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Optoma GT770 Review | 85 Data compared

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  • Avg. price in UK: ~£830
  • Avg. price in US: ~$800
  • ANSI lumens: 3600
  • Native panel resolution: 1280x720
  • Throw ratio: 0.52:1

Optoma GT770 review. Compare 85 technical specifications and user reviews to see how it ranks among projectors and if it is worth buying.

5.8

Overall score

What it is: An overall evaluation of the projector's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best projectors on the market.

Score components:

90.0%

5.6

Technical Score

10.0%

7.2

User score

Good
5.6

Technical Score

What it is: An assessment of the projector's technical performance, covering eight key areas: image quality, brightness, contrast, connectivity, gaming features, smart features, audio, and design.

When it matters: When you want to compare projectors based on technical performance and available features.

Score components:

42.0%

6.6

Image Quality

22.0%

5.8

Projection & Lens

12.0%

4.4

HDMI & Gaming

10.0%

4.4

Audio & Features

8.0%

3.8

Connectivity

6.0%

4.9

Design & Power

Good
7.2

User score

What it is: A rating that combines user reviews and the total number of reviews received by the projector.

When it matters: When you want to know how a projector performs in real use and how reliable it remains over time according to user feedback.

Score components:

70.0%

7.8

User reviews

30.0%

5.8

Popularity

User score:
United Kingdom
amazon
3.9
(73)

(Reviews last updated: June 2026)

Very good
  • 6.0
    Gaming

    Score components:

    35.0%

    ?

    Input lag

    25.0%

    4.8

    Refresh rate

    20.0%

    7.2

    Output Resolution

    10.0%

    1.0

    HDR10 support

    10.0%

    5.0

    Audio output power

  • 5.1
    Portable

    Score components:

    35.0%

    8.8

    Weight

    20.0%

    ?

    Has A Built-In Speaker

    15.0%

    1.0

    Bluetooth connectivity

    15.0%

    1.0

    Wi-Fi connectivity

    15.0%

    1.0

    Smart TV features

  • 4.9
    Home theatre

    Score components:

    30.0%

    7.2

    Output Resolution

    25.0%

    1.0

    HDR10 support

    20.0%

    1.0

    Dolby Vision support

    15.0%

    9.7

    ANSI lumens

    10.0%

    8.6

    Audible noise

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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Optoma GT770 is a short-throw DLP projector featuring a native WXGA (1280 x 720) resolution, 3,600 ANSI lumens of brightness, and a high 20,000:1 contrast ratio. Its 0.52:1 throw ratio allows it to project a massive 100-inch image from less than four feet away, making it ideal for gaming and movies in small spaces. Key characteristics include Full 3D support, MHL connectivity for mobile devices, and a lamp life of up to 10,000 hours in Eco mode. Main advantages are its excellent brightness for 'lights-on' viewing, portable design at 6.7 lbs, and low 28dB audible noise in Eco mode. However, notable drawbacks include its lack of native Full HD (1080p) resolution, mono rather than stereo speakers, and the absence of modern smart features like built-in Wi-Fi or streaming apps.

Technical Specifications of Optoma GT770

Technical Score

What it is: An assessment of the projector's technical performance, covering eight key areas: image quality, brightness, contrast, connectivity, gaming features, smart features, audio, and design.

When it matters: When you want to compare projectors based on technical performance and available features.

Score components:

42.0%

6.6

Image Quality

22.0%

5.8

Projection & Lens

12.0%

4.4

HDMI & Gaming

10.0%

4.4

Audio & Features

8.0%

3.8

Connectivity

6.0%

4.9

Design & Power

5.6
Optoma GT770 has a technical score of 5.62 points, which is lower than 59.8% of projectors.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the projector.

When it matters: When you want to know how a projector performs in real use and how reliable it remains over time according to user feedback.

Score components:

70.0%

7.8

User reviews

30.0%

5.8

Popularity

User score:
United Kingdom
amazon
3.9
(73)

(Reviews last updated: June 2026)

7.2
Optoma GT770 has a user score of 7.21 points, which is lower than 79.1% of projectors.
Popularity
What it is: An indicator based on the number of reviews received by the projector.
When it matters: When you prefer to buy a product chosen and reviewed by many other consumers.
5.8
Optoma GT770 has a popularity of 5.8 points, which is higher than 71.6% of products in this category.
Ratio quality/price

What it is: An indicator that combines the projector's overall rating with its cost.

When it matters: When you are looking for a projector with a good balance between quality and price.

