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- LK830ST vs GT2100HDR
BenQ LK830ST vs Optoma GT2100HDR
What LK830ST does better (4) and where GT2100HDR wins (4) — every spec side by side.
Why is LK830ST better than GT2100HDR?
- Resolution (on screen)3840 × 2160 (4K UHD) vs 1920 × 1080 (Full HD)
- Maximum refresh rate240 Hz vs 120 Hz2×
- Contrast ratio (dynamic / claimed)3,000,000:1 vs 300,000:110×
- Fan noise30 dB vs 36 dB+20%
Why is GT2100HDR better than LK830ST?
- Brightness (ANSI / ISO lumens)4,000 lm vs 4,200 lm+5%
- Light source life20,000 h vs 30,000 h+50%
- Power consumption250 W vs 173 W+45%
- Weight3.4 kg vs 3 kg+13%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 1920 × 1080 (Full HD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | 4K by pixel shifting | — |
| Display technology | DLP | DLP |
| Light source | Laser | Laser |
| Brightness (ANSI / ISO lumens) | 4,000 lm | 4,200 lm |
| Contrast ratio (dynamic / claimed) | 3,000,000:1 | 300,000:1 |
| HDR support | — | Yes |
| Gaming | ||
| Maximum refresh rate | 240 Hz | 120 Hz |
| Lens & placement | ||
| Throw ratio | 0.5:1 | 0.5:1 |
| Throw type | Short throw (0.4–1.0:1) | Short throw (0.4–1.0:1) |
| Distance for a 100″ 16:9 image | 1.11 m | 1.11 m |
| Smallest image size | 70″ | 36″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | 1.25× | — |
| Lens shift | None | None |
| Autofocus | Yes | — |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 15 W | 15 W |
| Smart & streaming | ||
| Wi-Fi | Yes | Yes |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | Yes |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 250 W | 173 W |
| Light source life | 20,000 h | 30,000 h |
| Design & noise | ||
| Fan noise | 30 dB | 36 dB |
| Fan noise (eco mode) | 24 dB | 29 dB |
| Weight | 3.4 kg | 3 kg |
| Width | — | 274 mm |
| Height | — | 114 mm |
| Depth | — | 216 mm |
| Colours | Black | White |
