Optoma GT1080HDR vs BenQ TH671ST
The Two Classic Short-Throw Gaming Projectors

Optoma GT1080HDR
Quick Verdict
Jump to Final VerdictChoose the Optoma GT1080HDR:
- • 8.4ms input lag in Enhanced Gaming mode
- • Shorter 0.5:1 throw — 100" from ~3.5 feet
- • Brighter, with HDR10 support
Choose the BenQ TH671ST:
- • Better color accuracy out of the box
- • Higher owner rating
- • Quieter operation in eco modes
Spec-by-Spec Comparison
| Specification | Optoma GT1080HDR | BenQ TH671ST |
|---|---|---|
| Price | $925 | $949 |
| Resolution | 1080p | 1080p |
| Brightness | 3,800 lumens | 3,000 lumens |
| Input Lag | 8.4ms | — |
| Max Refresh Rate | 120Hz | — |
| Contrast Ratio | 15,000:1 | 16,000:1 |
| Technology | DLP | DLP |
| Throw Type | Short | Short |
| Light Source Life | 15,000 hrs | — |
| Weight | 6.6 lbs | 5.9 lbs |
| Owner Rating | 4.3/5 | 4.5/5 |
| Reviews | 279 | 279 |
Bold marks the better value per row. Prices and ratings update from Amazon automatically; blank cells mean the spec isn't verified for that model.
Final Verdict
The GT1080HDR is the speed pick: 8.4ms Enhanced Gaming mode, higher brightness, and a tighter 0.5:1 throw that makes 100 inches from about 3.5 feet. The TH671ST answers with better out-of-box color and BenQ’s reliability record. For pure gaming in a small room, Optoma; for a short-throw that also does movie night duty, BenQ.
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