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ViewSonic PX748 4K Review | 85 Data compared

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  • Avg. price in UK: ~£830
  • Avg. price in US: ~$1,000
  • ANSI lumens: 4000
  • Native panel resolution: 1920x1080
  • Throw ratio: 1.13-1.47:1

ViewSonic PX748 4K review. Compare 85 technical specifications and user reviews to see how it ranks among projectors and if it is worth buying.

6.8

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%

6.6

Technical Score

10.0%

8.9

User score

Good
6.6

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%

8.4

Image Quality

22.0%

5.8

Projection & Lens

12.0%

6.0

HDMI & Gaming

10.0%

3.9

Audio & Features

8.0%

5.4

Connectivity

6.0%

4.4

Design & Power

Good
8.9

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%

8.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.2
(299)

(Reviews last updated: June 2026)

Excellent
  • 9.4
    Gaming

    Score components:

    35.0%

    10

    Input lag

    25.0%

    10

    Refresh rate

    20.0%

    9.3

    Output Resolution

    10.0%

    10

    HDR10 support

    10.0%

    5.0

    Audio output power

  • 5.2
    Portable

    Score components:

    35.0%

    9.0

    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

  • 7.5
    Home theatre

    Score components:

    30.0%

    9.3

    Output Resolution

    25.0%

    10

    HDR10 support

    20.0%

    1.0

    Dolby Vision support

    15.0%

    10

    ANSI lumens

    10.0%

    5.2

    Audible noise

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Best prices in UK

Best rankings

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

Verdict

The ViewSonic PX748-4K is a high-brightness DLP projector delivering 4,000 ANSI lumens and true 4K UHD resolution (3840x2160) through XPR pixel-shifting technology. Optimized for both home cinema and competitive gaming, it features HDR/HLG support, a hyper-responsive 240Hz refresh rate, and an ultra-low 4.2ms input lag at 1080p. Its flexible setup includes a 1.3x optical zoom, H/V keystone, and 4-corner warping adjustment, while connectivity is bolstered by a multifunctional USB-C port for direct streaming and charging. Main pros include its exceptional brightness for well-lit rooms, superior gaming performance, and a long lamp life of up to 20,000 hours in SuperEco+ mode. However, notable cons include the lack of HDMI 2.1 support for 4K/120Hz console gaming, limited black levels typical of high-brightness lamp projectors, and a basic internal 10W speaker that may necessitate an external sound system for immersive audio.

Technical Specifications of ViewSonic PX748 4K

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%

8.4

Image Quality

22.0%

5.8

Projection & Lens

12.0%

6.0

HDMI & Gaming

10.0%

3.9

Audio & Features

8.0%

5.4

Connectivity

6.0%

4.4

Design & Power

6.6
ViewSonic PX748 4K has a technical score of 6.58 points, which is higher than 72.4% 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%

8.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.2
(299)

(Reviews last updated: June 2026)

8.9
ViewSonic PX748 4K has a user score of 8.88 points, which is higher than 88.4% 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.
10
ViewSonic PX748 4K has a popularity of 10 points, which is higher than 83.9% 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%

6.8

Overall score

40.0%

6.1

Price

6.6
ViewSonic PX748 4K has a quality-to-price ratio of 6.6 points, which is higher than 71.6% 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

4,000
ViewSonic PX748 4K reaches 4000 ANSI lumens, brighter than 85.9% of projectors and equal to 5.2% 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

12,000:1
ViewSonic PX748 4K has a contrast ratio of 12000:1, higher than 50.9% of projectors and equal to 2.3% 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

1920x1080
ViewSonic PX748 4K uses a native resolution of 1920x1080, higher than 26.2% of projectors and equal to 60.1% of projectors.
Uses XPR pixel-shifting for 4K output.
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

3840x2160
ViewSonic PX748 4K supports output resolution up to 3840x2160, higher than 69.1% of projectors and equal to 26.1% 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

1.13-1.47:1
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

0.75 m
ViewSonic PX748 4K needs a minimum throw distance of 0.75 m, shorter than 77.6% 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

