OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Projectors Methodology v3.0
Projectors Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Projectors Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Projectors Methodology v3.0

Optoma HD91 review: 86 specs compared

Avg. price:~£3,040Native panel resolution:1920x1080ANSI lumens:1000Throw ratio:1.5-2.89:1Lamp life:20000 hours

Optoma HD91 Review: Compare 86 technical specifications and 9 expert reviews to see how this product ranks in the Projectors category and whether it is worth buying.

Optoma HD91
7.0/10

Overall score

Score
7.0/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, best-of lists, expert reviews and owners.
How we count it
Parts: Technical score 35%, List score 30%, Reviews score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 58% of models
Score components

35%

5.8

Technical score

30%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

25%

8.3

Reviews score

10%

?

Sentiment scoreNot enough data yet, so we use 6.8, the mark of a weaker model in this category

▼Worse than 58% of projectors
5.2

Value for money

Value for money
5.2/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
▼ Worse than 98% of models
Score components

70%

7.0

Overall score

30%

1.0

Price

▼Worse than 98%
5.8

Technical score

Technical score
5.8/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 81% of models
Score components

42%

6.3

Image Quality

22%

5.8

Projection & Lens

12%

4.8

HDMI & Gaming

10%

4.9

Audio & Features

8%

5.2

Connectivity

6%

6.7

Design & Power

▼Worse than 81%
8.3

Reviews score

Reviews score
8.3/ 10
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
Share: Reviews count 25% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▲ Better than 51% of models

80%

8.3

Average grade

20%

8.2

Popularity

Grades by review (9)
9 reviews: 5 with a printed score, 4 estimated from the review. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
▲Better than 51%
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 30% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • optoma-hd91
optoma-hd91
Where to buy
    N/A~ £3,040
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.

What reviewers say about the Optoma HD91

Based on 8

Reviewers love the long lamp life and quiet fan, but agree it's too dim, with weak blacks and contrast.
Praised
Mixed views
Criticised
Pick a topic to see who said what
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Technical Specifications of projector Optoma HD91

Technical score
Technical score
5.8/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
▼
<55-66-77-88-99-10
▼ Worse than 81% of models
Score components:

42%

6.3

Image Quality

22%

5.8

Projection & Lens

12%

4.8

HDMI & Gaming

10%

4.9

Audio & Features

8%

5.2

Connectivity

6%

6.7

Design & Power

5.8
Reviews score
8.3
List score
?
Value for money
Value for money
5.2/ 10
✕
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 distribution
▼
<55-66-77-88-99-10
▼ Worse than 98% of models
Score components:

