- Attenborough.film
- Compare
- 4K550ST vs PX727-4K
Optoma 4K550ST vs ViewSonic PX727-4K
What 4K550ST does better (4) and where PX727-4K wins (4) — every spec side by side.
Dimensions
Size comparison
4K550STPX727-4K
| 4K550ST | PX727-4K | Difference | |
|---|---|---|---|
| Height | 129 mm | 135 mm | −6 mm |
| Width | 392 mm | 332 mm | +60 mm |
| Depth | 281 mm | 261 mm | +20 mm |
| Weight | 5.9 kg | 4.2 kg | +1.7 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is 4K550ST better than PX727-4K?
- Brightness (ANSI / ISO lumens)4,500 lm vs 2,200 lm2×
- Lens shiftVertical vs None
- Ethernet (LAN)Yes · PX727-4K: No
- Fan noise32 dB vs 33 dB+3%
Why is PX727-4K better than 4K550ST?
- Light source life3,000 h vs 4,000 h+33%
- Weight5.9 kg vs 4.2 kg+40%
- Contrast ratio (dynamic / claimed)10,000:1 vs 12,000:1+20%
- Power consumption335 W vs 310 W+8%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 3840 × 2160 (4K UHD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| 4K method | 4K by pixel shifting | 4K by pixel shifting |
| Display technology | DLP | DLP |
| Brightness (ANSI / ISO lumens) | 4,500 lm | 2,200 lm |
| Contrast ratio (dynamic / claimed) | 10,000:1 | 12,000:1 |
| HDR support | Yes | Yes |
| 3D playback | Yes | — |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 120 Hz |
| Game / low-latency mode | — | Yes |
| Lens & placement | ||
| Throw ratio | 0.78:1 | 1.5:1 |
| Throw ratio (zoomed in) | — | 1.8:1 |
| Throw type | Short throw (0.4–1.0:1) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 1.73 m | 3.32 m |
| Smallest image size | 29″ | 30″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | — | 1.2× |
| Lens shift | Vertical | None |
| Keystone correction | — | Yes |
| Automatic keystone correction | — | No |
| Sound | ||
| Built-in speakers (total output) | 10 W | 10 W |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | No |
| VGA input | Yes | Yes |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 335 W | 310 W |
| Light source life | 3,000 h | 4,000 h |
| Light source life (eco mode) | 4,000 h | 15,000 h |
| Design & noise | ||
| Fan noise | 32 dB | 33 dB |
| Fan noise (eco mode) | — | 27 dB |
| Weight | 5.9 kg | 4.2 kg |
| Width | 392 mm | 332 mm |
| Height | 129 mm | 135 mm |
| Depth | 281 mm | 261 mm |
| Colours | White | White |
