Our Verdict
BenQ TH671ST Wins

It offers superior 3000 lumens brightness and low input lag for gaming. Choose HAPPRUN for integrated Google TV, HDR10+, better Dolby audio, and 4K Pixel Shift for a cinematic experience.
Bottom Line: BenQ TH671ST is the better choice. It offers superior 3000 lumens brightness and low input lag for gaming.
Key Differences
The most significant spec differences at a glance
Brightness Ansi Lumens
33% lessAdvantages
Where each product wins
BenQ
- Brightness Ansi Lumens: 33% higher (2000 vs 3000)
Who Should Buy Which?
Find the right product for your needs
Buy HAPPRUN if...
2000 ANSI Official Licensed
If you're a casual viewer prioritizing convenience, smart features, and a cinematic feel for movies and TV shows, the HAPPRUN 2000 is ideal. At a lower price point, it offers integrated Google TV for instant streaming, 4K Pixel Shift with HDR10+ for sharp visuals, and dual 10W Dolby speakers for immersive audio. Its auto-focus and 6D keystone make setup easy for home theater or outdoor movie nights, offering great value for a versatile entertainment hub.
Buy BenQ if...
BenQ TH671ST | 1080p
The BenQ TH671ST is perfect for dedicated gamers and those needing a bright, responsive picture. If low input lag is critical for your competitive gaming sessions, and you need a projector that performs well in rooms with some ambient light due to its 3000 lumens, this is your choice. Its short-throw capability is ideal for smaller spaces, projecting a large image from just 5 feet. Despite the higher price, its native 1080p and gaming-centric features make it a powerhouse for serious entertainment.
Spec Comparison
7 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $400 | $949 |
| Rating | 4.5(169) | 4.4(843) |
| Brightness Ansi Lumens | 2000 | 3000 |
| Native Resolution | 4K Pixel Shift | 1080p |
| Hdr Support | Yes | — |
| Speaker Watts | 20W | — |
| Contrast Ratio | 20000:1 | — |
| Keystone Correction | Full (H+V) | Vertical |
| Throw Ratio | — | 0.69 |
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Pros & Cons
Quick overview of strengths and weaknesses
HAPPRUN 2000 ANSI
- 2000 ANSI lumens supports bright environment viewing.
- Integrated Google TV offers instant access to streaming apps
- Auto focus and 6D keystone ensure rapid image setup.
- 4K resolution with HDR10+ delivers high image quality.
- Ceiling projection requires manual focus and keystone.
- "4K Pixel Shift" is not native 4K resolution.
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.
Frequently Asked Questions
Common questions about this comparison
Which is better for gaming?
BenQ TH671ST is superior for gaming due to its low input lag, ensuring responsive action. While the HAPPRUN offers good visuals, it's not optimized for competitive gaming speed.
What's the main difference in brightness?
The BenQ TH671ST provides 3000 ANSI lumens, making it significantly brighter than the HAPPRUN's 2000 ANSI lumens. This allows the BenQ to perform better in rooms with ambient light.
How do their resolutions compare?
The BenQ offers native 1080p, providing true Full HD. The HAPPRUN uses 4K Pixel Shift, which simulates 4K resolution but isn't native, still offering a sharper image than standard 1080p.
Is the HAPPRUN's price difference worth it?
The HAPPRUN is more affordable. It's worth it if you prioritize smart TV features, better integrated audio, HDR, and 4K Pixel Shift for movies over the BenQ's higher brightness and dedicated gaming performance.
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