Score components:

60.0%

5.8

Overall score

40.0%

6.1

Price

5.9
Optoma GT770 has a quality-to-price ratio of 5.9 points, which is lower than 56.1% of products in this category.
ANSI lumens
What it is: Brightness output measured in ANSI lumens.
When it matters: When you watch with ambient light or on a large screen, higher brightness matters.

Importance: HIGH

3,600
Optoma GT770 reaches 3600 ANSI lumens, brighter than 82.3% of projectors and equal to 1.8% of projectors.
Contrast ratio
What it is: Ratio of brightest white to darkest black displayed by the projector.
When it matters: When you watch movies in a dark room, stronger contrast matters.

Importance: HIGH

20,000:1
Optoma GT770 has a contrast ratio of 20000:1, higher than 59.1% of projectors and equal to 3.9% of projectors.
Dynamic contrast ratio.
Native panel resolution
What it is: Native resolution of the display panel or imaging device.
When it matters: When picture sharpness matters enough that you want to know the projector's true native imaging resolution, not just supported input formats.

Importance: HIGH

1280x720
Optoma GT770 uses a native resolution of 1280x720, lower than 82.6% of projectors and equal to 5.5% of projectors.
Output Resolution
What it is: The resolution the projector can actually display through its imaging system.
When it matters: When you want to know the actual image detail the projector can put on screen rather than just the source format it accepts.

Importance: HIGH

1280x800
Optoma GT770 supports output resolution up to 1280x800, lower than 75.9% of projectors and equal to 7.9% of projectors.
Projection technology
What it is: Projection imaging technology used by the projector.
When it matters: When color character, contrast behavior, and overall image personality matter before you compare brightness alone.

Importance: MEDIUM

DLP
Show more
Throw ratio
What it is: Ratio between projection distance and image width.
When it matters: When room size and screen size have to match properly instead of guessing whether the projector will fit the space.

Importance: MEDIUM

0.52:1
Min throw distance
What it is: Minimum distance required between projector and screen.
When it matters: When room depth is limited and you still need a large image from a short placement distance.

Importance: MEDIUM

0.4 m
Optoma GT770 needs a minimum throw distance of 0.4 m, shorter than 93.7% of projectors and equal to 0.8% of projectors.
Max projection size
What it is: Maximum supported image size for projection, measured diagonally.
When it matters: When you want a cinema-size picture, maximum projection size matters.

Importance: MEDIUM

303 inch
Optoma GT770 supports projection sizes up to 303 inch, larger than 93.5% of projectors and equal to 0.2% of projectors.
Zoom ratio
What it is: Optical zoom capability expressed as a ratio.
When it matters: When projector placement is not ideal and you need optical zoom to frame the image correctly.

Importance: MEDIUM

N/A
Motorized zoom
What it is: Motorized control of the optical zoom function.
When it matters: When the projector position is fixed but screen size or framing still needs to be adjusted from a distance.

Importance: LOW

yes
Optoma GT770 has motorized zoom. 83.8% of projectors have motorized zoom.
Show more
Input lag
What it is: Time delay between input signal and displayed image, measured in milliseconds.
When it matters: When gaming responsiveness matters and you want controls to feel more immediate on fast titles.

Importance: MEDIUM

?
Auto low latency mode (ALLM)
What it is: Automatically reduces input lag when gaming.
When it matters: When you play fast games, lower latency matters.

Importance: LOW

no
Optoma GT770 does not support ALLM. 20.3% of projectors support ALLM.
Variable refresh rate (VRR)
What it is: Support for variable refresh rate to reduce screen tearing.
When it matters: When gaming matters and you want the projector to handle variable frame rates with less tearing or stutter.

Importance: LOW

no
Optoma GT770 does not support VRR. 1.9% of projectors support VRR.
HDMI version
What it is: Version of the HDMI standard supported.
When it matters: When source devices push newer HDMI features, refresh rates, or bandwidth levels that older ports may limit.

Importance: LOW

1.4
Optoma GT770 supports HDMI 1.4, older than 54.6% of projectors and equal to 34.1% of projectors.
Max HDMI bandwidth
What it is: Maximum bandwidth supported by HDMI inputs, measured in Gbps.
When it matters: When newer consoles, gaming PCs, or media boxes need more HDMI throughput than older projectors can handle.

