Gaming~$2,799

BenQ

BenQ X3100i

Name: BenQ X3100i
Brand: BenQ
Price: 2799 USD
Availability: InStock

The gaming version of BenQ's 4LED platform: 4.2 ms at 1080p/240, 8.3 ms at 1080p/120, and three game modes tuned per genre. It keeps the 3,300 ANSI lumen LED engine and adds a 2.1 speaker system, so a console can be plugged straight in with nothing else in the room.

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Approx. price

~$2,799

snapshot, not a live price

Brightness

3,300

ANSI

Screen at 10 ft

92–120 in

16:9 diagonal, estimated from the throw ratio

Input lag

8 ms

fastest published mode

Light source

LED

20,000 h rated

Best for: A console gaming room that also has to work as a movie room

Specifications

Type: Gaming
Imaging tech: DLP
Native resolution: 4K pixel-shift
Max signal: 1080p240
Max refresh: 240 Hz
Light source: LED
Light source life: 20,000 hours
Throw ratio: 1.15–1.5:1
Zoom: 1.3x
Vertical lens shift: ±10%
Dynamic contrast: 600,000:1
Input lag (4K/60): 17 ms
Input lag (1080p/120): 8 ms
HDR formats: HDR10, HLG
3D: Full HD 3D
Built-in streaming: Android TV
Speakers: 10 W total
HDMI: 2 × HDMI 2.0
Fan noise: 32 dB
Weight: 15 lb
Released: 2023

Features

4.2 ms at 1080p/240
Three genre game modes
3,300 ANSI 4LED engine
Android TV dongle included
2x5 W with bass driver
Full HD 3D

What it does well

4.2 ms at 1080p/240 and 8.3 ms at 1080p/120 are among the lowest lag figures in this catalog
3,300 ANSI lumens is the brightest LED figure here, and it holds up with the lights on
The LED source reaches full brightness instantly, so there is no warm-up between rounds
Android TV ships in the box and the audio system is genuinely usable for casual play
A 1.3x zoom with ±10% shift gives some placement latitude

What it gives up

HDMI 2.0 caps 4K at 60 Hz; the headline 240 Hz is 1080p only
±10% vertical shift is much less than the HT4550i it shares a chassis with
15 lb makes it awkward to move between a shelf and a mount
No Dolby Vision or HDR10+, only static HDR10
Contrast is the weak point: it is a bright projector that is not optimised for black level, and 3LCD rivals at the price look better on dark material

The two lists above are read off manufacturer specifications and published measurements, not from owner reports. Where owner discussion has been collected it appears separately below, so the two are never mistaken for each other.

Throw calculator

Worked from this projector’s published throw ratio of 1.15–1.5:1. Estimates: a real install loses a little to lens offset, and zoom ranges are quoted at the extremes of the lens.

Lens to screen

feet

16:9 diagonal

92–120 in

Throw at a glance

Screen at 8 ft: 73–96 in
Screen at 10 ft: 92–120 in
Screen at 14 ft: 128–168 in
100-inch screen at: 8 ft 4 in–10 ft 11 in
120-inch screen at: 10 ft–13 ft 1 in

16:9 diagonals, estimated from the published throw ratio: image width = distance ÷ throw ratio, diagonal = width ÷ 0.8716. The maths.

Compare the BenQ X3100i

Where these specs come from

https://www.projectorcentral.com/BenQ-X3100i.htm

The brightness figure is measured to a nine-point screen standard and is comparable with the rest of the catalog.

What owners say

Owner discussion treats this as the gaming projector in BenQ's LED line, and the input lag is the whole argument. Owners playing on a console describe it as designed around response time rather than having a fast mode added, and the same owners report the LED engine largely sidesteps the rainbow artifact that phosphor-wheel projectors produce.

The complaint that recurs is placement. Owners who have tried to ceiling-mount this family describe the exercise as frustrating: there is only a small amount of lens shift and a narrow zoom, so the projector has to go almost exactly where the geometry says. Several owners moving from older projectors are surprised by how little lens offset modern DLP models have and end up buying a longer drop for the mount.

On picture, owners are consistent: bright, sharp, good for a 110 to 130-inch screen in a dark room, and behind the 3LCD competition on contrast. Owners who tune it report noticeably better black level by reducing the light output and using dynamic mode rather than running it at full brightness.

What owners like

Input lag is the reason owners buy it, and they describe it as part of the core design rather than a mode bolted on — it comes up in almost every recommendation for console gaming
The LED light engine draws specific praise for avoiding the rainbow artifact: owners who see colour flashes on phosphor-wheel projectors report far fewer problems with LED models
Owners report it is bright enough for a 110 to 130-inch screen in a darkened room with no difficulty
Long-term owners like that the LED source means no lamp replacement and no colour drift over the projector's life
Owners who tune it report that dropping the light output and using dynamic mode gets meaningfully better contrast out of it than the default settings do

Common complaints

Lens shift is the repeated complaint — owners describe it as a token amount and warn that ceiling mounting is frustrating compared with projectors that have a real shift range
Contrast is where owners place it behind the 3LCD competition at a similar price; several say it is simply not optimised for black level
Owners moving from older projectors are warned that modern single-chip DLP models have only a few inches of lens offset, so an existing mount often has to be lowered
Owners point out the zoom range is narrow, so placement latitude is limited in both axes

Questions owners ask about the BenQ X3100i

Can I ceiling-mount it?

You can, but owners describe it as fiddly. There is only around ±10% vertical lens shift and a 1.3x zoom, so the projector has to sit close to where the geometry puts it. Owners recommend a mount with real height adjustment, and several who wanted a straightforward ceiling install chose BenQ's HT4550i instead specifically for its larger shift range.

Does the LED engine really help with the rainbow effect?

Owners who are sensitive to it report far fewer problems on LED projectors than on models with a phosphor colour wheel, because the LED strobe switches much faster than a wheel can spin. It is a reduction rather than an elimination — the sequential-colour mechanism is still there.

How does it compare on contrast to a 3LCD projector at the same price?

Owners put it behind. The recurring assessment is that it is a bright projector not optimised for black level, and that in a dark room a 3LCD model with a dynamic iris looks better on dark material. In a lighter room with pale walls, owners say the difference matters much less.

How big a screen will it handle?

Owners report 110 to 130 inches in a darkened room without trouble. It is bright enough that several use it in rooms with modest ambient light, though they recommend controlling the lighting near the screen first.

Is it worth the step up from the model it replaced?

Owners who tracked both note the newer model came with a price increase, and that the older one stayed on sale as the budget alternative in several markets. If the price gap is significant where you are, owners generally say the older model is still a strong buy and the upgrade is incremental.