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- M311 vs UHD30
Acer M311 vs Optoma UHD30
What M311 does better (4) and where UHD30 wins (5) — every spec side by side.
Dimensions
Size comparison
M311UHD30
| M311 | UHD30 | Difference | |
|---|---|---|---|
| Height | 114 mm | 118 mm | −4 mm |
| Width | 313 mm | 315 mm | −2 mm |
| Depth | 240 mm | 270 mm | −30 mm |
| Weight | 2.7 kg | 3.9 kg | −1.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is M311 better than UHD30?
- Brightness (ANSI / ISO lumens)4,500 lm vs 3,400 lm+32%
- Automatic keystone correctionYes · UHD30: No
- Light source life6,000 h vs 4,000 h+50%
- Weight2.7 kg vs 3.9 kg+44%
Why is UHD30 better than M311?
- Resolution (on screen)1280 × 800 (WXGA) vs 3840 × 2160 (4K UHD)
- Contrast ratio (dynamic / claimed)20,000:1 vs 500,000:125×
- Native panel resolution1280 × 800 (WXGA) vs 1920 × 1080 (Full HD)
- HDMI inputs1 vs 22×
- Fan noise27 dB vs 26 dB+4%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 1280 × 800 (WXGA) | 3840 × 2160 (4K UHD) |
| Native panel resolution | 1280 × 800 (WXGA) | 1920 × 1080 (Full HD) |
| 4K method | — | 4K by pixel shifting |
| Display technology | DLP | DLP |
| Light source | Lamp | — |
| Brightness (ANSI / ISO lumens) | 4,500 lm | 3,400 lm |
| Contrast ratio (dynamic / claimed) | 20,000:1 | 500,000:1 |
| HDR support | — | Yes |
| Motion interpolation (MEMC) | — | Yes |
| 3D playback | Yes | Yes |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 120 Hz |
| Lens & placement | ||
| Throw ratio | 1.49:1 | 1.5:1 |
| Throw ratio (zoomed in) | 1.67:1 | 1.66:1 |
| Throw type | Standard throw (1.0:1 and longer) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 3.3 m | 3.32 m |
| Smallest image size | 30″ | 33″ |
| Largest image size | 300″ | 302″ |
| Optical zoom | 1.12× | 1.1× |
| Lens shift | — | Vertical |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | Yes | No |
| Sound | ||
| Built-in speakers (total output) | 10 W | 10 W |
| Smart & streaming | ||
| Wi-Fi | Yes | — |
| Connectivity | ||
| HDMI inputs | 1 | 2 |
| HDMI version | — | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | No |
| VGA input | Yes | Yes |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | — | 305 W |
| Light source life | 6,000 h | 4,000 h |
| Light source life (eco mode) | 10,000 h | 15,000 h |
| Design & noise | ||
| Fan noise | 27 dB | 26 dB |
| Fan noise (eco mode) | 24 dB | — |
| Weight | 2.7 kg | 3.9 kg |
| Width | 313 mm | 315 mm |
| Height | 114 mm | 118 mm |
| Depth | 240 mm | 270 mm |
| Colours | White | White |
