Optoma UHD51A vs Optoma HD142X review
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The Optoma UHD51A vs Optoma HD142X comparison shows that these projectors have some important differences and common features. Based on our rating, UHD51A has a total rating of 9.6 out of 10 versus 7.3 for HD142X.
Advantages Optoma UHD51A over Optoma HD142X
- Bring the cinematic 4K UHD experience home with the UHD51A
- UHD51A is HDR-compatible
- More USB ports: 3 vs 1
- Stereo sound vs mono from integrated speakers
Advantages Optoma HD142X over Optoma UHD51A
- Better brightness: 3000 vs 2400 lumens
- Lower power consumption, 260 W vs 317 W
- Longer lamp life (normal mode): 5000 vs 4000 hours
Common features and specifications
- Equal projection screen size: 30-300 inch
- The same noise level: 28 dB
- 3D support
- Equal HDMI connectors quantity: 2
- Integrated speakers
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Common
Product
Optoma UHD51A
Optoma HD142X
Model
UHD51A
HD142X
Brand
Optoma
Optoma
Reviews
146
1904
Resolution
Native resolution
3840 x 2160
1920 x 1080
Max resolution (resized)
3840 x 2160
1920 x 1200
Resolution abbreviation
4K UHD
Full HD
Properties
Projection screen size, inch
30-300
30-300
Projection distance, m/ft
0.8 - 10.6/2.9 - 34.8
1.5 - 10/3.2 - 32.8
Aspect ratio
16:9
16:9
Brightness, lumens
2400
3000
Contrast ratio
500000:1
23000:1
Throw ratio range
1.21:1 - 1.59:1
1.48:1 - 1.62:1
Color reproduction
1.07 billion
1073.4 million
Projection system
DLP
DLP
Noise level, dBA
28
28
Power consumption, W
317
260
Features
Remote control
HDR
3D
Security
kensington lock, password protection
kensington lock, password protection
Projection method
front, rear, ceiling mount, tabletop
front, rear, ceiling mount, tabletop
Wireless connection
optional
Additional features
DLP, Amazon Alexa, Google Assistant
has not
Lamp
Lamp type, W
240
195
Lamp life (normal mode), hours
4000
5000
Lamp life (eco mode), hours
15000
6000
Connectivity
HDMI
2
2
VGA input
1
1
Composite video input (RCA)
0
1
Audio input (RCA)
0
1
Audio input (3.5mm)
1
0
Audio output (3.5mm)
1
1
SPDIF (optical)
1
0
Ethernet (RJ45)
1
0
MHL
RS-232
1
0
12V trigger
1
1
USB
3
1
USB (service)
1
0
Audio
Integrated speakers
Speaker power, W
5
10
Sound type
stereo
mono
Lens
F-number
2.5 - 3.26
2.5 - 2.67
Focal length, mm
20.91 - 32.62
21.86 - 24
Lens shift, %
vertical +/- 15
Zoom ratio
1.3x
1.1x
Settings
Keystone adjustment vertical, +- degrees
40
Keystone adjustment horizontal, +- degrees
Operating temperature
Min, C/F
5/41
5/41
Max, C/F
40/104
40/104
Dimensions
Size W x H x D, сm/inches
39.2 x 12.9 x 28.1/15.4 x 5.1 x 11.1
29.7 x 9.4 x 22.8/11.7 x 3.7 x 9
Weight, kg/pounds
6.5/11.7
2.4/5.5
Other
Release year
2018
2016
Projectors SoundStrokes Art comparison rating
- 9.6Optoma UHD51A
- 7.3Optoma HD142X
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