BenQ TH671ST vs Optoma UHD51ALV review
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If you have already decided that you want to buy a new projector, but still don’t know what exactly you want, the BenQ TH671ST vs Optoma UHD51ALV comparison is here to offer you two decent solutions. Based on our rating, TH671ST has a total rating of 7.3 out of 10 versus 9.6 for UHD51ALV.
Advantages Optoma UHD51ALV over BenQ TH671ST
- Bring the cinematic 4K UHD experience home with the UHD51ALV
- Bigger projection screen size: 34-302 inch vs 30-300 inch
- Lower noise level, 28 dB vs 33 dB
- Lower power consumption, 317 W vs 355 W
- UHD51ALV is HDR-compatible
- 3D support
- More USB ports: 3 vs 1
- Stereo sound vs mono from integrated speakers
Common features and specifications
- Equal brightness: 3000 lumens
- Wireless connection
- Equal lamp life (normal mode): 4000 hours
- Equal HDMI connectors quantity: 2
- Integrated speakers
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Common
Product
BenQ TH671ST
Optoma UHD51ALV
Model
TH671ST
UHD51ALV
Brand
BenQ
Optoma
Reviews
501
146
Resolution
Native resolution
1920 x 1080
3840 x 2160
Max resolution (resized)
1920 x 1200
4096 x 2160
Resolution abbreviation
Full HD
4K UHD
Properties
Projection screen size, inch
30-300
34-302
Projection distance, m/ft
0.9 - 3.3/3.2 - 9.8
0.8 - 10.6/2.9 - 34.9
Aspect ratio
16:9
16:9
Brightness, lumens
3000
3000
Contrast ratio
10000:1
500000:1
Throw ratio range
0.69:1 - 0.83:1
1.21:1 - 1.59:1
Color reproduction
1.07 billion
Projection system
DLP
DLP
Noise level, dBA
33
28
Power consumption, W
355
317
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
Additional features
DLP
Amazon Alexa, Google Assistant, DLP
Lamp
Lamp type, W
240
240
Lamp life (normal mode), hours
4000
4000
Lamp life (eco mode), hours
10000
10000
Connectivity
HDMI
2
2
VGA input
1
1
Composite video input (RCA)
0
0
Audio input (RCA)
0
0
Audio input (3.5mm)
1
1
Audio output (3.5mm)
1
1
SPDIF (optical)
0
1
Ethernet (RJ45)
0
1
MHL
RS-232
1
1
12V trigger
0
1
USB
1
3
USB (service)
1
1
Audio
Integrated speakers
Speaker power, W
5
5
Sound type
mono
stereo
Lens
F-number
2.6 - 2.78
2.5 - 3.26
Focal length, mm
10.2 - 12.24
20.9 - 32.6
Lens shift, %
vertical +/- 40
vertical +/- 10
Zoom ratio
1.2x
1.3x
Settings
Keystone adjustment vertical, +- degrees
40
Keystone adjustment horizontal, +- degrees
Operating temperature
Min, C/F
0/32
5/41
Max, C/F
40/104
40/104
Dimensions
Size W x H x D, сm/inches
27.9 x 10.1 x 22.8/11.7 x 4.6 x 9.5
39.1 x 12.9 x 28,1/15.4 x 5.1 x 11.1
Weight, kg/pounds
2.2/5.9
5.3/11.7
Other
Release year
2017
2018
Projectors SoundStrokes Art comparison rating
- 7.3BenQ TH671ST
- 9.6Optoma UHD51ALV
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