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Compare 4 products

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BenQ TK800 Projector
BenQ TK800
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BenQ TK800M Projector
BenQ TK800M
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BenQ TK850 Projector
BenQ TK850
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Optoma UHD51 Projector
Optoma UHD51
Available colors
Editiorial reviews
19
4.4 out of 5
10 user ratings
5 stars
60 %
4 stars
40 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
13
4.4 out of 5
6 user ratings
5 stars
83 %
4 stars
16 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
9
4.4 out of 5
8 user ratings
5 stars
75 %
4 stars
25 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
6
6 editorial reviews
I’ve been writing about projectors for more than 10 years now, and it has been a delight to see the quality increase and the prices fall. And, of course, the technological developments. But, in truth, I haven’t been all that enamoured by the move to ever higher resolutions. Some years ago, I was telling readers that “720 is plenty”. Even on a 100″ projector screen, the resolution is enough to banish any blurring at the… Now read on…Read more
Our Optoma UHD51A review takes a look at a 4K UHD HDR home theatre projector with both Alexa and Google Home support, as well as a built-in media player.Read more
‘Hey Alexa, bring the cinema home’Read more
Read editorial reviews
User rating
59
4.0 out of 5
59 user ratings
5 stars
40 %
4 stars
27 %
3 stars
23 %
2 stars
6 %
1 stars
1 %
61
3.7 out of 5
61 user ratings
5 stars
34 %
4 stars
31 %
3 stars
14 %
2 stars
13 %
1 stars
6 %
44
3.7 out of 5
44 user ratings
5 stars
22 %
4 stars
36 %
3 stars
29 %
2 stars
11 %
1 stars
0 %
47
3.8 out of 5
47 user ratings
5 stars
27 %
4 stars
34 %
3 stars
29 %
2 stars
8 %
1 stars
0 %

General

Projector typeDLPDLPDLPDLP

Connectivity

Serial interface typeRS-232RS-232RS-232RS-232
DVI innononono
HDMIyes
N/A
N/A
yes
HDMI version1.4a/2.01.4a/2.02.0b2.0
Number of HDMI inputs2222
HDMI connector typeFull-sizeFull-sizeFull-sizeFull-size
HDCPyesyesyesyes
USByes
N/A
N/A
yes
USB 2.01112
VGA inyes
N/A
N/A
yes
Number of VGA (D-Sub) ports11
N/A
1
12V triggeryes
N/A
N/A
yes
AC (power) inputyesyesyesyes
Analog 3.5mm output
N/A
N/A
N/A
yes
Analogue 3.5mm input
N/A
N/A
N/A
yes
Digital coaxial output (S/PDIF)
N/A
N/A
N/A
yes
Other connectors
N/A
N/A
N/A
5mm output

Design

Design typeDesktop projectorStandard throw projectorStandard throw projectorDesktop projector
Colour of product
  • Blue,White
  • Turquoise,White
  • Black,White
  • Blue,White
Grey,WhiteBlack
Built-in displaynononono
Cable lock slot
N/A
yesyesyes
Portable
N/A
N/A
N/A
no
Steering
N/A
N/A
N/A
Manual

Technical details

Noise level< 3333.0 dB30.0 dB< 25
Noise level (economic mode)29.0 dB29.0 dB28.0 dB
N/A
Operating relative humidity (H-H)10 - 90
N/A
10 - 900 - 85

Dimensions

Width13.9 in13.9 in14.96 in15.43 in
Height5.31 in5.31 in5.0 in4.65 in
Depth10.71 in10.71 in10.35 in11.06 in
Weight9.26 lb9.26 lb9.26 lb11.51 lb

Optics

Focal length range (f-f)15.57 - 18.67
N/A
12 - 15.612.81 - 16.74
Throw ratio1.47 - 1.761.5 - 1.651.13 - 1.471.21 - 1.59
Aperture range (F-F)1.94 - 2.06
N/A
1.9 - 2.47
N/A
Zoom ratio1.2 x1.1 x1.3 x1.3 x
Offset110.0 %110.0 %100.0 %105.0 %
Matrix type
N/A
N/A
DMD
N/A
Matrix size
N/A
N/A
0.47
N/A
Lens shift
N/A
N/A
N/A
yes
Type of lens shift
N/A
N/A
N/A
Vertical
Zoom type
N/A
N/A
N/A
Manual
Projection distance
N/A
N/A
N/A
1.2 - 8.1