300 inch
ViewSonic PX748 4K supports projection sizes up to 300 inch, larger than 51.8% of projectors and equal to 38% 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

1.3
ViewSonic PX748 4K offers a zoom ratio of 1.3, wider than 39.5% of projectors and equal to 13.7% of projectors.
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

no
ViewSonic PX748 4K does not have motorized zoom. 16.3% 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

4.2 ms
ViewSonic PX748 4K has input lag of 4.2 ms, lower than 93.2% of projectors and equal to 4.4% of projectors.
At 1080P/240Hz.
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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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

2.0
ViewSonic PX748 4K supports HDMI 2.0, more modern than 45.5% of projectors and equal to 36.7% 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

18 Gbps
ViewSonic PX748 4K supports HDMI bandwidth up to 18 Gbps, higher than 48.1% of projectors and equal to 40% 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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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
ViewSonic PX748 4K uses lamp light source technology, less advanced than 67.1% of projectors and equal to 33% of projectors.
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
ViewSonic PX748 4K 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
ViewSonic PX748 4K 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

20,000 hours
ViewSonic PX748 4K offers eco-mode lamp life of 20000 hours, shorter than 32.8% of projectors and equal to 19.5% of projectors.
Eco mode rating.
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

310 W
ViewSonic PX748 4K uses 310 W of power, more than 71.9% of projectors and equal to 1.3% of projectors.
Show more

ViewSonic PX748 4K vs the average projector

  • 81.8% brighter image
    ViewSonic PX748 4K has higher ANSI lumens than the average projector (4,000 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

    ViewSonic PX748 4K has higher ANSI lumens than the average projector (4,000 vs 2,200). The average projector has 2,200 ANSI lumens.4,000 vs 2,200
  • Higher output resolution
    ViewSonic PX748 4K supports a higher output resolution than the average projector (3840x2160 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

    ViewSonic PX748 4K supports a higher output resolution than the average projector (3840x2160 vs 1920x1080). The average projector outputs at 1920x1080 resolution.3840x2160 vs 1920x1080
  • 2.82x higher refresh rate
    ViewSonic PX748 4K has a higher refresh rate than the average projector (240 Hz vs 85 Hz). The average projector has 85 Hz of refresh rate.
    What it is: Number of screen refreshes per second, measured in hertz.
    When it matters: When motion clarity matters for gaming, sports, or fast-moving video instead of slower cinematic content only.

    Importance: MEDIUM

    ViewSonic PX748 4K has a higher refresh rate than the average projector (240 Hz vs 85 Hz). The average projector has 85 Hz of refresh rate.240 Hz vs 85 Hz
  • Supports pixel shifting
    ViewSonic PX748 4K supports pixel shifting, while the average projector does not. 28.4% of projectors support pixel shifting.
    What it is: Uses pixel shifting to increase perceived image resolution.
    When it matters: When you want more perceived detail than the native panel alone would provide, especially on bigger screens.

    Importance: LOW

    ViewSonic PX748 4K supports pixel shifting, while the average projector does not. 28.4% of projectors support pixel shifting.
  • Supports HDMI ARC
    ViewSonic PX748 4K supports HDMI ARC, while the average projector does not. 36.1% of projectors support HDMI ARC.
    What it is: Support for HDMI ARC to send audio to external devices.
    When it matters: When you use a soundbar, receiver, or speakers, audio output options matter.

    Importance: LOW

    ViewSonic PX748 4K supports HDMI ARC, while the average projector does not. 36.1% of projectors support HDMI ARC.
  • 22.8 ms lower input lag
    ViewSonic PX748 4K has a lower input lag than the average projector (4.2 ms vs 27 ms). The average projector has 27 ms of input lag.
    At 1080P/240Hz.
    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

    ViewSonic PX748 4K has a lower input lag than the average projector (4.2 ms vs 27 ms). The average projector has 27 ms of input lag.4.2 ms vs 27 ms
  • 10 degrees greater vertical keystone correction
    ViewSonic PX748 4K offers more vertical keystone correction than the average projector (40 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of vertical keystone correction.
    What it is: Range of vertical keystone correction supported.
    When it matters: When the projector sits too high or too low relative to the screen and vertical image correction becomes necessary.