Importance: LOW

10.2 Gbps
Optoma GT770 supports HDMI bandwidth up to 10.2 Gbps, lower than 52.1% of projectors and equal to 45.4% of projectors.
Show more
N. of HDMI ports
What it is: Number of available HDMI input ports.
When it matters: When you need a console, streamer, set-top box, and another source connected at the same time without swapping cables.

Importance: LOW

2
Optoma GT770 has 2 HDMI port/s, more than 45.5% of projectors and equal to 47% of projectors.
Wi-Fi connectivity
What it is: Support for Wi-Fi network connectivity.
When it matters: When the projector should handle network features, updates, or streaming functions without needing wired Ethernet only.

Importance: LOW

no
Optoma GT770 does not support Wi-Fi. 52.7% of projectors support Wi-Fi.
Wi-Fi version
What it is: Supported Wi-Fi standard version.
When it matters: When wireless stability and throughput matter for streaming, updates, or projector ecosystem features.

Importance: LOW

N/A
Bluetooth connectivity
What it is: Support for Bluetooth wireless connectivity.
When it matters: When you plan to pair wireless speakers, headphones, remotes, or other accessories directly with the projector.

Importance: LOW

no
Optoma GT770 does not support Bluetooth. 50% of projectors support Bluetooth.
Bluetooth version
What it is: Supported Bluetooth version.
When it matters: When wireless accessory compatibility and connection quality matter beyond Bluetooth being a simple checkbox.

Importance: LOW

N/A
Show more
Smart TV features
What it is: Includes built-in Smart TV functions or operating system.
When it matters: When you prefer built-in apps and streaming convenience instead of adding an external media stick or box.

Importance: LOW

no
Optoma GT770 does not have smart TV features. 43.8% of projectors have smart TV features.
Operating system
What it is: The built-in software platform that runs the projector interface, streaming apps, and smart features.
When it matters: When you care about which apps are available, how modern the smart interface feels, and whether the projector includes a built-in streaming platform.

Importance: LOW

none
Android OS

Importance: MEDIUM

no
Dedicated smartphone app
What it is: Availability of a dedicated smartphone control app.
When it matters: When you want setup, input switching, or basic control handled from your phone without always reaching for a remote.

Importance: LOW

no
Optoma GT770 does not come with a dedicated smartphone app. 35.6% of projectors come with a dedicated smartphone app.
Remote control
What it is: Comes with a dedicated remote control for operation.
When it matters: When you want easier everyday control without extra gear, built-in convenience features matter.

Importance: LOW

yes
Optoma GT770 includes a remote control. 1.6% of projectors include a remote control.
Show more
Light source type
What it is: Type of light source used by the projector.
When it matters: When maintenance expectations, startup behavior, brightness stability, and long-term running costs all matter in the buying decision.

Importance: LOW

lamp
Optoma GT770 uses lamp light source technology, less advanced than 67.1% of projectors and equal to 33% of projectors.
Metal Halide bulb.
Laser Light Source
What it is: Whether the projector uses a laser light source instead of a traditional lamp.
When it matters: When lower maintenance, faster startup, and a lamp-free light engine matter over the long term.

Importance: LOW

no
Optoma GT770 does not use a laser light source. 28.1% of projectors use a laser light source.
Lamp life
What it is: Expected operational lifespan of the lamp in standard mode, measured in hours.
When it matters: When you care about running costs and maintenance intervals, light-source lifespan matters.

Importance: LOW

4,000 hours
Optoma GT770 offers lamp life of 4000 hours, longer than 77.2% of projectors and equal to 9.9% of projectors.
Lamp life (eco mode)
What it is: Expected operational lifespan of the lamp in eco mode, measured in hours.
When it matters: When you care about running costs and maintenance intervals, light-source lifespan matters.

Importance: LOW

10,000 hours
Optoma GT770 offers eco-mode lamp life of 10000 hours, longer than 69.5% of projectors and equal to 6.8% of projectors.
Operating power consumption
What it is: Average power consumption during normal operation.
When it matters: When electricity use and heat output matter because the projector runs for long sessions or frequent daily use.

Importance: LOW

243 W
Optoma GT770 uses 243 W of power, more than 52.6% of projectors and equal to 0.1% of projectors.
Typical power draw.
Show more

Optoma GT770 vs the average projector

  • 63.6% brighter image
    Optoma GT770 has higher ANSI lumens than the average projector (3,600 vs 2,200). The average projector has 2,200 ANSI lumens.
    What it is: Brightness output measured in ANSI lumens.
    When it matters: When you watch with ambient light or on a large screen, higher brightness matters.

