
ViewSonic LS901-4K
Score: 89/100
BenQ W4100i
Score: 83/100Rankings

The ViewSonic LS901-4K is a professional-grade laser projector delivering 5,500 lumens and a 3,000,000:1 contrast ratio for large-venue installations. Its laser source and extensive adjustment options add flexibility but bring higher power consumption and cost. Best for corporate, education or home-theater users needing bright, high-contrast images and advanced installation features.

The BenQ W4100i is a 4K HDR home-theater projector with a bright LED engine, full DCI-P3 coverage and extensive lens-shift flexibility, ideal for bright-room cinema and gaming. Its pixel-shifted panel and manual focus limit true 4K sharpness and convenience. Best for users who value color accuracy, Android TV integration and flexible mounting over native-4K resolution.
| Attribute | ![]() | ![]() |
|---|---|---|
5,500 lumensbest | 3,200 lumens | |
3,000,000best | 3,000,000best | |
30,000 hoursbest | 30,000 hoursbest | |
1.7best | 1.3 | |
15 wattsbest | — | |
1 | 3best | |
| ↓ lower better | 4.85 kgbest | 6.11 kg |
| ↓ lower better | 245 wattsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Display(1) | ||
Brightness (lumens) | 5500 lumens | 3200 lumens |
Projection Geometry(1) | ||
Throw Ratio | 1.2-2.04 | 1.15-1.5 |
Lighting(1) | ||
Light Source | laser | LED |
Features(1) | ||
Zoom Ratio | 1.7 | 1.3 |
Connectivity(1) | ||
HDMI Ports | 1 | 3 |
Build & Design(1) | ||
Weight (kg) | 4.85 kg | 6.11 kg |


Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the W4100i for its high brightness, true 4K pixel-shifting, factory-calibrated color accuracy and AI-driven picture enhancements, noting it delivers cinema-grade visuals even in moderately lit rooms. They also highlight its low gaming latency, extensive HDMI 2.1 support and flexible lens shift, while pointing out the lack of motorized zoom/focus and the limitation of one HDMI port for full-resolution high-frame-rate content.
Everyday users consistently commend the projector's vivid colors, strong HDR performance and smooth gaming response, appreciating the easy wireless streaming via Chromecast and the flexible installation options. Recurring complaints focus on the need for manual focus/zoom, occasional rainbow artifacts, and the restriction of one HDMI port for full-resolution high-frame-rate content.