    Importance: MEDIUM

    ViewSonic PX748 4K offers more vertical keystone correction than the average projector (40 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of vertical keystone correction.40 degrees vs 30 degrees
  • 10 degrees greater horizontal keystone correction
    ViewSonic PX748 4K offers more horizontal keystone correction than the average projector (40 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of horizontal keystone correction.
    What it is: Range of horizontal keystone correction supported.
    When it matters: When the projector cannot line up perfectly with the screen and you need side-to-side image correction.

    Importance: LOW

    ViewSonic PX748 4K offers more horizontal keystone correction than the average projector (40 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of horizontal keystone correction.40 degrees vs 30 degrees
  • 81.8% brighter image
    ViewSonic PX748 4K has higher ANSI lumens than the average projector (4,000 vs 2,200). The average projector has 2,200 ANSI lumens.
  • Higher output resolution
    ViewSonic PX748 4K supports a higher output resolution than the average projector (3840x2160 vs 1920x1080). The average projector outputs at 1920x1080 resolution.
  • 2.82x higher refresh rate
    ViewSonic PX748 4K has a higher refresh rate than the average projector (240 Hz vs 85 Hz). The average projector has 85 Hz of refresh rate.
  • Supports pixel shifting
    ViewSonic PX748 4K supports pixel shifting, while the average projector does not. 28.4% of projectors support pixel shifting.
  • Supports HLG
    ViewSonic PX748 4K supports HLG, while the average projector does not. 42.7% of projectors support HLG.
  • 10 degrees greater vertical keystone correction
    ViewSonic PX748 4K offers more vertical keystone correction than the average projector (40 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of vertical keystone correction.
  • 10 degrees greater horizontal keystone correction
    ViewSonic PX748 4K offers more horizontal keystone correction than the average projector (40 degrees degrees vs 30 degrees degrees). The average projector offers 30 degrees degrees of horizontal keystone correction.
  • 0.31 m shorter throw distance
    ViewSonic PX748 4K has a lower throw distance than the average projector (0.8 m vs 1.06 m). The average projector has 1.06 m of throw distance.
  • 50 inch larger image size
    ViewSonic PX748 4K has a higher projection size than the average projector (300 inch vs 250 inch). The average projector has 250 inch of projection size.
  • 22.8 ms lower input lag
    ViewSonic PX748 4K has a lower input lag than the average projector (4.2 ms vs 27 ms). The average projector has 27 ms of input lag.
  • Supports HDMI ARC
    ViewSonic PX748 4K supports HDMI ARC, while the average projector does not. 36.1% of projectors support HDMI ARC.
  • 1 more RJ45 ports
    ViewSonic PX748 4K has more RJ45 ports than the average projector (1 vs 0). The average projector has 0 RJ45 ports.
  • 1 more USB ports
    ViewSonic PX748 4K has more USB ports than the average projector (2 vs 1). The average projector has 1 USB ports.
  • Includes memory card slot
    ViewSonic PX748 4K includes an external memory slot, while the average projector does not. 34.9% of projectors include an external memory slot.

