BenQ X3100i
#1 in 4KFull review
A bright LED 4K gaming projector with streaming in the box, for gamers who want low lag and no lamp to replace.
Amazon $1,799$1,799
The BenQ X3100i is the better projector overall, rated 4.7 to 4.6. The BenQ X3100i leads on warranty. The XGIMI Horizon 20 wins on setup. The XGIMI Horizon 20 costs $240 less ($1,559 vs $1,799).
XGIMI Horizon 20
#6 in 4KFull review
A flexible smart 4K laser projector for living rooms and game rooms, with real lens shift and zoom that most lifestyle projectors lack.
Amazon $1,559$1,559
Prices were last checked October 29, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the BenQ X3100i for warranty (3-year warranty vs 2-year warranty).
- Choose the XGIMI Horizon 20 for setup (Autofocus, auto keystone, 1.2x zoom, lens shift vs Auto keystone, 1.3x zoom, lens shift).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4K projector; a clear win is highlighted. How we rank explains each one.
| Factor weight | BenQ X3100i | XGIMI Horizon 20 |
|---|---|---|
| Overall rating | 4.7/5 | 4.6/5 |
| Brightness 25% | 91 3,300 ANSI lumens | 89 3,200 ISO lumens |
| Value 15% | 86 $0.55 per lumen | 89 $0.49 per lumen |
| Resolution 10% | 100 4K (pixel shift) | 100 4K (pixel shift) |
| Streaming 15% | 100 Android TV with licensed Netflix | 100 Google TV with licensed Netflix |
| Setup 10% | 70 Auto keystone, 1.3x zoom, lens shift | 100 Autofocus, auto keystone, 1.2x zoom, lens shift |
| Light life 10% | 100 30,000 hour LED | 50 light source life not published (neutral score used) |
| Gaming 10% | 100 4.2 ms input lag | 100 1 ms input lag |
| Warranty 5% | 100 3-year warranty | 50 2-year warranty |
Independent measurements
BenQ X3100i
| Tested by | Brightness | Input lag | Contrast | Conditions |
|---|---|---|---|---|
| ProjectorCentral | 2,949 lm | 5 ms | - | 2,949 ANSI lumens in Bright mode with video-level white (3,361 with full-white signal); 1,199 in calibrated User mode, Eco. Lag 5 ms at 1080p/240, 9 ms at 1080p/120, 17 ms at 4K/60 in FPS mode. |
XGIMI Horizon 20
No independent test published yet.
Specifications
| BenQ X3100i | XGIMI Horizon 20 | |
|---|---|---|
| Picture | ||
| Brightness | 3,300 ANSI | 3,200 ISO |
| Native resolution | 1920 x 1080 (1080p) | 1920 x 1080 (1080p) |
| Picture resolution | 4K (pixel shift from 1920x1080) | 4K (pixel shift from 1920x1080) |
| Display | DLP | DLP |
| Light source | LED | RGB laser |
| Light source life | 30,000 hours | - |
| HDR | HDR10 | Dolby Vision, HDR10+ |
| Color gamut | 100% DCI-P3 | 110% BT.2020 |
| Dynamic contrast | 600,000:1 | 20,000:1 |
| Placement | ||
| Throw | Standard throw (1.1:1) | Standard throw (1.2:1) |
| Largest image | 300 in | 300 in |
| Autofocus | No | Yes |
| Auto keystone | Yes | Yes |
| Obstacle avoidance | No | Yes |
| Auto screen fit | No | Yes |
| Optical zoom | 1.3x | 1.2x |
| Lens shift | Vertical | Horizontal and vertical |
| Streaming and gaming | ||
| Built-in apps | Android TV, licensed Netflix | Google TV, licensed Netflix |
| Input lag | 4.2 ms | 1 ms |
| Top refresh rate | 240 Hz | 240 Hz |
| HDMI ports | 2 | 2 |
| eARC | Yes | Yes |
| Speakers | 10 W | 24 W |
| Build | ||
| Battery | None | None |
| Fan noise | 32 dB | 28 dB |
| Power | 330 W | 180 W |
| Dimensions | 10.7 x 8.4 x 10.2 in (W x D x H) | 11.7 x 7.5 x 9.8 in (W x D x H) |
| Weight | 15 lb | 10.6 lb |
| Warranty | 3 years | 2 years |
| Released | 2023-10 | 2025-10-15 |