Comparison between Dell UltraSharp U3818DW vs Samsung C34J791

General Info
Model Number	Dell UltraSharp U3818DW	Samsung C34J791

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2017	2018
Brand	Dell	Samsung
Model Number	UltraSharp U3818DW	C34J791
Alias		LC34J791WTEXXS
Display
Screen Size Class	38" (inches)	34" (inches)
Diagonal Size	37.5 in 95.3 cm 952.5 mm 3.13 ft	34 in 86.4 cm 863.6 mm 2.83 ft
Screen Width	34.63 in 88 cm 879.67 mm 2.89 ft	31.49 in 80 cm 799.8 mm 2.62 ft
Screen Height	14.43 in 36.7 cm 366.53 mm 1.2 ft	13.18 in 33.5 cm 334.8 mm 1.1 ft
Display Curvature	2300	1500
Display Manufacturer	LG Display	Samsung
Display Type	AH-IPS	SVA
Display Bit Depth	10 bits	8 bits
Frame Rate Control	No	No
Max Number of Colors	1073741824	16777216
Bits	30	24
Screen Aspect Ratio		21:9
Screen Resolution	3840 x 1600	3440 x 1440
Screen Pixel Pitch	0.229 mm	0.233 mm
Screen Pixel Density	111 ppi	109 ppi
Screen-to-Body Ratio	90.89 %	91.27 %
Backlight Source	W-LED	Edge LED
DCI P3	78.1%
sRGB	99 %	125 %
Adobe RGB 1998		92 %
Screen Brightness	350 cd/m²	300 cd/m²
Static Screen Contrast	1000 : 1	3000 : 1
Dynamic Screen Contrast		100000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	25 ms	6 ms
Display Minimum Response Time	5 ms	4 ms
Display Average Response Time	8 ms	14 ms
Display Maximum Response Time	20 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (2H)
3D	No	No
Size, weight, color
Case Depth	2.19 in 5.6 cm 55.5 mm 0.18 ft	6.57 in 16.7 cm 167 mm 0.55 ft
Case Weight	9.05 kg 20 lbs	6.3 kg 14 lbs
Case Width with Stand	35.2 in 89.4 cm 894 mm 2.93 ft	31.84 in 80.9 cm 808.7 mm 2.65 ft
Case Height with Stand	17.01 in 43.2 cm 432 mm 1.42 ft	20.31 in 51.6 cm 516 mm 1.69 ft
Case Depth with Stand	8.91 in 22.6 cm 226.4 mm 0.74 ft	12.18 in 30.9 cm 309.4 mm 1.02 ft
Case Weight with Stand	12.14 kg 27 lbs	7.7 kg 17 lbs
Case Color	Black	White, Silver
Hardware
Built-in Camera	No	No
Connectivity	2 x USB 3.0 (upstream) 2 x HDMI 2.0 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 4 x USB 3.0 (downstream) 1 x USB 3.0 (Type-C)	1 x DisplayPort 1.2 2 x Thunderbolt 3.0 1 x 3.5 mm Audio Out 2 x USB 2.0 (downstream) 1 x HDMI 1.4
Audio
Audio Speakers	2 x 9W	2 x 7W
Features
Cool Features	Picture-in-Picture HDCP (High-bandwidth Digital Content Protection) Picture-by-Picture	Eye Saver Mode Flicker-free technology Picture-by-Picture Picture-in-Picture HDCP (High-bandwidth Digital Content Protection) AMD FreeSync technology Eco Saving Plus
Extra Features	Security lock slot	Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	35.2 in 89.4 cm 894 mm 2.93 ft	31.84 in 80.9 cm 808.7 mm 2.65 ft
Case Height	15.62 in 39.7 cm 396.8 mm 1.3 ft	14.28 in 36.3 cm 362.8 mm 1.19 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	100 x 100	100 x 100
Removable VESA Stand	Yes	Yes
Height Adjustment	Yes	Yes
Height Adjustment Range	115 mm 11.5 cm 4.5276 in 0.3773 ft	100 mm 10 cm 3.937 in 0.3281 ft
Landscape or Portrait Pivot Support	No	No
Left or Right Swivel Support	Yes	No
Left Swivel	30 °
Right Swivel	30 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	2 °
Backward Tilt	21 °	34 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	48 Hz - 100 Hz
Horizontal Digital Frequency		30 kHz - 152 kHz
Accessories
Extras	DisplayPort cable Factory Calibration Report HDMI cable USB 3.0 upstream cable USB Type-C cable
Certificates and Standards
Licenses	CECP CEL ENERGY STAR RoHS Compliant TCO Certified Displays	ENERGY STAR FCC Class B ISO9241-307 TÜV/Ergonomics
Usage and Storage Requirements
Safe Operating Temperature Level	0 °C - 40 °C 32 °F - 104 °F	10 °C - 40 °C 50 °F - 104 °F
Safe Operating Humidity Level	10 % - 80 %	10 % - 80 %
Internal Storage Temperature	-20 °C - 60 °C -4 °F - 140 °F	-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity	5 % - 90 %	5 % - 95 %
Max Operating Altitude	5000
Max Storage Altitude	12192

Dell UltraSharp U3818DW

Samsung C34J791