Products
Dell U3417W
Samsung C34F791/CF791
Tested using Methodology v1.0
Updated Jun 07, 2024 08:38 PM
SEE PRICE
Amazon.com
Tested using Methodology v1.0
Updated Jun 07, 2024 08:04 PM
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Amazon.com
Size34"
LCD Type
IPS
Variable Refresh Rate
No
Native Resolution3440 x 1440
Native Refresh Rate
60 Hz
Size34"
LCD Type
VA
Variable Refresh Rate
FreeSync
Native Resolution3440 x 1440
Native Refresh Rate
100 Hz
Our Verdict
Dell U3417W
Samsung C34F791/CF791
If you've got a large room with wide seating, then the Dell U3417W is a better choice, but if you're interested in gaming in a dark room while sitting directly in front, then the Samsung C34F791/CF791 is better. The Dell U3417W has an IPS panel, giving you better viewing angles, whereas the CF791 has a slightly better refresh rate and a slightly faster response time resulting in clearer motion.
Variants
- U3417W (34")
- C34F791 (34")
Check Price
34"
U3417W
SEE PRICE
Amazon.com
34"
C34F791
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Amazon.com
34"
U3417W
SEE PRICE
BestBuy.com
34"
C34F791
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Walmart.com
34"
U3417W
SEE PRICE
Walmart.com
34"
C34F791
SEARCH
B&H
34"
U3417W
SEARCH
B&H
34"
C34F791
SEARCH
BestBuy.com
34"
C34F791
SEARCH
Samsung.com
Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.4
6.9
Vertical Viewing Angle
8.5
4.4
Horizontal Viewing Angle
7.5
4.9
Full Comparison
Design
Style
Design Picture
Size
34"
34"
Curved
Yes
Yes
Curve radius
1900R
1500R
Weight (without stand)
16.8 lbs (7.6 kg)
13.2 lbs (6.0 kg)
Weight (with stand)
22.0 lbs (10.0 kg)
16.5 lbs (7.5 kg)
Stand
Stand picture
Width
13.4" (34.0 cm)
9.7" (24.6 cm)
Depth
8.9" (22.6 cm)
12.2" (31.0 cm)
Ergonomics
6.1
4.7
Ergonomics picture
Height Adjustment
4.4" (11.2 cm)
3.9" (9.9 cm)
Switch portrait/landscape
No
No
Swivel Range
-30° to 30°
N/A
Tilt Range
-20° to 5°
-20° to 15°
Back
Back picture
Wall Mount
VESA 100x100
VESA 100x100
Borders
Borders picture
Borders
0.4" (1.0 cm)
0.3" (0.8 cm)
Thickness
Thickness picture
Thickness (with stand)
7.9" (20.1 cm)
8.1" (20.6 cm)
Thickness (without stand)
4.0" (10.2 cm)
4.6" (11.7 cm)
Build Quality
8.0
8.0
Build Quality picture
Picture Quality
Contrast
5.8
7.6
Checkerboard Picture
LCD Type
IPS
VA
Native Contrast
908 : 1
2,527 : 1
Contrast with local dimming
N/A
N/A
Local Dimming
0.0
0.0
Local Dimming Video
Local Dimming
No
No
Backlight
Edge
Direct
SDR Peak Brightness
8.0
7.0
SDR Real Scene
349 cd/m²
264 cd/m²
SDR Peak 2% Window
366 cd/m²
247 cd/m²
SDR Peak 10% Window
364 cd/m²
246 cd/m²
SDR Peak 25% Window
361 cd/m²
246 cd/m²
SDR Peak 50% Window
359 cd/m²
245 cd/m²
SDR Peak 100% Window
357 cd/m²
244 cd/m²
SDR Sustained 2% Window
365 cd/m²
246 cd/m²
SDR Sustained 10% Window
361 cd/m²
246 cd/m²
SDR Sustained 25% Window
358 cd/m²
245 cd/m²
SDR Sustained 50% Window
356 cd/m²
245 cd/m²
SDR Sustained 100% Window
354 cd/m²
244 cd/m²
SDR ABL
0.002
0.001
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
7.5
4.9
Horizontal Viewing Angle Video
Horizontal Color Shift Picture
Color Shift from Left
44°
33°
Color Shift from Right
40°
32°
Horizontal Brightness Picture
Brightness from Left
51°
45°
Brightness from Right
50°
45°
Horizontal Black Level Picture
Black Level from Left
75°
12°
Black Level from Right
75°
11°
Curve Radius
1,900R
1,500R
Vertical Viewing Angle
8.5
4.4
Vertical Viewing Angle Video
Vertical Color Shift Picture
Color Shift from Below
32°
26°
Color Shift from Above
31°
26°
Vertical Brightness Picture
Brightness from Below
39°
33°
Brightness from Above
37°
33°
Vertical Black Level Picture
Black Level from Below
75°
5°
Black Level from Above
75°
5°
Gray Uniformity
8.1
8.2
50% Uniformity Picture
50% Std. Dev.