Total
Overall
Image Quality
Projection & Lens
HDMI & Gaming
Connectivity
  • 10 % less horizontal lens shift
    ViewSonic PX748 4K has fewer horizontal lens shift than the average projector (20 % vs 30 %). The average projector has 30 % horizontal lens shift.
  • 40 % less vertical lens shift
    ViewSonic PX748 4K has fewer vertical lens shift than the average projector (20 % vs 60 %). The average projector has 60 % vertical lens shift.
  • Limited HDMI format
    ViewSonic PX748 4K supports a less capable max HDMI input format than the average projector (4K/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
    supports 1080p/240Hz input for gaming.
  • No Wi-Fi support
    ViewSonic PX748 4K does not support Wi-Fi, while the average projector does. 52.6% of projectors support Wi-Fi.
  • Basic light source
    ViewSonic PX748 4K has Basic light source than the average projector (lamp vs laser). The average projector uses a laser light source.
  • 16,000 hours shorter lamp life
    ViewSonic PX748 4K 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.
  • 3 dB louder operation
    ViewSonic PX748 4K has a higher audible noise than the average projector (33 dB vs 30 dB). The average projector has 30 dB of audible noise.
  • 76.1 W higher power use
    ViewSonic PX748 4K uses more power than the average projector (310 W vs 233.9 W). The average projector uses 233.9 W of power.
  • Basic light source
    ViewSonic PX748 4K has Basic light source than the average projector (lamp vs laser). The average projector uses a laser light source.
    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

    ViewSonic PX748 4K has Basic light source than the average projector (lamp vs laser). The average projector uses a laser light source.lamp vs laser
  • No Wi-Fi support
    ViewSonic PX748 4K 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

    ViewSonic PX748 4K does not support Wi-Fi, while the average projector does. 52.6% of projectors support Wi-Fi.
  • 10 % less horizontal lens shift
    ViewSonic PX748 4K has fewer horizontal lens shift than the average projector (20 % vs 30 %). The average projector has 30 % horizontal lens shift.
    What it is: Horizontal lens shift adjustment range for image positioning.
    When it matters: When you want cleaner off-center placement without relying as heavily on digital keystone correction.

    Importance: MEDIUM

    ViewSonic PX748 4K has fewer horizontal lens shift than the average projector (20 % vs 30 %). The average projector has 30 % horizontal lens shift.20 % vs 30 %
  • Limited HDMI format
    ViewSonic PX748 4K supports a less capable max HDMI input format than the average projector (4K/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.
    supports 1080p/240Hz input for gaming.
    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

    ViewSonic PX748 4K supports a less capable max HDMI input format than the average projector (4K/60Hz vs 4K/120Hz). The average projector supports a max HDMI input format of 4K/120Hz.4K/60Hz vs 4K/120Hz
  • 40 % less vertical lens shift
    ViewSonic PX748 4K has fewer vertical lens shift than the average projector (20 % vs 60 %). The average projector has 60 % vertical lens shift.
    What it is: Vertical lens shift adjustment range for image positioning.
    When it matters: When you want installation flexibility without depending only on digital keystone correction.

    Importance: MEDIUM

    ViewSonic PX748 4K has fewer vertical lens shift than the average projector (20 % vs 60 %). The average projector has 60 % vertical lens shift.20 % vs 60 %
  • 16,000 hours shorter lamp life
    ViewSonic PX748 4K 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.
    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

    ViewSonic PX748 4K 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.4000 hours vs 20000 hours
  • 3 dB louder operation
    ViewSonic PX748 4K has a higher audible noise than the average projector (33 dB vs 30 dB). The average projector has 30 dB of audible noise.
    What it is: Sound level produced during operation, measured in decibels.
    When it matters: When you watch in a quiet room close to the projector, lower noise matters.

    Importance: LOW

    ViewSonic PX748 4K has a higher audible noise than the average projector (33 dB vs 30 dB). The average projector has 30 dB of audible noise.33 dB vs 30 dB
  • 76.1 W higher power use
    ViewSonic PX748 4K uses more power than the average projector (310 W vs 233.9 W). The average projector uses 233.9 W of power.
    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

    ViewSonic PX748 4K uses more power than the average projector (310 W vs 233.9 W). The average projector uses 233.9 W of power.310 W vs 233.9 W
Total
Projection & Lens
HDMI & Gaming
Connectivity
Design & Power

Graphic comparison of ViewSonic PX748 4K and

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Third-party reviews

United Kingdom
amazon
4.2
299 Reviews

(Reviews last updated: June 2026)

What customers like about ViewSonic PX748 4K?