    Importance: HIGH

    Optoma GT770 has higher ANSI lumens than the average projector (3,600 vs 2,200). The average projector has 2,200 ANSI lumens.3,600 vs 2,200
  • 53 inch larger image size
    Optoma GT770 has a higher projection size than the average projector (303 inch vs 250 inch). The average projector has 250 inch of projection size.
    What it is: Maximum supported image size for projection, measured diagonally.
    When it matters: When you want a cinema-size picture, maximum projection size matters.

    Importance: MEDIUM

    Optoma GT770 has a higher projection size than the average projector (303 inch vs 250 inch). The average projector has 250 inch of projection size.303 inch vs 250 inch
  • Has motorized zoom
    Optoma GT770 has motorized zoom, while the average projector does not. 16.3% of projectors have motorized zoom.
    What it is: Motorized control of the optical zoom function.
    When it matters: When the projector position is fixed but screen size or framing still needs to be adjusted from a distance.

    Importance: LOW

    Optoma GT770 has motorized zoom, while the average projector does not. 16.3% of projectors have motorized zoom.
  • 0.66 m shorter throw distance
    Optoma GT770 has a lower throw distance than the average projector (0.4 m vs 1.06 m). The average projector has 1.06 m of throw distance.
    What it is: Minimum distance required between projector and screen.
    When it matters: When room depth is limited and you still need a large image from a short placement distance.

    Importance: MEDIUM

    Optoma GT770 has a lower throw distance than the average projector (0.4 m vs 1.06 m). The average projector has 1.06 m of throw distance.0.4 m vs 1.06 m
  • Advanced focus control
    Optoma GT770 offers Advanced focus control than the average projector (motorized vs manual). The average projector uses manual focus control.
    What it is: Type of focus adjustment used by the projector.
    When it matters: When you change screen size or distance often, easier focus adjustment matters.

    Importance: MEDIUM

    Optoma GT770 offers Advanced focus control than the average projector (motorized vs manual). The average projector uses manual focus control.motorized vs manual
  • 0.18 inch larger DMD chip
    Optoma GT770 has a higher DMD chip size than the average projector (0.7 inch vs 0.47 inch). The average projector has 0.47 inch of DMD chip size.
    What it is: Size of the DMD chip, measured in inches.
    When it matters: When fine image detail matters and you want more hardware context behind how sharp the picture may look on a large screen.

    Importance: LOW

    Optoma GT770 has a higher DMD chip size than the average projector (0.7 inch vs 0.47 inch). The average projector has 0.47 inch of DMD chip size.0.65 inch vs 0.47 inch
  • 1 more audio input ports
    Optoma GT770 has more audio input ports than the average projector (1 vs 0). The average projector has 0 audio input ports.
    What it is: Number of analog audio input ports available.
    When it matters: When you connect several devices at the same time, port count matters.

    Importance: LOW

    Optoma GT770 has more audio input ports than the average projector (1 vs 0). The average projector has 0 audio input ports.1 vs 0
  • 1 more RJ45 ports
    Optoma GT770 has more RJ45 ports than the average projector (1 vs 0). The average projector has 0 RJ45 ports.
    What it is: Number of RJ-45 Ethernet ports available.
    When it matters: When wired network or control connections matter and one Ethernet jack may not be enough for the setup.

    Importance: LOW

    Optoma GT770 has more RJ45 ports than the average projector (1 vs 0). The average projector has 0 RJ45 ports.1 vs 0
  • 63.6% brighter image
    Optoma GT770 has higher ANSI lumens than the average projector (3,600 vs 2,200). The average projector has 2,200 ANSI lumens.
  • 0.18 inch larger DMD chip
    Optoma GT770 has a higher DMD chip size than the average projector (0.7 inch vs 0.47 inch). The average projector has 0.47 inch of DMD chip size.
  • Higher contrast ratio
    Optoma GT770 has a higher contrast ratio than the average projector (20000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
  • 53 inch larger image size
    Optoma GT770 has a higher projection size than the average projector (303 inch vs 250 inch). The average projector has 250 inch of projection size.
  • Has motorized zoom
    Optoma GT770 has motorized zoom, while the average projector does not. 16.3% of projectors have motorized zoom.
  • 0.66 m shorter throw distance
    Optoma GT770 has a lower throw distance than the average projector (0.4 m vs 1.06 m). The average projector has 1.06 m of throw distance.
  • Advanced focus control
    Optoma GT770 offers Advanced focus control than the average projector (motorized vs manual). The average projector uses manual focus control.
  • 1 more RJ45 ports
    Optoma GT770 has more RJ45 ports than the average projector (1 vs 0). The average projector has 0 RJ45 ports.
  • Includes VGA
    Optoma GT770 includes VGA input, while the average projector does not. 43.1% of projectors include VGA input.
  • 1 more audio input ports
    Optoma GT770 has more audio input ports than the average projector (1 vs 0). The average projector has 0 audio input ports.
  • 2 dB quieter operation
    Optoma GT770 has a lower audible noise than the average projector (28 dB vs 30 dB). The average projector has 30 dB of audible noise.
  • 2 dB quieter eco mode
    Optoma GT770 has a lower audible noise in eco mode than the average projector (26 dB vs 28 dB). The average projector has 28 dB of audible noise in eco mode.

