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- HZ40ST vs UHD42
Optoma HZ40ST vs Optoma UHD42
What HZ40ST does better (5) and where UHD42 wins (5) — every spec side by side.
Dimensions
Size comparison
HZ40STUHD42
| HZ40ST | UHD42 | Difference | |
|---|---|---|---|
| Height | 122 mm | 118 mm | +4 mm |
| Width | 337 mm | 315 mm | +22 mm |
| Depth | 265 mm | 270 mm | −5 mm |
| Weight | 5.5 kg | 3.9 kg | +1.6 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is HZ40ST better than UHD42?
- Light source life30,000 h vs 4,000 h7.5×
- Brightness (ANSI / ISO lumens)4,200 lm vs 3,400 lm+24%
- Built-in speakers (total output)20 W vs 10 W2×
- Contrast ratio (dynamic / claimed)2,500,000:1 vs 500,000:15×
- Ethernet (LAN)Yes · UHD42: No
Why is UHD42 better than HZ40ST?
- Resolution (on screen)1920 × 1080 (Full HD) vs 3840 × 2160 (4K UHD)
- Lens shiftNone vs Vertical
- Maximum refresh rate85 Hz vs 120 Hz+41%
- Fan noise32 dB vs 26 dB+23%
- Weight5.5 kg vs 3.9 kg+41%
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 | Laser | — |
| Brightness (ANSI / ISO lumens) | 4,200 lm | 3,400 lm |
| Contrast ratio (dynamic / claimed) | 2,500,000:1 | 500,000:1 |
| HDR support | Yes | Yes |
| 3D playback | Yes | Yes |
| Gaming | ||
| Maximum refresh rate | 85 Hz | 120 Hz |
| Lens & placement | ||
| Throw ratio | 0.5:1 | 1.21:1 |
| Throw ratio (zoomed in) | — | 1.59:1 |
| Throw type | Short throw (0.4–1.0:1) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 1.11 m | 2.68 m |
| Smallest image size | 36″ | 34″ |
| Largest image size | 300″ | 302″ |
| Optical zoom | — | 1.3× |
| Lens shift | None | Vertical |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 20 W | 10 W |
| Smart & streaming | ||
| Wi-Fi | Yes | — |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | 2 | — |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | No |
| VGA input | Yes | Yes |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | — | 305 W |
| Light source life | 30,000 h | 4,000 h |
| Light source life (eco mode) | — | 15,000 h |
| Design & noise | ||
| Fan noise | 32 dB | 26 dB |
| Fan noise (eco mode) | 30 dB | — |
| Weight | 5.5 kg | 3.9 kg |
| Width | 337 mm | 315 mm |
| Height | 122 mm | 118 mm |
| Depth | 265 mm | 270 mm |
| Colours | White | White |
