- Attenborough.film
- Compare
- TH685P vs LS751HD
BenQ TH685P vs ViewSonic LS751HD
What TH685P does better (1) and where LS751HD wins (5) — every spec side by side.
Dimensions
Size comparison
TH685PLS751HD
| TH685P | LS751HD | Difference | |
|---|---|---|---|
| Height | 110 mm | 132 mm | −22 mm |
| Width | 312 mm | 337 mm | −25 mm |
| Depth | 225 mm | 265 mm | −40 mm |
| Weight | 2.8 kg | 4.5 kg | −1.7 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is TH685P better than LS751HD?
- Weight2.8 kg vs 4.5 kg+61%
Why is LS751HD better than TH685P?
- Light source life4,000 h vs 20,000 h5×
- Built-in speakers (total output)5 W vs 10 W2×
- HDMI inputs1 vs 22×
- Ethernet (LAN)No · TH685P: Yes
- Fan noise35 dB vs 32 dB+9%
Specifications
Side by side
| Picture | ||
| Resolution (on screen) | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| Native panel resolution | 1920 × 1080 (Full HD) | 1920 × 1080 (Full HD) |
| Display technology | DLP | DLP |
| Light source | Lamp | Laser |
| Brightness (ANSI / ISO lumens) | — | 5,000 lm |
| Contrast ratio (dynamic / claimed) | — | 300,000:1 |
| HDR support | — | Yes |
| 3D playback | — | Yes |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 120 Hz |
| Lens & placement | ||
| Throw ratio | 1.13:1 | 1.4:1 |
| Throw ratio (zoomed in) | 1.46:1 | 2.24:1 |
| Throw type | Standard throw (1.0:1 and longer) | Standard throw (1.0:1 and longer) |
| Distance for a 100″ 16:9 image | 2.5 m | 3.1 m |
| Smallest image size | 30″ | 30″ |
| Largest image size | 300″ | 300″ |
| Optical zoom | — | 2× |
| Lens shift | — | Vertical |
| Keystone correction | — | Yes |
| Automatic keystone correction | — | No |
| Sound | ||
| Built-in speakers (total output) | 5 W | 10 W |
| Smart & streaming | ||
| Wi-Fi | — | Yes |
| Connectivity | ||
| HDMI inputs | 1 | 2 |
| HDMI version | — | 2 |
| USB-C video input | Yes | — |
| USB port | Yes | Yes |
| Ethernet (LAN) | No | Yes |
| VGA input | Yes | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | — | 245 W |
| Light source life | 4,000 h | 20,000 h |
| Light source life (eco mode) | 10,000 h | 30,000 h |
| Design & noise | ||
| Fan noise | 35 dB | 32 dB |
| Fan noise (eco mode) | 29 dB | 29 dB |
| Weight | 2.8 kg | 4.5 kg |
| Width | 312 mm | 337 mm |
| Height | 110 mm | 132 mm |
| Depth | 225 mm | 265 mm |
| Colours | White | White |