Total
Image Quality
Projection & Lens
Connectivity
Audio & Features
Design & Power
  • No HDR10 support
    Optoma GT770 does not support HDR10, while the average projector does. 56.3% of projectors support HDR10.
  • Low native resolution
    Optoma GT770 has a lower native panel resolution than the average projector (1280x720 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.
  • Lower output resolution
    Optoma GT770 supports a lower output resolution than the average projector (1280x800 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
  • 10 degrees less vertical keystone correction
    Optoma GT770 offers less vertical keystone correction than the average projector (20 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of vertical keystone correction.
  • Limited HDMI format
    Optoma GT770 supports a less capable max HDMI input format than the average projector (1080p/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
  • 43.3% lower HDMI bandwidth
    Optoma GT770 has a lower HDMI bandwidth than the average projector (10.2 Gbps vs 18 Gbps). The average projector has 18 Gbps of HDMI bandwidth.
  • Older HDMI version
    Optoma GT770 has Old HDMI standard than the average projector (1.4 vs 2.0). The average projector supports HDMI 2.0.
  • No Wi-Fi support
    Optoma GT770 does not support Wi-Fi, while the average projector does. 52.6% of projectors support Wi-Fi.
  • Basic light source
    Optoma GT770 has Basic light source than the average projector (lamp vs laser). The average projector uses a laser light source.
    Metal Halide bulb.
  • 16,000 hours shorter lamp life
    Optoma GT770 has a lower lamp life than the average projector (4,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life.
  • 10,000 hours shorter eco lamp life
    Optoma GT770 has a lower lamp life in eco mode than the average projector (10,000 hours vs 20,000 hours). The average projector has 20,000 hours of lamp life in eco mode.
  • 99 mm thicker body
    Optoma GT770 is thicker than the average projector (244 mm vs 145 mm). The average projector has a thickness of 145 mm.
  • No HDR10 support
    Optoma GT770 does not support HDR10, while the average projector does. 56.3% of projectors support HDR10.
    What it is: Support for HDR10 high dynamic range standard.
    When it matters: When you want the projector to handle mainstream HDR movie and streaming content instead of standard dynamic range only.

    Importance: MEDIUM

    Optoma GT770 does not support HDR10, while the average projector does. 56.3% of projectors support HDR10.
  • Limited HDMI format
    Optoma GT770 supports a less capable max HDMI input format than the average projector (1080p/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
    What it is: Highest HDMI input format supported by the projector.
    When it matters: When you want to confirm the exact signal format the projector can accept from high-end modern sources.

    Importance: MEDIUM

    Optoma GT770 supports a less capable max HDMI input format than the average projector (1080p/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.1080p/60Hz vs 4K/120Hz
  • Basic light source
    Optoma GT770 has Basic light source than the average projector (lamp vs laser). The average projector uses a laser light source.
    Metal Halide bulb.
    What it is: Type of light source used by the projector.
    When it matters: When maintenance expectations, startup behavior, brightness stability, and long-term running costs all matter in the buying decision.

    Importance: LOW

    Optoma GT770 has Basic light source than the average projector (lamp vs laser). The average projector uses a laser light source.lamp vs laser
  • Low native resolution
    Optoma GT770 has a lower native panel resolution than the average projector (1280x720 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.
    What it is: Native resolution of the display panel or imaging device.
    When it matters: When picture sharpness matters enough that you want to know the projector's true native imaging resolution, not just supported input formats.

