR Peak 2% Window
N/A
N/A
HDR Peak 10% Window
N/A
N/A
HDR Peak 25% Window
N/A
N/A
HDR Peak 50% Window
N/A
N/A
HDR Peak 100% Window
N/A
N/A
HDR Sustained 2% Window
N/A
N/A
HDR Sustained 10% Window
N/A
N/A
HDR Sustained 25% Window
N/A
N/A
HDR Sustained 50% Window
N/A
N/A
HDR Sustained 100% Window
N/A
N/A
HDR ABL
N/A
N/A
Horizontal Viewing Angle
4.3
7.3
Horizontal Viewing Angle Video
Horizontal Color Shift Picture
Color Shift from Left
24°
37°
Color Shift from Right
26°
40°
Horizontal Brightness Picture
Brightness from Left
34°
45°
Brightness from Right
36°
48°
Horizontal Black Level Picture
Black Level from Left
7°
75°
Black Level from Right
8°
75°
Curve Radius
N/A
N/A
Vertical Viewing Angle
4.6
8.3
Vertical Viewing Angle Video
Vertical Color Shift Picture
Color Shift from Below
26°
29°
Color Shift from Above
25°
29°
Vertical Brightness Picture
Brightness from Below
35°
37°
Brightness from Above
35°
37°
Vertical Black Level Picture
Black Level from Below
5°
75°
Black Level from Above
6°
75°
Gray Uniformity
8.3
8.7
50% Uniformity Picture
50% Std. Dev.
3.059%
2.882%
50% DSE
0.107%
0.109%
5% Uniformity Picture
5% Std. Dev.
1.698%
0.396%
5% DSE
0.105%
0.053%
Black Uniformity
4.4
6.3
Native Black Uniformity Picture
Native Std. Dev.
3.058%
1.805%
Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Pre Calibration
8.3
7.7
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom
N/A
Luminance
195 cd/m²
292 cd/m²
Luminance Settings
100
50
Contrast Setting
75
N/A
RGB controls
50-50-50
N/A
Color Temperature
6,692 K
6,427 K
White Balance dE
2.22
2.02
Color dE
2.28
3.54
Gamma
2.27
2.24
Post Calibration
9.5
9.7
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom
N/A
Luminance
101 cd/m²
103 cd/m²
Luminance Settings
15
18
Contrast Setting
76
N/A
RGB Controls
49-50-49
N/A
Color Temperature
6,451 K
6,455 K
White Balance dE
0.65
0.51
Color dE
0.80
0.29
Gamma
2.19
2.18
SDR Color Gamut
8.8
9.3
Color Gamut sRGB Picture
sRGB xy
96.1%
99.6%
Color Gamut ARGB Picture
Adobe RGB xy
80.2%
84.9%
SDR Color Volume
9.4
9.4
sRGB Color Volume ITP picture
sRGB in ICtCp
99.3%
97.8%
Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
87.5%
89.5%
HDR Color Gamut
0.0
0.0
Wide Color Gamut
N/A
N/A
Color Gamut DCI-P3 Picture
DCI P3 xy
N/A
N/A
Color Gamut Rec.2020 Picture
Rec. 2020 xy
N/A
N/A
HDR Color Volume
0.0
0.0
P3 Color Volume ITP Picture
DCI-P3 in ICtCp
N/A
N/A
2020 Color Volume ITP Picture
Rec. 2020 in ICtCp
N/A
N/A
Image Retention
10
5.6
Image Retention Picture
IR after 0 min recovery
0.00%
0.37%
IR after 2 min recovery
0.00%
0.10%
IR after 4 min recovery
0.00%
0.00%
IR after 6 min recovery
0.00%
0.00%
IR after 8 min recovery
0.00%
0.00%
IR after 10 min recovery
0.00%
0.00%
Gradient
9.7
9.9
Gradient Picture
Color Depth
10 Bit
10 Bit
Color Bleed
10
10
Color bleed horizontal
Pixel row error
0.000%
0.004%
Color bleed vertical
Pixel column error
0.001%
0.004%
Reflections
7.0
6.0
Average room
Average room off picture
Bright room off picture
Motion
Motion Blur
8.9
8.5
Motion Blur Picture
Response Time Chart
80% Response Time
4.3 ms
5.6 ms
100% Response Time
13.6 ms
13.9 ms
Best Overdrive Setting
Faster
N/A
Image Flicker
7.5
5.7
Backlight Picture
Flicker-free
No
No
PWM Dimming Frequency
>1000 Hz
700 Hz
Black Frame Insertion (BFI)
No
No
BFI Picture
BFI Frequency Picture
BFI Maximum Frequency
N/A
N/A
BFI Minimum Frequency
N/A
N/A
Refresh Rate
9.2
6.7
Variable Refresh Rate
FreeSync
No
Native Refresh Rate
144 Hz
60 Hz
Factory Overclock
N/A
N/A
Variable Refresh Rate
FreeSync
No
G-SYNC Compatible
Yes (Native)
No
VRR Maximum
144 Hz
N/A
VRR Minimum
< 20 Hz
N/A
VRR Maximum With OC
N/A
N/A
VRR Supported Connectors
DisplayPort, HDMI
N/A
Inputs
Input Lag
9.5
8.4
Native Resolution
4.3 ms
13.2 ms
Non-Native Res @ Native Refresh
N/A
11.3 ms
Native Resolution @ 60 Hz
9.0 ms
13.2 ms
Variable Refresh Rate
4.7 ms
N/A
10 bit HDR
N/A
N/A
Black Frame Insertion (BFI)
N/A
N/A
Resolution and Size
8.4
8.9
Native Resolution
2560 x 1440
3840 x 2160
Aspect Ratio
16:9
16:9
Megapixels
3.7 MP
8.3 MP
Pixel Density
109 PPI
186 PPI
Screen Diagonal
27.0"
23.7"
Screen Area
310 in²
240 in²
Inputs
Inputs 1
Inputs 2
Total Inputs
DisplayPort
No
No
Mini DisplayPort
1 (DP 1.2)
No
HDMI
1 (HDMI 2.0)
No
DVI
No
No
VGA
No
No
DisplayPort Out
No
No
USB
No
No
USB C
No
5 (2x Thunderbolt 3 with PD, 3x USB-C)
Analog Audio Out 3.5mm
No
No
Microphone In 3.5mm
No
No
Digital Optical Audio Out
No
No
Analog Audio Out RCA
No
No
Power Supply
External Brick
Internal
Features
Additional Features
Speakers
No
Yes
HDR10
No
No
Multiple input display
PIP + PBP
No
On-Screen Display (OSD)
OSD picture
Controls
Controls picture
In The Box
In The Box picture
Check Price
27"
S27R750
SEE PRICE
Amazon.com
23.7"
UltraFine 4k
SEE PRICE
Amazon.com
27"
S27R750
SEE PRICE
BestBuy.com
23.7"
UltraFine 4k
SEE PRICE
BestBuy.com
27"
S27R750
SEE PRICE
Walmart.com
23.7"
UltraFine 4k
SEE PRICE
Walmart.com
27"
S27R750
SEARCH
B&H
23.7"
UltraFine 4k
SEARCH
B&H
27"
S27R750
SEARCH
Samsung.com
23.7"
UltraFine 4k
SEARCH
LG.com
Samsung Space SR75
LG UltraFine 4k
Comments
Samsung Space SR75 vs LG UltraFine 4k: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.