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- TH550 vs 4K550ST
BenQ TH550 vs Optoma 4K550ST
What TH550 does better (4) and where 4K550ST wins (7) — every spec side by side.
Dimensions
Size comparison
TH5504K550ST
| TH550 | 4K550ST | Difference | |
|---|---|---|---|
| Height | 120 mm | 129 mm | −9 mm |
| Width | 296 mm | 392 mm | −96 mm |
| Depth | 221 mm | 281 mm | −60 mm |
| Weight | 2.3 kg | 5.9 kg | −3.6 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is TH550 better than 4K550ST?
- Light source life5,000 h vs 3,000 h+67%
- Weight2.3 kg vs 5.9 kg2.6×
- Contrast ratio (dynamic / claimed)20,000:1 vs 10,000:12×
- Power consumption260 W vs 335 W+29%
Why is 4K550ST better than TH550?
- Resolution (on screen)1920 × 1080 (Full HD) vs 3840 × 2160 (4K UHD)
- Built-in speakers (total output)2 W vs 10 W5×
- Brightness (ANSI / ISO lumens)3,500 lm vs 4,500 lm+29%
- Lens shiftNone vs Vertical
- HDR supportNo · TH550: Yes
- Ethernet (LAN)No · TH550: Yes
- Fan noise33 dB vs 32 dB+3%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 1920 × 1080 (Full HD) | 3840 × 2160 (4K UHD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | — | 4K by pixel shifting |
| Display technology | DLP | DLP |
| Light source | Lamp | — |
| Brightness (ANSI / ISO lumens) | 3,500 lm | 4,500 lm |
| Contrast ratio (dynamic / claimed) | 20,000:1 | 10,000:1 |
| HDR support | No | Yes |
| 3D playback | Yes | Yes |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 120 Hz |
| Lens & placement | ||
| Throw ratio | 1.96:1 | 0.78:1 |
| Throw ratio (zoomed in) | 2.15:1 | — |
| Throw type | Standard throw (1.0:1 and longer) | Short throw (0.4–1.0:1) |
| Distance for a 100″ 16:9 image | 4.34 m | 1.73 m |
| Smallest image size | 60″ | 29″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | 1.1× | — |
| Lens shift | None | Vertical |
| Autofocus | No | — |
| Keystone correction | Yes | — |
| Automatic keystone correction | No | — |
| Sound | ||
| Built-in speakers (total output) | 2 W | 10 W |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | Yes |
| VGA input | Yes | Yes |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 260 W | 335 W |
| Light source life | 5,000 h | 3,000 h |
| Light source life (eco mode) | 10,000 h | 4,000 h |
| Design & noise | ||
| Fan noise | 33 dB | 32 dB |
| Fan noise (eco mode) | 29 dB | — |
| Weight | 2.3 kg | 5.9 kg |
| Width | 296 mm | 392 mm |
| Height | 120 mm | 129 mm |
| Depth | 221 mm | 281 mm |
| Colours | White | White |