    Importance: HIGH

    Optoma GT770 has a lower native panel resolution than the average projector (1280x720 vs 1920x1080). The average projector has a native panel resolution of 1920x1080.1280x720 vs 1920x1080
  • Lower output resolution
    Optoma GT770 supports a lower output resolution than the average projector (1280x800 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
    What it is: The resolution the projector can actually display through its imaging system.
    When it matters: When you want to know the actual image detail the projector can put on screen rather than just the source format it accepts.

    Importance: HIGH

    Optoma GT770 supports a lower output resolution than the average projector (1280x800 vs 1920x1080). The average projector outputs at 1920x1080 resolution.1280x800 vs 1920x1080
  • 43.3% lower HDMI bandwidth
    Optoma GT770 has a lower HDMI bandwidth than the average projector (10.2 Gbps vs 18 Gbps). The average projector has 18 Gbps of HDMI bandwidth.
    What it is: Maximum bandwidth supported by HDMI inputs, measured in Gbps.
    When it matters: When newer consoles, gaming PCs, or media boxes need more HDMI throughput than older projectors can handle.

    Importance: LOW

    Optoma GT770 has a lower HDMI bandwidth than the average projector (10.2 Gbps vs 18 Gbps). The average projector has 18 Gbps of HDMI bandwidth.10.2 Gbps vs 18 Gbps
  • No Wi-Fi support
    Optoma GT770 does not support Wi-Fi, while the average projector does. 52.6% of projectors support Wi-Fi.
    What it is: Support for Wi-Fi network connectivity.
    When it matters: When the projector should handle network features, updates, or streaming functions without needing wired Ethernet only.

    Importance: LOW

    Optoma GT770 does not support Wi-Fi, while the average projector does. 52.6% of projectors support Wi-Fi.
  • Older HDMI version
    Optoma GT770 has Old HDMI standard than the average projector (1.4 vs 2.0). The average projector supports HDMI 2.0.
    What it is: Version of the HDMI standard supported.
    When it matters: When source devices push newer HDMI features, refresh rates, or bandwidth levels that older ports may limit.

    Importance: LOW

    Optoma GT770 has Old HDMI standard than the average projector (1.4 vs 2.0). The average projector supports HDMI 2.0.1.4 vs 2.0
Total
Overall
Image Quality
Projection & Lens
HDMI & Gaming
Connectivity
Design & Power

Graphic comparison of Optoma GT770 and

Attribute category
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Third-party reviews

United Kingdom
amazon
3.9
73 Reviews

(Reviews last updated: June 2026)

What customers like about Optoma GT770?

  • High brightness of 3,600 ANSI lumens, suitable for rooms with some ambient light
  • Short-throw lens allows for large 120-inch images from less than five feet away
  • Long lamp life of up to 10,000 hours in eco mode
  • Excellent for gaming with low input lag and Full 3D support
  • Features motorized focus and motorized zoom for easier setup
  • Quiet operation at approximately 28 dB (26 dB in eco mode)
  • Includes vertical and horizontal lens shift for flexible placement

What customers dislike about Optoma GT770?

  • Native resolution is limited to WXGA (1280x720/800), which is lower than 1080p or 4K
  • Expert technical sites like ProjectorCentral have issued a 'Buyer Beware' warning regarding the manufacturer's cited brightness accuracy
  • Lacks built-in smart features like Wi-Fi, Bluetooth, or integrated streaming apps
  • No longer officially offered or manufactured by Optoma
  • Some general user feedback for the brand suggests potential long-term reliability and customer support issues

Expert reviews

S
scribd.com
30/07/2025
Chip Italy 1013

The Chip Italy 1013 magazine issue features a hardware review of the Apple MacBook Air 2013 (11.6" and 13.3" models) equipped with an Intel Core i5-4250U processor and Intel HD 5000 graphics. The review highlights the laptop's exceptional battery life, which exceeds 12 hours on a single charge for the 13.3" version and 8 hours for the 11.6" model during standard usage. Additionally,...Read more

(Translated)Show original

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viewsonic-pjb716k
ViewSonic PJB716K

Projectors

6.7
dangbei-mars
Dangbei Mars

Projectors

7.8
epson-ef-100b
Epson Ef 100B

Projectors

6.3
ultimea-poseidon-e100
ULTIMEA Poseidon E100

Projectors

6.9
optoma-uhd30
Optoma UHD30

Projectors

6.3
epson-lifestudio-flex
Epson Lifestudio Flex

Projectors

6.9
benq-gp520
BenQ GP520

Projectors

8.0
viewsonic-lx700-4k
ViewSonic LX700 4K

Projectors

7.2

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