Our Verdict
BenQ TH671ST Wins

Offers 3000 lumens and low input lag for gaming. Choose Optoma ML1080UST for portable, ultra-short throw streaming with Google TV and a laser light source from under a foot.
Bottom Line: BenQ TH671ST is the better choice. Offers 3000 lumens and low input lag for gaming.
Key Differences
The most significant spec differences at a glance
Brightness Ansi Lumens
100% moreAdvantages
Where each product wins
BenQ
- Brightness Ansi Lumens: 100% higher (3000 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy BenQ if...
BenQ TH671ST | 1080p
If you are a dedicated gamer or home theater enthusiast prioritizing a bright, clear image and responsive gameplay, the BenQ TH671ST is your best choice. It offers 3000 ANSI lumens for vibrant visuals in varying light conditions and features a specialized gaming mode ensuring low input lag crucial for competitive gaming. Its short-throw capability projects a 100-inch screen from just 5 feet, making it suitable for moderate-sized rooms where a traditional long-throw projector isn't feasible, without needing smart TV features built-in.
Buy Optoma if...
Optoma ML1080UST PHOTON GO
The Optoma ML1080UST is ideal for individuals seeking ultimate portability, integrated streaming, and space-saving projection. If you live in a small apartment, want to host spontaneous movie nights indoors or out, or desire a clutter-free setup, its ultra-short throw projects a massive 100-inch image from under a foot. With integrated Google TV, certified streaming apps, and a 1.5-hour built-in battery, it's perfect for on-the-go entertainment without needing external devices, powered by a long-lasting triple RGB laser source.
Spec Comparison
7 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $949 | $899 |
| Rating | 4.4(843) | 4.0(32) |
| Brightness Ansi Lumens | 3000 | 0 |
| Native Resolution | 1080p | 1080p |
| Throw Ratio | 0.69 | — |
| Keystone Correction | Vertical | — |
| Hdr Support | — | Yes |
| Light Source | — | Laser |
| Speaker Watts | — | 20W |
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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 ML1080UST PHOTON
- Ultra-short throw projects 100" from under a foot.
- Integrated Google TV for certified streaming apps.
- Triple RGB laser for accurate 1080p color.
- Laser light source eliminates lamp replacements.
- Battery life limited to 1.5 hours.
- Requires perfectly flat projection surface.
Frequently Asked Questions
Common questions about this comparison
Which projector is better for gaming?
The BenQ TH671ST is superior for gaming, featuring a dedicated gaming mode for low input lag and a bright 3000 lumens. The Optoma ML1080UST does not specify gaming features and is more focused on streaming.
What's the main difference in brightness between these two projectors?
The BenQ TH671ST offers a strong 3000 ANSI lumens, ensuring bright images even in ambient light. The Optoma ML1080UST does not specify its ANSI lumens, but as a portable, battery-powered unit, it's generally suited for darker environments.
Is the $50 price difference worth it?
The $50 difference is minor. The BenQ ($949) offers higher brightness (3000 lumens) and gaming optimization. The Optoma ($899) provides portability, ultra-short throw, and integrated Google TV, making the value dependent on your primary use case.
Which projector offers better streaming capabilities?
The Optoma ML1080UST excels with integrated Google TV, including certified Netflix and Disney+, plus built-in Wi-Fi. The BenQ TH671ST is a standard projector, requiring an external streaming device for content.
What is the main difference in throw distance?
The BenQ TH671ST is a short-throw projector, projecting a 100-inch image from about 5 feet. The Optoma ML1080UST is an ultra-short throw, capable of a 100-inch image from under a foot, ideal for small spaces.
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