Lighting

Lamp life max (normal)4000.0 h4000.0 h
N/A
4000.0 h
Lamp life max (eco)15000.0 h10000.0 h
N/A
10000.0 h
Number of lamps1111
Bulb power240.0 W240.0 W
N/A
240.0 W

Image

Screen size compatibility30 - 30030 - 30040 - 20034.1 - 302.4
Resolution3840 x 2160 px
N/A
N/A
3840 x 2160 px
Number of colours1.073 billion colours1.073 billion colours1.073 billion colours
N/A
Supported graphics resolutions
  • 640 x 480
  • 1280 x 720
  • 3840 x 2160
  • 640 x 480
  • 3840 x 2160
  • 640 x 480
  • 720 x 576
  • 1280 x 720
  • 1920 x 1080
  • 3840 x 2160
  • 640 x 480
  • 800 x 600
  • 1024 x 768
  • 1280 x 1024
  • 1280 x 720
  • 1280 x 768
  • 1600 x 1200
  • 1920 x 1080
  • 1920 x 1200
  • 3840 x 2160
Native aspect ratio16:916:916:916:9
Aspect ratio16:916:9
N/A
  • 4:3
  • 16:9
Brightness (max)3000.0 lm3000.0 lm3000.0 lm2400.0 lm
Contrast ratio10000:1
N/A
N/A
500000:1
Video formats supported
  • 480i
  • 480p
  • 576i
  • 576p
  • 720p
  • 1080i
  • 1080p
  • 2160p
  • 480i
  • 480p
  • 576i
  • 576p
  • 720p
  • 1080i
  • 1080p
  • 2160p
  • 480i
  • 480p
  • 576i
  • 576p
  • 720p
  • 1080i
  • 1080p
  • 2160p
  • 480i
  • 480p
  • 576i
  • 576p
  • 720p
  • 1080i
  • 1080p
  • 2160p
Screen size
N/A
76.2 - 30076.2 - 30034.3 - 302.4
Dynamic contrast
N/A
N/A
N/A
500000:1

Features

Quick start guideyes
N/A
N/A
N/A
Handheld remote controlyesyesyesyes
Memory card readernononono
On Screen Display (OSD)yesyes
N/A
yes
On Screen Display (OSD) languages
  • ARA
  • BUL
  • CHI
  • CHI
  • CRO
  • CZE
  • DAN
  • DUT
  • ENG
  • FIN
  • FRE
  • GRE
  • HIN
  • HUN
  • IND
  • ITA
  • JPN
  • KOR
  • NOR
  • POL
  • POR
  • RUM
  • RUS
  • SWE
  • THA
  • TUR
  • ARA
  • BUL
  • CHI
  • CHI
  • CRO
  • CZE
  • DAN
  • DEU
  • DUT
  • ENG
  • FIN
  • FRE
  • GRE
  • HIN
  • HUN
  • IND
  • ITA
  • JPN
  • KOR
  • NOR
  • POL
  • POR
  • RUM
  • RUS
  • SWE
  • THA
  • TUR
N/A
  • CHI
  • DEU
  • ENG
  • ESP
  • FRE
  • ITA
  • JPN
  • POR
  • RUS
Smart TVnonono
N/A
Password protection
N/A
N/A
N/A
yes

Communication

Ethernet connectionnononoyes
Wireless network (Wi-Fi)nononono
Number of Ethernet LAN (RJ-45) ports
N/A
N/A
N/A
1

Compatibility

3D support (3D-Ready)yes
N/A
N/A
yes
Supported 3D formats
  • Frame Sequential
  • Frame packing
  • Side by side
  • Top and bottom
N/A
N/A
N/A
Glasses includedyes
N/A
N/A
N/A
HD readyyes
N/A
N/A
yes
Full HD (HD ready 1080p)yesyesyesyes
HDRyesyes
N/A
yes
HDR Format
N/A
  • High Dynamic Range 10
  • Hybrid Log-Gamma
N/A
N/A
Analog signal format system
N/A
  • NTSC
  • SECAM
  • PAL
N/A
N/A

Audio features

Built-in speakersyesyesyesyes
Number of built-in speakers1122
RMS rated power5.0 W5.0 W10.0 W5.0 W

Power

Operational Power Consumption (min-max)< 330
N/A
N/A
N/A
Power consumption (typical)330.0 W330.0 W340.0 W
N/A
Power consumption (standby)0.5 W0.5 W0.5 W0.5 W
Power consumption (economy mode)
N/A
250.0 W280.0 W
N/A
Power consumption (max)
N/A
385.0 W350.0 W305.0 W

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