4.428%
4.408%
50% DSE
0.133%
0.103%
5% Uniformity Picture
5% Std. Dev.
0.562%
1.800%
5% DSE
0.057%
0.061%
Black Uniformity
4.4
5.2
Native Black Uniformity Picture
Native Std. Dev.
3.047%
2.554%
Black Uniformity Picture with Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Pre Calibration
8.2
7.2
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Multimedia
Custom
Luminance
200 cd/m²
243 cd/m²
Luminance Settings
75
100
Contrast Setting
75
75
RGB controls
Default
Cool1
Color Temperature
6,436 K
6,346 K
White Balance dE
2.18
3.46
Color dE
2.47
3.09
Gamma
2.11
2.26
Post Calibration
9.4
9.4
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom Color
Custom
Luminance
100 cd/m²
99 cd/m²
Luminance Settings
29
23
Contrast Setting
75
75
RGB Controls
(high-97-99-97)-(Low-49-50-49)
35-44-50
Color Temperature
6,452 K
6,432 K
White Balance dE
0.81
0.63
Color dE
0.86
0.84
Gamma
2.16
2.19
SDR Color Gamut
8.5
8.9
Color Gamut sRGB Picture
sRGB xy
96.7%
95.6%
Color Gamut ARGB Picture
Adobe RGB xy
72.3%
80.8%
SDR Color Volume
8.4
9.4
sRGB Color Volume ITP picture
sRGB in ICtCp
92.3%
98.5%
Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
74.6%
88.2%
HDR Color Gamut
0.0
0.0
Wide Color Gamut
No
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
7.7
Image Retention Picture
IR after 0 min recovery
0.00%
0.11%
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
8.1
8.1
Gradient Picture
Color Depth
8 Bit
8 Bit
Color Bleed
10
10
Color bleed horizontal
Pixel row error
0.002%
0.001%
Color bleed vertical
Pixel column error
0.001%
0.001%
Reflections
8.0
7.5
Average room
Average room off picture
Bright room off picture
Motion
Motion Blur
8.4
9.0
Motion Blur Picture
Response Time Chart
80% Response Time
6.4 ms
4.0 ms
100% Response Time
12.9 ms
13.7 ms
Best Overdrive Setting
Normal
Faster
Image Flicker
7.5
7.5
Backlight Picture
Flicker-free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 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
6.7
8.8
Variable Refresh Rate
No
FreeSync
Native Refresh Rate
60 Hz
100 Hz
Factory Overclock
N/A
N/A
Variable Refresh Rate
No
FreeSync
G-SYNC Compatible
No
Partial
VRR Maximum
N/A
100 Hz
VRR Minimum
N/A
< 20 Hz
VRR Maximum With OC
N/A
N/A
VRR Supported Connectors
N/A
DisplayPort, HDMI
Inputs
Input Lag
7.9
7.2
Native Resolution
17.2 ms
20.7 ms
Non-Native Res @ Native Refresh
17.3 ms
N/A
Native Resolution @ 60 Hz
17.2 ms
26.9 ms
Variable Refresh Rate
N/A
23.6 ms
10 bit HDR
N/A
N/A
Black Frame Insertion (BFI)
N/A
N/A
Resolution and Size
8.9
8.9
Native Resolution
3440 x 1440
3440 x 1440
Aspect Ratio
21:9
21:9
Megapixels
5.0 MP
5.0 MP
Pixel Density
109 PPI
110 PPI
Screen Diagonal
34.1"
34.0"
Screen Area
415 in²
411 in²
Inputs
Inputs 1
Inputs 2
Total Inputs
DisplayPort
1 (DP 1.2)
1 (DP 1.2)
Mini DisplayPort
1 (DP 1.2)
No
HDMI
2 (HDMI 2.0)
2 (HDMI 2.0)
DVI
No
No
VGA
No
No
DisplayPort Out
1 (DP 1.2)
No
USB
4 (USB 3.0)
2 (USB 3.0)
USB C
No
No
Analog Audio Out 3.5mm
1
1
Microphone In 3.5mm
No
No
Digital Optical Audio Out
No
No
Analog Audio Out RCA
No
No
Power Supply
Internal
External Brick
Features
Additional Features
Speakers
Yes
Yes
HDR10
No
No
Multiple input display
PIP + PBP
PIP + PBP
On-Screen Display (OSD)
OSD picture
Controls
Controls picture
In The Box
In The Box picture
Check Price
34"
U3417W
SEE PRICE
Amazon.com
34"
C34F791
SEE PRICE
Amazon.com
34"
U3417W
SEE PRICE
BestBuy.com
34"
C34F791
SEE PRICE
Walmart.com
34"
U3417W
SEE PRICE
Walmart.com
34"
C34F791
SEARCH
B&H
34"
U3417W
SEARCH
B&H
34"
C34F791
SEARCH
BestBuy.com
34"
C34F791
SEARCH
Samsung.com
Dell U3417W
Samsung C34F791/CF791
Comments
Dell U3417W vs Samsung C34F791/CF791: Main Discussion
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