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- 4K550ST vs HZ40ST
Optoma 4K550ST vs Optoma HZ40ST
What 4K550ST does better (4) and where HZ40ST wins (4) — every spec side by side.
Dimensions
Size comparison
4K550STHZ40ST
| 4K550ST | HZ40ST | Difference | |
|---|---|---|---|
| Height | 129 mm | 122 mm | +7 mm |
| Width | 392 mm | 337 mm | +55 mm |
| Depth | 281 mm | 265 mm | +16 mm |
| Weight | 5.9 kg | 5.5 kg | +0.4 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is 4K550ST better than HZ40ST?
- Resolution (on screen)3840 × 2160 (4K UHD) vs 1920 × 1080 (Full HD)
- Lens shiftVertical vs None
- Brightness (ANSI / ISO lumens)4,500 lm vs 4,200 lm+7%
- Maximum refresh rate120 Hz vs 85 Hz+41%
Why is HZ40ST better than 4K550ST?
- Light source life3,000 h vs 30,000 h10×
- Built-in speakers (total output)10 W vs 20 W2×
- Contrast ratio (dynamic / claimed)10,000:1 vs 2,500,000:1250×
- Weight5.9 kg vs 5.5 kg+7%
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 |
| Brightness (ANSI / ISO lumens) | 4,500 lm | 4,200 lm |
| Contrast ratio (dynamic / claimed) | 10,000:1 | 2,500,000:1 |
| HDR support | Yes | Yes |
| 3D playback | Yes | Yes |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 85 Hz |
| Lens & placement | ||
| Throw ratio | 0.78:1 | 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 | 1.73 m | 1.11 m |
| Smallest image size | 29″ | 36″ |
| Largest image size | 300″ | 300″ |
| Lens shift | Vertical | None |
| Keystone correction | — | Yes |
| Automatic keystone correction | — | No |
| Sound | ||
| Built-in speakers (total output) | 10 W | 20 W |
| Smart & streaming | ||
| Wi-Fi | — | Yes |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | — | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | Yes |
| VGA input | Yes | Yes |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 335 W | — |
| Light source life | 3,000 h | 30,000 h |
| Light source life (eco mode) | 4,000 h | — |
| Design & noise | ||
| Fan noise | 32 dB | 32 dB |
| Fan noise (eco mode) | — | 30 dB |
| Weight | 5.9 kg | 5.5 kg |
| Width | 392 mm | 337 mm |
| Height | 129 mm | 122 mm |
| Depth | 281 mm | 265 mm |
| Colours | White | White |