70%

7.0

Overall score

30%

1.0

Price

5.2
ANSI lumens
1,000
Market range: <280 – >4k
This projector reaches 1,000 ANSI lumens, dimmer than 67.1% of projectors and equal to 2.6% of projectors.
Contrast ratio
500,000:1
This projector has a contrast ratio of 500000:1, higher than 82.5% of projectors and equal to 1.8% of projectors.
Dynamic contrast ratio.
Native panel resolution
1920x1080
This projector uses a native resolution of 1920x1080, higher than 27% of projectors and equal to 59.2% of projectors.
Output resolution
1920x1080
This projector supports output resolution up to 1920x1080, higher than 25.9% of projectors and equal to 42.3% of projectors.
Supports 4K input.
Projection technology
DLP
Show more
What reviewers say
Throw ratio
1.5-2.89:1
Min throw distance
1.5 m
Market range: <0.5 m – >1.651 m
This projector needs a minimum throw distance of 1.5 m, longer than 80.5% of projectors and equal to 5.8% of projectors.
Max projection size
300 inch
Market range: <120 inch – >301 inch
This projector supports projection sizes up to 300 inch, larger than 51.5% of projectors and equal to 38% of projectors.
Zoom ratio
1.9
Market range: <1.1 – >2.06
This projector offers a zoom ratio of 1.9, wider than 84.1% of projectors.
Motorized zoom
no
This projector does not have motorised zoom. 14.8% of projectors offer this.
Show more
Input lag
76 ms
Market range: <8 ms – >68 ms
This projector has input lag of 76 ms, higher than 92.2% of projectors and equal to 0.2% of projectors.
Auto low latency mode (ALLM)
no
This projector does not switch to low-latency mode automatically. 16.1% of projectors offer this.
Variable refresh rate (VRR)
no
This projector does not support variable refresh rate. 1.8% of projectors offer this.
HDMI version
1.4
This projector supports HDMI 1.4, older than 54% of projectors and equal to 35.7% of projectors.
Max HDMI bandwidth
10.2 Gbps
Market range: <10.2 Gbps – >48 Gbps
This projector supports HDMI bandwidth up to 10.2 Gbps, lower than 51.2% of projectors and equal to 46.5% of projectors.
Show more
N. of HDMI ports
2
Market range: <1 – >2
This projector has 2 HDMI port/s, more than 45.9% of projectors and equal to 47.3% of projectors.
Wi-Fi connectivity
no
This projector does not connect to Wi-Fi networks. 53.4% of projectors offer this.
Wi-Fi version
N/A
Bluetooth connectivity
no
This projector does not support Bluetooth. 50.7% of projectors offer this.
Bluetooth version
N/A
Show more
Smart TV features
no
This projector does not have built-in smart TV features. 43.9% of projectors offer this.
Operating system
none
Android OS
no
This projector does not run Android OS. 19.1% of projectors run Android OS.
Dedicated smartphone app
no
This projector does not come with a dedicated smartphone app. 36.8% of projectors come with a dedicated smartphone app.
Remote control
yes
This projector includes a remote control. 1.5% of projectors offer this.
Show more
Light source type
led
This projector uses led light source technology, more advanced than 33.6% of projectors and equal to 39.9% of projectors.
Laser light source
no
This projector does not have a laser light source. 26.8% of projectors offer this.
Lamp life
20,000 hours
Market range: <3.5k hours – >30k hours
This projector offers lamp life of 20,000 hours, shorter than 35.2% of projectors and equal to 25.8% of projectors.
LED light source life.
Lamp life (eco mode)
20,000 hours
Market range: <5k hours – >30k hours
This projector offers eco-mode lamp life of 20,000 hours, shorter than 39.4% of projectors and equal to 17.9% of projectors.
Eco mode rating.
Operating power consumption
250 W
Market range: <57 W – >390 W
This projector uses 250 W of power, more than 54.7% of projectors and equal to 1.3% of projectors.
Normal mode power draw.
Show more
What reviewers say

Optoma HD91 vs the average projector

246810TotalImage QualityProjection & LensHDMI & GamingConnectivityAudio & FeaturesDesign & Power
  • Higher contrast ratio
    This projector has a higher contrast ratio than the average projector (500000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
    Dynamic contrast ratio.
    500,000:1 vs 10,000:1
  • 0.6 2x wider zoom range
    This projector has a higher zoom ratio than the average projector (1.9 vs 1.3). The average projector has 1.3 of zoom ratio.
    1.9 vs 1.3
  • 8 dB quieter operation
    This projector has a lower audible noise than the average projector (23 dB vs 31 dB). The average projector has 31 dB of audible noise.
    Eco mode figure.
    23 dB vs 31 dB
  • Supports motion smoothing
    This projector supports motion smoothing, while the average projector does not. 34.1% of projectors offer this.
    Via PureMotion.
  • 0.18 inch larger DMD chip
    This projector 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
  • 5 dB quieter eco mode
    This projector has a lower audible noise in eco mode than the average projector (23 dB vs 28 dB). The average projector has 28 dB of audible noise in eco mode.
    Eco mode figure.
    23 dB vs 28 dB
  • 1 more USB ports
    This projector has more USB ports than the average projector (2 vs 1). The average projector has 1 USB ports.
    2 vs 1
  • 50 inch larger image size
    This projector has a higher projection size than the average projector (300 inch vs 250 inch). The average projector has 250 inch of projection size.
    300 inch vs 250 inch
  • 12.2% higher review score
    Reviews score
    8.3/ 10
    ✕
    What it is
    Average grade from independent test sites, magazines and video reviewers, 1–10.
    How we count it
    Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Big test sites count more, short reviews half as much as full tests. A video review counts half.
    Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
    Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.8 for now.
    Share: Reviews count 25% of the overall score.
    Score distribution
    ▼
    <55-66-77-88-99-10
    ▲ Better than 51% of models

