Our Verdict
BenQ TH671ST Wins

Its dedicated Gaming Mode ensures low input lag for responsive action. Choose Optoma GT2000HDR for superior brightness (3500 vs 3000 lumens), HDR support, and a long-life laser light source for home theater use.
Bottom Line: BenQ TH671ST is the better choice. Its dedicated Gaming Mode ensures low input lag for responsive action.
Key Differences
The most significant spec differences at a glance
Brightness Ansi Lumens
14% lessAdvantages
Where each product wins
Optoma
- Brightness Ansi Lumens: 14% higher (3000 vs 3500)
Who Should Buy Which?
Find the right product for your needs
Buy BenQ if...
BenQ TH671ST | 1080p
If you're a serious gamer prioritizing responsive action, the BenQ TH671ST is your ideal choice. Its dedicated Gaming Mode ensures minimal input lag, crucial for competitive play. You'll appreciate the clear native 1080p resolution and the ability to project a large 100-inch image from just 5 feet, perfect for smaller gaming spaces. This projector suits those who want a focused gaming experience without breaking the bank, offering great performance for its $949 price point.
Buy Optoma if...
Optoma GT2000HDR Ultra-Compact Short
The Optoma GT2000HDR is perfect for home theater enthusiasts and those seeking a low-maintenance, high-performance projector. If you need exceptional brightness for diverse lighting conditions, its 3500 lumens and laser light source (offering long life and instant on/off) are key. HDR compatibility ensures enhanced contrast and vibrant colors for movies and shows. Ideal for users valuing durability and superior image depth over dedicated gaming optimization, it's a solid investment for a premium home viewing experience, despite the slightly higher price.
Spec Comparison
6 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $949 | $1199 |
| Rating | 4.4(843) | 4.1(165) |
| Brightness Ansi Lumens | 3000 | 3500 |
| Native Resolution | 1080p | 1080p |
| Throw Ratio | 0.69 | — |
| Keystone Correction | Vertical | — |
| Hdr Support | — | Yes |
| 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.
Optoma GT2000HDR Ultra-Compact
- 3500 lumens delivers bright images in various lighting.
- Laser light source provides long life, instant on/off.
- Full HD 1080p resolution ensures crisp visual detail.
- HDR compatibility enhances contrast and color depth.
- External power supply adds extra bulk and cable mess.
- Fixed short throw may limit adaptable projector setup.
- 1080p resolution is not the latest 4K visual standard.
Frequently Asked Questions
Common questions about this comparison
Which projector is better for gaming?
The BenQ TH671ST is explicitly designed for gaming, featuring a dedicated Gaming Mode for intense low input lag. While the Optoma can handle games, the BenQ optimizes for responsiveness, making it the preferred choice for dedicated gamers.
What's the main difference in brightness?
The Optoma GT2000HDR offers 3500 ANSI lumens, which is significantly brighter than the BenQ TH671ST's 3000 ANSI lumens. This higher brightness makes the Optoma more suitable for rooms with ambient light.
Is the Optoma's laser light source a significant advantage?
Yes, Optoma's laser light source provides a much longer lifespan and instant on/off capabilities compared to the BenQ's traditional lamp-based system. This translates to less maintenance and quicker startup times for the Optoma.
Which offers better picture quality?
Both deliver native 1080p resolution for crisp visuals. However, the Optoma adds HDR compatibility, enhancing contrast and color depth for a potentially richer and more immersive viewing experience, especially with HDR content.
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