Products
Samsung CF398
Acer XF251Q Bmiirx
Tested using Methodology v1.0
Updated Jun 07, 2024 08:37 PM
SEE PRICE
Samsung.com
Tested using Methodology v1.0
Updated Sep 02, 2021 09:17 PM
SEE PRICE
Amazon.com
Size27"
LCD Type
VA
Variable Refresh Rate
FreeSync
Native Resolution1920 x 1080
Native Refresh Rate
60 Hz
Size25"
LCD Type
TN
Variable Refresh Rate
FreeSync
Native Resolution1920 x 1080
Native Refresh Rate
75 Hz
Our Verdict
Samsung CF398
Acer XF251Q Bmiirx
The Acer XF251Q Bmiirx is a 25" TN monitor, whereas the Samsung CF398 is a VA monitor. The XF251Q has better motion handling, thanks to a faster response time. The XF251Q is a bit brighter, but the CF398 has much better native contrast, so it looks better in a dark room.
Variants
- C27F398 (27")
- XF251Q (24.5")
Check Price
27"
C27F398
SEE PRICE
Samsung.com
24.5"
XF251Q
SEE PRICE
Amazon.com
27"
C27F398
SEE PRICE
Amazon.com
24.5"
XF251Q
SEE PRICE
BestBuy.com
27"
C27F398
SEE PRICE
BestBuy.com
24.5"
XF251Q
SEE PRICE
Walmart.com
27"
C27F398
SEE PRICE
Walmart.com
24.5"
XF251Q
SEARCH
B&H
27"
C27F398
SEARCH
B&H
Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
6.9
7.1
Ergonomics
1.5
8.0
Vertical Viewing Angle
6.6
5.1
Full Comparison
Design
Style
Design Picture
Size
27"
25"
Curved
Yes
No
Curve radius
1800R
N/A
Weight (without stand)
7.9 lbs (3.6 kg)
8.2 lbs (3.7 kg)
Weight (with stand)
9.0 lbs (4.1 kg)
12.3 lbs (5.6 kg)
Stand
Stand picture
Width
18.5" (47.0 cm)
15.3" (38.9 cm)
Depth
9.6" (24.4 cm)
10.6" (26.9 cm)
Ergonomics
1.5
8.0
Ergonomics picture
Height Adjustment
0.0" (0.0 cm)
4.5" (11.4 cm)
Switch portrait/landscape
No
Yes
Swivel Range
N/A
-45° to 45°
Tilt Range
-22.5° to 2.5°
-20° to 5°
Back
Back picture
Wall Mount
VESA 75x75
VESA 100x100
Borders
Borders picture
Borders
0.6" (1.5 cm)
0.3" (0.8 cm)
Thickness
Thickness picture
Thickness (with stand)
7.5" (19.1 cm)
8.5" (21.6 cm)
Thickness (without stand)
4.2" (10.7 cm)
2.2" (5.6 cm)
Build Quality
6.5
7.5
Build Quality picture
Picture Quality
Contrast
7.8
6.2
Checkerboard Picture
LCD Type
VA
TN
Native Contrast
2,909 : 1
1,161 : 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
6.5
7.3
SDR Real Scene
218 cd/m²
273 cd/m²
SDR Peak 2% Window
239 cd/m²
299 cd/m²
SDR Peak 10% Window
239 cd/m²
300 cd/m²
SDR Peak 25% Window
239 cd/m²
300 cd/m²
SDR Peak 50% Window
239 cd/m²
300 cd/m²
SDR Peak 100% Window
239 cd/m²
300 cd/m²
SDR Sustained 2% Window
239 cd/m²
299 cd/m²
SDR Sustained 10% Window
239 cd/m²
300 cd/m²
SDR Sustained 25% Window
239 cd/m²
300 cd/m²
SDR Sustained 50% Window
239 cd/m²
300 cd/m²
SDR Sustained 100% Window
239 cd/m²
300 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
5.7
5.2
Horizontal Viewing Angle Video
Horizontal Color Shift Picture
Color Shift from Left
43°
30°
Color Shift from Right
41°
28°
Horizontal Brightness Picture
Brightness from Left
53°
47°
Brightness from Right
51°
45°
Horizontal Black Level Picture
Black Level from Left
22°
31°
Black Level from Right
23°
27°
Curve Radius
1,800R
N/A
Vertical Viewing Angle
6.6
5.1
Vertical Viewing Angle Video
Vertical Color Shift Picture
Color Shift from Below
39°
9°
Color Shift from Above
41°
33°
Vertical Brightness Picture
Brightness from Below
53°
14°
Brightness from Above
54°
38°
Vertical Black Level Picture
Black Level from Below
13°
19°
Black Level from Above
14°
25°
Gray Uniformity
8.9
7.5
50% Uniformity Picture
50% Std. Dev.
