Head-to-head
BenQ TK700STi vs Optoma UHD55
Side-by-side comparison of the BenQ TK700STi and Optoma UHD55: throw ratio, brightness, resolution, input lag and price — plus which one to buy.
Quick verdict
The BenQ TK700STi and Optoma UHD55 are both standard-throw projectors in a similar price range. The Optoma UHD55 is brighter — 3,600 vs 3,000 lumens. The BenQ TK700STi can sit closer to the screen (throw ratio from 0.90 vs 1.21). The Optoma UHD55 costs less — about $1,499 vs $1,599. For gaming, the Optoma UHD55 has the lower input lag at 16 ms.
| Spec | BenQ TK700STi | Optoma UHD55 |
|---|---|---|
| Throw ratio | 0.9–1.08 | 1.21–1.59 |
| Brightness | 3,000 lumens | 3,600 lumens |
| Resolution | 4K UHD | 4K UHD |
| HDR | Yes | Yes |
| Light source | lamp | lamp |
| Input lag | 16.9 ms | 16 ms |
| Price | ~$1,599 | ~$1,499 |
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Throw distance: BenQ TK700STi vs Optoma UHD55
How far each projector must sit from the screen for the same image size.
| Screen | BenQ TK700STi | Optoma UHD55 |
|---|---|---|
| 80″ | 5.2–6.3 ft | 7.0–9.2 ft |
| 100″ | 6.5–7.8 ft | 8.8–11.5 ft |
| 120″ | 7.8–9.4 ft | 10.5–13.9 ft |
| 150″ | 9.8–11.8 ft | 13.2–17.3 ft |
Which should you buy?
- • Choose the Optoma UHD55 if a brighter picture in ambient light matters most.
- • Choose the Optoma UHD55 for gaming — lower input lag means more responsive play.
- • Choose the Optoma UHD55 if you want to spend less for similar core performance.
Frequently asked questions
The Optoma UHD55 is brighter, rated at 3,600 lumens versus 3,000 lumens.
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