  • Exceptional brightness (4,000 ANSI Lumens) that performs well even in lit rooms
  • Ultra-fast input response with 4.2ms lag and up to 240Hz refresh rate, ideal for gaming
  • Sharp 4K UHD picture quality with vibrant color reproduction
  • Versatile connectivity options including a USB Type-C port for direct streaming and charging
  • Flexible installation tools like 1.3x optical zoom and 4-corner keystone correction
  • Long lamp life of up to 20,000 hours in SuperEco+ mode
  • Relatively quiet operation, specifically in eco or silent modes

What customers dislike about ViewSonic PX748 4K?

  • Onboard speakers are generally weak and lack depth for a full cinema experience
  • Lacks built-in smart TV software or an operating system for direct app streaming
  • HDR performance and black levels are decent but not exceptional compared to high-end models
  • Absence of HDMI 2.1 ports limits 4K gaming to 60Hz on the latest consoles
  • Setup and keystone adjustments can be cumbersome or tricky for some users
  • Occasional 'rainbow effect' reported due to the DLP technology
  • Lacks vertical or horizontal lens shift, requiring precise physical placement

Expert reviews

I
indianexpress.com
14/10/2021
ViewSonic PX748-4K projector review: One for the specialists

The Indian Express review of the ViewSonic PX748-4K highlights it as a powerful 4,000 ANSI Lumens projector ideal for gaming and home cinema, offering an ultra-low 4.2ms input lag and 240Hz refresh rate. Key advantages include its exceptional brightness, capable of delivering clear images in daylight, alongside versatile customisation options and multiple input methods....Read more

M
mansworldindia.com
17/09/2021
ViewSonic PX748-4K Home Projector – Review

The ViewSonic PX748-4K is a compact and highly capable home projector that weighs under 3kg and measures 31cm by 22cm, making it easy to fit into tight living spaces. It features a relatively short throw ratio capable of projecting a massive 100-inch screen from just 2.5 metres away. The setup is straightforward, bolstered by highly practical connectivity features like dual HDMI...Read more

A
audioguru.com
16/11/2022
Viewsonic PX748-4K Review - 4K UHD Projector

The ViewSonic PX748-4K is a compact, high-end 4K UHD home projector praised by AudioGuru for delivering excellent value, vibrant visuals, and outstanding performance across various lighting environments. Standout pros of this device include its incredibly bright 4,000 ANSI lumens lamp, which easily competes with indoor ambient light without sacrificing image clarity, and its true 4K...Read more

P
prad.de
12/11/2021
ViewSonic PX748-4K Review: Affordable 4K Home Cinema Projector

The ViewSonic PX748-4K is a compact and budget-friendly 4K HDR home cinema projector powered by a traditional UHP lamp that achieves an impressive brightness of 4,000 ANSI lumens. It strongly targets the gaming sector by boasting a remarkably low input lag of 5 ms alongside a smooth 240 Hz refresh rate. Its lightweight 2.6 kg build makes it easily portable for temporary living room...Read more

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P
prad.de
27/08/2023
ViewSonic PX748-4K: Review of the home cinema projector (Video)", "ViewSonic launches projector for home cinema

The ViewSonic PX748-4K is a lamp-based home cinema and gaming projector that balances strong performance with high affordability. In their video review, Diesel Legiance highlights its exceptional value, noting its capability to deliver sharp, fluid visuals by utilizing XPR upscaling technology to achieve 4K resolution (3840 x 2160 pixels) from a native Full HD chip. A standout...Read more

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M
mondoprojos.fr
23/08/2021
ViewSonic PX728-4K Review (including a detailed comparison with the PX748-4K)

The ViewSonic PX728-4K is a lamp-based DLP home cinema projector that utilizes Texas Instruments' 0.47-inch DMD chip and XPR pixel-shifting technology to simulate a 4K UHD image from a native 1080p resolution. In terms of performance pros, the reviewer highlights its out-of-the-box color accuracy (covering 99.3% of the Rec.709 color gamut), strong light output capability, and...Read more

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