2.224%
6.636%
50% DSE
0.099%
0.117%
5% Uniformity Picture
5% Std. Dev.
0.760%
2.246%
5% DSE
0.067%
0.078%
Black Uniformity
6.3
6.4
Native Black Uniformity Picture
Native Std. Dev.
1.812%
1.690%
Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Pre Calibration
6.1
5.2
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom
Graphics
Luminance
273 cd/m²
307 cd/m²
Luminance Settings
100
80
Contrast Setting
75
50
RGB controls
50-50-50
50-50-50
Color Temperature
5,934 K
6,058 K
White Balance dE
4.71
5.07
Color dE
3.64
4.70
Gamma
2.10
2.14
Post Calibration
9.6
9.3
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom
User
Luminance
100 cd/m²
101 cd/m²
Luminance Settings
33
14
Contrast Setting
76
50
RGB Controls
40-43-50
43-49-50
Color Temperature
6,491 K
6,499 K
White Balance dE
0.50
0.58
Color dE
0.67
1.15
Gamma
2.19
2.17
SDR Color Gamut
8.6
8.4
Color Gamut sRGB Picture
sRGB xy
95.5%
92.5%
Color Gamut ARGB Picture
Adobe RGB xy
75.3%
73.7%
SDR Color Volume
9.0
8.6
sRGB Color Volume ITP picture
sRGB in ICtCp
97.4%
93.5%
Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
81.8%
77.7%
HDR Color Gamut
0.0
0.0
Wide Color Gamut
N/A
No
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
10
Image Retention Picture
IR after 0 min recovery
0.00%
0.00%
IR after 2 min recovery
0.00%
0.00%
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
8.4
7.9
Gradient Picture
Color Depth
8 Bit
8 Bit
Color Bleed
10
10
Color bleed horizontal
Pixel row error
0.000%
0.000%
Color bleed vertical
Pixel column error
0.000%
0.000%
Reflections
8.0
7.5
Average room
Average room off picture
Bright room off picture
Motion
Motion Blur
8.5
9.4
Motion Blur Picture
Response Time Chart
80% Response Time
5.4 ms
2.9 ms
100% Response Time
14.3 ms
12.2 ms
Best Overdrive Setting
Fastest
Normal
Image Flicker
7.5
7.5
Backlight Picture
Flicker-free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Black Frame Insertion (BFI)
No
N/A
BFI Picture
BFI Frequency Picture
BFI Maximum Frequency
N/A
N/A
BFI Minimum Frequency
N/A
N/A
Refresh Rate
7.7
8.2
Variable Refresh Rate
FreeSync
FreeSync
Native Refresh Rate
60 Hz
75 Hz
Factory Overclock
N/A
N/A
Variable Refresh Rate
FreeSync
FreeSync
G-SYNC Compatible
Yes
No
VRR Maximum
72 Hz
75 Hz
VRR Minimum
48 Hz
40 Hz
VRR Maximum With OC
72 Hz
N/A
VRR Supported Connectors
DisplayPort, HDMI
HDMI
Inputs
Input Lag
9.0
9.2
Native Resolution
9.2 ms
7.1 ms
Non-Native Res @ Native Refresh
9.2 ms
N/A
Native Resolution @ 60 Hz
9.2 ms
8.8 ms
Variable Refresh Rate
8.0 ms
7.4 ms
10 bit HDR
N/A
N/A
Black Frame Insertion (BFI)
N/A
N/A
Resolution and Size
7.3
7.2
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
90 PPI
Screen Diagonal
27.0"
24.5"
Screen Area
310 in²
257 in²
Inputs
Inputs 1
Inputs 2
Total Inputs
DisplayPort
1 (DP 1.2)
No
Mini DisplayPort
No
No
HDMI
1 (HDMI 1.4)
2 (HDMI 1.4)
DVI
No
No
VGA
No
1
DisplayPort Out
No
No
USB
No
No
USB C
No
No
Analog Audio Out 3.5mm
1
1
Microphone In 3.5mm
No
1
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
No
No
On-Screen Display (OSD)
OSD picture
Controls
Controls picture
In The Box
In The Box picture
Check Price
27"
C27F398
SEE PRICE
Samsung.com
24.5"
XF251Q
SEE PRICE
Amazon.com
27"
C27F398
SEE PRICE
Amazon.com
24.5"
XF251Q
SEE PRICE
BestBuy.com
27"
C27F398
SEE PRICE
BestBuy.com
24.5"
XF251Q
SEE PRICE
Walmart.com
27"
C27F398
SEE PRICE
Walmart.com
24.5"
XF251Q
SEARCH
B&H
27"
C27F398
SEARCH
B&H
Samsung CF398
Acer XF251Q Bmiirx
Comments
Samsung CF398 vs Acer XF251Q Bmiirx: Main Discussion
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