We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular white projector with front lens and top control panel

BenQ

BenQ X3100i 4K UHD 4LED home theater projector 3300 ANSI lumens 4.2ms 1080p 240Hz

SKU CH-Q1GZ-HX9NA MPN X3100i

A 4K UHD DLP projector with 4LED light source delivering 3300 ANSI lumens, 600,000:1 contrast, 4.2 ms input lag at 1080p 240 Hz, vertical lens shift, Android TV and 7.1-channel audio with eARC

  • TypeDLP
  • Sports TeamNO
  • PanelDLP
  • LampLight Source 4LED Light Source Life a. Normal 20000 hrs, b.
  • Aspect Ratio16:9
  • Native Resolution4K UHD (3840×2160)
  • True 4K UHD resolution shows every detail at 3840×2160
  • Ultra-low 4.2 ms input lag at 1080p 240Hz for responsive gaming
  • 3300 ANSI lumens from 4LED light source keeps images vivid in lit rooms
  • Android TV built in with AirPlay and Chromecast for direct streaming
  • TreVolo audio with 7.1-channel and Dolby Atmos via eARC for immersive sound

True 4K UHD 4LED gaming projector

The BenQ X3100i is a DLP home-theater projector with a native 3840×2160 resolution and a 4LED light source rated for 20000 hours in normal mode or 30000 hours in ECO and SmartECO modes. It delivers 3300 ANSI lumens and a 600000:1 contrast ratio with light-source dimming. The unit includes Google-certified Android TV, 10W TreVolo speakers with 7.1-channel and Dolby Atmos support, and vertical lens shift.

HDMI 2.0b connectivity and refresh limits

Two HDMI 2.0b inputs with HDCP 2.2 handle video up to 1080p at 240Hz, 1080p at 120Hz, 2K at 120Hz, and 4K at 60Hz. Input lag measures 4.2ms at 1080p 240Hz, 8.3ms at 1080p or 2K 120Hz, and 16.7ms at 4K 60Hz. The throw ratio spans 1.15 to 1.50 with a 1.3x zoom, and keystone correction covers ±30 degrees both vertically and horizontally.

Room placement and audio return checks

Verify that your throw distance matches the 1.15–1.50 ratio and that vertical lens shift provides the needed image offset. Confirm your source devices output over HDMI 2.0b for the stated refresh rates and that your audio system can use eARC, S/PDIF, or the 3.5mm jack for 7.1-channel or Dolby Atmos playback.

Highlights

  • True 4K UHD resolution shows every detail at 3840×2160
  • Ultra-low 4.2 ms input lag at 1080p 240Hz for responsive gaming
  • 3300 ANSI lumens from 4LED light source keeps images vivid in lit rooms
  • Android TV built in with AirPlay and Chromecast for direct streaming
  • TreVolo audio with 7.1-channel and Dolby Atmos via eARC for immersive sound

Specifications

BrandBenQ
ModelX3100i
Part NumberX3100i
TypeDLP
Sports TeamNO
PanelDLP
LampLight Source
4LED
Light Source Life
a. Normal 20000 hrs, b. ECO 30000 hrs, SmartEco 30000 hrs
Aspect Ratio16:9
Native Resolution4K UHD (3840×2160)
Brightness3300
Contrast Ratio(w/ Lightsource Dimming), 600,000:1
Horizontal Refresh Rate15K~135KHz
Vertical Refresh Rate23~240Hz
LensF/# = 1.8 - 2.25 mm, f = 17.02 - 22.21 mm
Keystone Correction2D, (Auto) Vertical ± 30 degrees; Horizontal ± 30 degrees
Throw Ratio1.15 ~ 1.50
Input Video CompatibilityAnalog RGB, Digital
Input Video Connectors(x2), HDMI-1 (2.0b/HDCP2.2), HDMI-2 (2.0b/HDCP2.2)
Output Audio Connectors3.5mm Mini Jack
Output Video ConnectorsS/PDIF, Audio out (3.5mm Mini Jack), HDMI Audio Return
Network ConnectorsNo
USB(x1), USB Type A(2.0/Reader/FW Upgrade)
CompatibilityInput Lag
16.7 ms (1080P 60Hz), 16.7 ms (4K 60Hz), 16.7ms (2K 60Hz), 4.2 ms (1080P 240Hz), 8.3 ms (1080P 120Hz), 8.3ms (2K 120Hz)
Resolution Support
VGA (640 x 480) to 4K UHD (3840 x 2160)
Horizontal Frequency
15K~135KHz
Vertical Scan Rate
23~240Hz
Built-in Speakers(x2), 5W Chamber
FeaturesHDMI in
(x3), HDMI-1 (2.0b/HDCP2.2), HDMI-2 (2.0b/HDCP2.2), HDMI-Internal (2.0b/HDCP2.2)
USB Type A
(x1), USB Type A: USB Type A-1 (2.0/Reader/FW Upgrade)
RS232 in (DB-9pin)
(x1)
DC 12V Trigger (3.5mm Jack)
(x1)
Smart System
Built-in OS
Yes, Android 11.0
Bluetooth
Yes, Bluetooth 5.0
Wi-Fi Standard
802.11 a/b/g/n/ac (2.4G/5G)
Wireless Projection
AirPlay, Google Cast
Preload Apps
Netflix
Power Supply100 - 240 VAC, 50/60Hz
Power ConsumptionTypical Power Consumption (110V)
330W
Stand-by Power Consumption
<0.5W
Temperature RangeOperating Temperature: 0~40°C
Dimensions272 x 213 x 259mm
Weight6.8 kg
Package ContentsAndroid TV dongle
(Standard), QS02
Remote Control w/ Battery
RCI074
Power Cord (by region)
x1 (1.8M)
Quick Start Guide
(x1) 21L
Warranty Card (by region)
Yes
Universal Ceiling Mount
(Optional), CM00G3
Shipping weight8.62 kg
Package size400 × 390 × 340 mm

Questions about this item

Which brightness level and lens-shift range suit a living-room setup?

The projector delivers 3300 ANSI lumens with a 40%-60% vertical lens shift and a 1.3x zoom, so you can place it flexibly even with some ambient light.

What does the 4.2 ms figure mean when I connect a console?

At 1080p 240 Hz the input lag drops to 4.2 ms, while 4K 60 Hz runs at 16.7 ms and 1080p 120 Hz at 8.3 ms.

How do the two HDMI 2.0b ports limit resolution and refresh rate?

Each HDMI 2.0b port supports 4K at 60 Hz and 1080p at up to 240 Hz, with HDCP 2.2 for protected content.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.