    80%

    8.3

    Average grade

    20%

    8.2

    Popularity

    Grades by review (9)
    9 reviews: 5 with a printed score, 4 estimated from the review. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    8.3 vs 7.4
  • Higher contrast ratio
    This projector has a higher contrast ratio than the average projector (500000:1 vs 10000:1). The average projector has 10000:1 of contrast ratio.
    Dynamic contrast ratio.
    500,000:1 vs 10,000:1
  • 0.18 inch larger DMD chip
    This projector 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
  • 0.6 2x wider zoom range
    This projector has a higher zoom ratio than the average projector (1.9 vs 1.3). The average projector has 1.3 of zoom ratio.
    1.9 vs 1.3
  • 50 inch larger image size
    This projector has a higher projection size than the average projector (300 inch vs 250 inch). The average projector has 250 inch of projection size.
    300 inch vs 250 inch
  • Supports motion smoothing
    This projector supports motion smoothing, while the average projector does not. 34.1% of projectors offer this.
    Via PureMotion.
  • 1 more USB ports
    This projector has more USB ports than the average projector (2 vs 1). The average projector has 1 USB ports.
    2 vs 1
  • VGA input included
    This projector supports VGA input, while the average projector does not. 44.1% of projectors support VGA input.
  • 8 dB quieter operation
    This projector has a lower audible noise than the average projector (23 dB vs 31 dB). The average projector has 31 dB of audible noise.
    Eco mode figure.
    23 dB vs 31 dB
  • 5 dB quieter eco mode
    This projector has a lower audible noise in eco mode than the average projector (23 dB vs 28 dB). The average projector has 28 dB of audible noise in eco mode.
    Eco mode figure.
    23 dB vs 28 dB
  • Limited HDMI format
    This projector 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
  • No HDR10 support
    This projector does not support HDR10, while the average projector does. 57.6% of projectors support HDR10.
  • 54.5% dimmer image
    This projector has lower ANSI lumens than the average projector (1,000 vs 2,200). The average projector has 2,200 ANSI lumens.
    1,000 vs 2,200
  • 20 % less horizontal lens shift
    This projector has fewer horizontal lens shift than the average projector (10 % vs 30 %). The average projector has 30 % horizontal lens shift.
    10 % vs 30 %
  • Basic light source
    This projector has Basic light source than the average projector (led vs laser). The average projector uses a laser light source.
    led vs laser
  • 49 ms higher input lag
    This projector has a higher input lag than the average projector (76 ms vs 27 ms). The average projector has 27 ms of input lag.
    76 ms vs 27 ms
  • 43.3% lower HDMI bandwidth
    This projector 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 connectivity
    This projector does not connect to Wi-Fi networks, while the average projector does. 53.4% of projectors offer this.
  • 33.1% worse value for money
    Optoma HD91 has a lower value-for-money score than the average projector (5.22 vs 6.9).
    5.22 vs 6.95
  • 4.61x more expensive
    Optoma HD91 is more expensive than the average projector (£3,040 vs £660).
    £3,040 vs £660
  • No HDR10 support
    This projector does not support HDR10, while the average projector does. 57.6% of projectors support HDR10.
  • 54.5% dimmer image
    This projector has lower ANSI lumens than the average projector (1,000 vs 2,200). The average projector has 2,200 ANSI lumens.
    1,000 vs 2,200
  • 7 earlier release
    This projector was released earlier than the average projector (2014 vs 2021). The average projector was released in 2021.
    January 2014
    2014 vs 2021
  • 20 % less horizontal lens shift
    This projector has fewer horizontal lens shift than the average projector (10 % vs 30 %). The average projector has 30 % horizontal lens shift.
    10 % vs 30 %
  • 0.49 m longer throw distance
    This projector has a higher throw distance than the average projector (1.5 m vs 1 m). The average projector has 1.0055 m of throw distance.
    1.5 m vs 1.0055 m
  • 4 % less vertical lens shift
    This projector has fewer vertical lens shift than the average projector (60 % vs 64 %). The average projector has 64 % vertical lens shift.
    60 % vs 64 %
  • Limited HDMI format
    This projector 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
  • 49 ms higher input lag
    This projector has a higher input lag than the average projector (76 ms vs 27 ms). The average projector has 27 ms of input lag.
    76 ms vs 27 ms
  • 43.3% lower HDMI bandwidth
    This projector 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
  • Older HDMI version
    This projector has Old HDMI standard than the average projector (1.4 vs 2). The average projector supports HDMI 2.
    1.4 vs 2
  • More outdated HDCP support
    This projector supports an older HDCP version than the average projector (1.4 vs 2.2).
    1.4 vs 2.2
  • No Wi-Fi connectivity
    This projector does not connect to Wi-Fi networks, while the average projector does. 53.4% of projectors offer this.
  • No Bluetooth connectivity
    This projector does not support Bluetooth, while the average projector does. 50.6% of projectors offer this.
  • No headphone jack
    This projector does not have a 3.5 mm audio jack, while the average projector does. 84.4% of projectors offer a 3.5 mm audio jack.
  • No built-in speaker
    This projector does not have a built-in speaker, while the average projector does. 87% of projectors have one.
  • Basic light source
    This projector has Basic light source than the average projector (led vs laser). The average projector uses a laser light source.
    led vs laser
  • 2.35x heavier weight
    This projector is heavier than the average projector (7 kg vs 2.98 kg). The average projector weighs 2.98 kg.
    7 kg vs 2.98 kg
  • 48 mm wider body
    This projector is wider than the average projector (345 mm vs 297 mm). The average projector has a width of 297 mm.
    345 mm vs 297 mm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Overview video
Not graded

