Our Verdict
BenQ TH671ST Wins

Offers low input lag for gaming, ideal for quick responses. Choose ViewSonic LS741HD for 5000 lumens brightness and a long-life laser light source in a non-gaming setup.
Bottom Line: BenQ TH671ST is the better choice. Offers low input lag for gaming, ideal for quick responses.
Key Differences
The most significant spec differences at a glance
Brightness Ansi Lumens
40% lessThrow Ratio
51% lessAdvantages
Where each product wins
ViewSonic
- Brightness Ansi Lumens: 40% higher (3000 vs 5000)
- Throw Ratio: 51% higher (0.6883 vs 1.4)
Who Should Buy Which?
Find the right product for your needs
Buy BenQ if...
BenQ TH671ST | 1080p
If you're a serious gamer who demands highly responsive action without breaking the bank, the BenQ TH671ST is your top choice. Its dedicated Gaming Mode ensures low input lag, crucial for competitive play. With a short-throw ratio (0.6883), it projects a large 100-inch image from just 5 feet away, making it perfect for smaller gaming rooms or setups where space is limited. The 1080p resolution and 3000 lumens provide clear, bright visuals for an immersive experience, all for under $1000, prioritizing performance over ultimate brightness.
Buy ViewSonic if...
ViewSonic LS741HD 5000 Lumens
The ViewSonic LS741HD is ideal for professional or commercial environments where high brightness and long-term reliability are paramount. If you need a projector for conference rooms, classrooms, or public displays, its 5000 lumens and durable laser light source ensure vivid, consistent images even in well-lit conditions, with minimal maintenance. Features like 1.6x optical zoom, full H+V keystone, 360-degree projection, and LAN control offer extensive installation flexibility and system integration capabilities, justifying its higher price for demanding users prioritizing robust performance.
Spec Comparison
5 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $949 | $1350 |
| Rating | 4.4(843) | 4.4(32) |
| Brightness Ansi Lumens | 3000 | 5000 |
| Native Resolution | 1080p | 1080p |
| Throw Ratio | 0.69 | 1.4 |
| Keystone Correction | Vertical | Full (H+V) |
| Light Source | — | Laser |
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Pros & Cons
Quick overview of strengths and weaknesses
BenQ TH671ST |
- Native 1080p resolution for clear images.
- 3000 lumens provides bright picture.
- Low input lag for responsive gaming.
- Projects 100-inch image from 5 feet.
- Lacks horizontal keystone adjustment.
- Integrated speaker typically offers low fidelity.
ViewSonic LS741HD 5000
- 5000 lumens ensures bright, clear image projection.
- Laser light source provides long life, consistent output.
- 1080p native resolution delivers sharp visual detail.
- 1.6x optical zoom aids flexible projector placement.
- Native 1080p resolution; lacks 4K display capability.
- Standard throw ratio demands specific room distance.
- No explicit mention of HDR compatibility.
Frequently Asked Questions
Common questions about this comparison
Which projector is better for gaming?
The BenQ TH671ST is superior for gaming due to its dedicated Gaming Mode, ensuring intense low input lag for responsive action. The ViewSonic doesn't specify gaming input lag, making BenQ the clear choice for gamers.
What's the main difference in brightness?
The ViewSonic LS741HD offers significantly higher brightness at 5000 ANSI lumens, compared to the BenQ TH671ST's 3000 ANSI lumens. This makes the ViewSonic better suited for well-lit rooms or larger audiences.
Is the price difference worth it for the ViewSonic LS741HD?
The ViewSonic LS741HD is approximately $400 more, offering 2000 additional lumens, a long-life laser light source, and greater installation flexibility. It's worth it for demanding commercial use or bright environments prioritizing longevity and superior brightness.
Which projector is more flexible for installation?
The BenQ TH671ST is short-throw (100" from 5ft), ideal for small spaces. The ViewSonic LS741HD offers a 1.6x optical zoom and full H+V keystone, providing more placement flexibility in larger rooms despite its standard throw ratio.
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