BenQ LH830ST vs Optoma GT2100HDR
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Choosing between the BenQ LH830ST and Optoma GT2100HDR? Both compete in the Projector segment. Here’s how they compare across the specs that matter most for your home theater.
Pricing for both models is currently unavailable. Check the retailer links below for current deals.
Looking at overall performance dimensions: The BenQ LH830ST scores higher in value. The Optoma GT2100HDR leads in gaming performance, form factor, room fit. They score similarly in video quality, ease of use.
The Optoma GT2100HDR offers higher brightness at 4200 ANSI lumens vs 4000. More lumens means a brighter image, critical if you can't fully darken your room. Below 2000 lumens needs a dedicated dark room; 3000+ handles ambient light. In a dedicated dark room, contrast ratio and color accuracy may matter more than raw brightness.
The Optoma GT2100HDR holds an advantage across more performance dimensions, but the BenQ LH830ST may still be the better pick depending on which specs matter most to your setup. See the detailed comparison table below for the full breakdown.
For most home theaters, the Optoma GT2100HDR is the stronger choice — it leads in 3 of 6 scored dimensions. The BenQ LH830ST makes more sense if you prioritize the 1 dimension where it leads.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
BenQ LH830ST
Optoma GT2100HDR
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Native Resolution | 1080p | 1080p |
| Technology | DLP | DLP |
| Throw Ratio Min | 0.496 | 0.496 |
| Throw Ratio Max | 0.496 | 0.496 |
| Lens Shift V | — | 16% |
| Lens Shift H | — | — |
| ANSI Lumens | 4000 | 4200 |
| CLO Lumens | — | — |
| Contrast Ratio | 3000000:1 | 300000:1 |
| HDR Support | HDR10, HLG | HDR10, HLG |
| Input Lag | 16.7ms | 8.6ms |
| Lamp Life | 30000hrs | 30000hrs |
| Light Source | laser | laser |
| Lens Quality | — | — |
| Tone Mapping | — | — |
| Ultra Short Throw | Yes | Yes |
| Chip Size | — | — |
| Color Depth | 30bit | — |
| Zoom Ratio | 1 | — |
| Zoom Type | fixed | fixed |
| Focus Type | — | — |
| Noise (Normal) | 30dB | 36dB |
| Noise (Eco) | 24dB | 29dB |
| Power Draw | 230W | 173W |
| HDMI Inputs | 2 | 1 |
| HDMI Version | 2.0 | 2.0 |
| 3D Support | Yes | Yes |
| Built-in Speaker | Yes | Yes |
| Speaker Power | 15W | 15W |
| Wi-Fi | No | No |
| Bluetooth | Yes | No |
| Streaming Apps | Yes | No |
| Lens Memory | No | No |
| 12V Trigger | No | No |
| Ethernet | Yes | No |
| Frame Interpolation | No | No |
| Native Aspect | — | 16:9 |
Key Differences
- Contrast Ratio: BenQ LH830ST at 3000000:1 vs Optoma GT2100HDR at 300000:1
- HDMI Inputs: BenQ LH830ST at 2 vs Optoma GT2100HDR at 1
- Input Lag: BenQ LH830ST at 16.7ms vs Optoma GT2100HDR at 8.6ms. Sub-20ms is excellent for gaming. Above 40ms feels sluggish. Only matters for interactive content — film and TV don't benefit from low input lag.
- Power Draw: BenQ LH830ST at 230W vs Optoma GT2100HDR at 173W
- Noise (Eco): BenQ LH830ST at 24dB vs Optoma GT2100HDR at 29dB
Which Should You Choose?
Choose BenQ LH830ST if you want:
- + better contrast ratio
- + better noise (normal)
- + better noise (eco)
Choose Optoma GT2100HDR if you want:
- + better ansi lumens — more lumens means a brighter image, critical if you can't fully darken your room
- + better input lag — sub-20ms is excellent for gaming
- + better power draw
See Where These Rank
Check our editorial rankings to see how BenQ LH830ST and Optoma GT2100HDR compare to the rest of the field.
Best Projector RankingsRelated Calculators
Specifications sourced from manufacturer datasheets and verified against retailer listings. Prices updated hourly from authorized retailers. Scoring uses our open methodology — products are never ranked, promoted, or suppressed based on affiliate commission rates.
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