Expert reviews

In-depth analysis and verdict from leading tech publications

9.0
avforums.com
✓ explicit
28/01/2014
Lab test · Accurate LED picture
Verdict
The Optoma HD91 is an accurate, well-built LED projector with excellent 3D, though it is dimmer than bulb models and its blacks are only average.
9.0
projectorcentral.com
✓ explicit
26/03/2014
Lab test · Head-to-head comparison
Verdict
The Optoma HD91 is a strong home theater projector with a lamp-free LED light, but it is dimmer than lamp-based rivals, which limits practical screen size.
8.0
trustedreviews.com
✓ explicit
08/02/2014
In-depth test · LED home cinema
Verdict
The Optoma HD91 is an LED home cinema projector with excellent color and quiet operation, but its black levels and very high input lag hold it back.
8.0
projectorreviews.com
≈ estimated
11/06/2014
Lab test · LED home theater
Verdict
The Optoma HD91 is a quiet, LED-lit home theater projector that suits a dedicated dark room, since it lacks the brightness for living rooms.
6.0
projectorreviews.com
≈ estimated
30/05/2014
First look · LED home theater
Verdict
The Optoma HD91 has vibrant color, but no mode looked accurate out of the box, and it needs a fully light-controlled room.
8.0
gadgetspeak.com
≈ estimated
18/03/2014
Hands-on review · LED home theater
Verdict
The Optoma HD91 is a cool-running LED home theater projector with strong 3D, but at 7kg it is bulky and movies still need the blinds drawn.
8.8
prad.de
✓ explicit
28/05/2014
Lab test · LED home cinema
Verdict
The Optoma HD91 is a near-silent LED projector with lens shift that costs little image quality and a 1.9x zoom, but its light output suits only darker rooms.
9.0
hifitest.de
✓ explicit
02/06/2014
Hands-on test · Quiet LED home cinema
Verdict
The Optoma HD91 is a very quiet LED projector with strong contrast and rich color in a darkened room, but its light output is limited.
8.0
mediasluis.nl
≈ estimated
09/01/2015
Hands-on review · LED home cinema
Verdict
The Optoma HD91 is a quiet LED projector with long-lasting light and wide lens shift, but its modest brightness suits only dark rooms and screens up to 100 inches.

Third-party reviews

What customers like about Optoma HD91

  • Long-lasting LED light source (20,000+ hours) with minimal brightness degradation over time
  • Excellent color performance and accuracy, especially after calibration
  • Superior motion handling with very low judder, particularly in 3D content
  • Quiet operation even at maximum brightness settings
  • Exceptional image sharpness and clarity due to high-quality optics and single-chip DLP design
  • Near-instantaneous power-on and power-off times with no warm-up/cool-down required
  • Generous setup flexibility with a 1.9x zoom and horizontal/vertical lens shift

What customers don't like about Optoma HD91

  • Mediocre black levels and shadow detail compared to bulb-based rivals at the same price point
  • Low overall brightness, making it unsuitable for large screens or rooms with ambient light
  • Extremely high input lag (approx. 102ms), making it poor for competitive gaming
  • Unstable brightness and color shifts when using 'DynamicBlack' modes to improve contrast
  • 3D performance can feel dim and fatiguing due to limited light output through active shutter glasses
  • Sluggish HDMI synchronization times when switching sources or resolutions
  • Awkwardly placed lens shift dials located on the underside of the unit

Verdict

The Optoma HD91 is a Full HD (1080p) home cinema projector featuring a three-LED light source that delivers 1,000 ANSI lumens and an exceptional 500,000:1 contrast ratio. Its key characteristics include a durable LED engine rated for 20,000 hours, a wide 1.9x manual zoom, and horizontal/vertical lens shift for flexible installation. The projector's main pros are its superb colour accuracy, near-instantaneous on/off functionality, and highly quiet operation (23dB in Eco mode). However, notable cons include relatively low brightness levels that require a dark room, mediocre black level depth, and a slow HDMI signal lock time.

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