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- LS751HD vs X2-4K
ViewSonic LS751HD vs ViewSonic X2-4K
What LS751HD does better (4) and where X2-4K wins (7) — every spec side by side.
Dimensions
Size comparison
LS751HDX2-4K
| LS751HD | X2-4K | Difference | |
|---|---|---|---|
| Height | 132 mm | 121 mm | +11 mm |
| Width | 337 mm | 355 mm | −18 mm |
| Depth | 265 mm | 244 mm | +21 mm |
| Weight | 4.5 kg | 3.6 kg | +0.9 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is LS751HD better than X2-4K?
- Brightness (ANSI / ISO lumens)5,000 lm vs 2,150 lm2.3×
- Largest image size300″ vs 150″2×
- Ethernet (LAN)Yes · X2-4K: No
- Fan noise32 dB vs 33 dB+3%
Why is X2-4K better than LS751HD?
- Resolution (on screen)1920 × 1080 (Full HD) vs 3840 × 2160 (4K UHD)
- Maximum refresh rate120 Hz vs 240 Hz2×
- Light source life20,000 h vs 30,000 h+50%
- Contrast ratio (dynamic / claimed)300,000:1 vs 3,000,000:110×
- Built-in speakers (total output)10 W vs 12 W+20%
- Weight4.5 kg vs 3.6 kg+25%
- Power consumption245 W vs 236 W+4%
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 | LED |
| Brightness (ANSI / ISO lumens) | 5,000 lm | 2,150 lm |
| Contrast ratio (dynamic / claimed) | 300,000:1 | 3,000,000:1 |
| HDR support | Yes | Yes |
| 3D playback | Yes | — |
| Gaming | ||
| Maximum refresh rate | 120 Hz | 240 Hz |
| Game / low-latency mode | — | Yes |
| Lens & placement | ||
| Throw ratio | 1.4:1 | 0.69:1 |
| Throw ratio (zoomed in) | 2.24:1 | 0.83:1 |
| Throw type | Standard throw (1.0:1 and longer) | Short throw (0.4–1.0:1) |
| Distance for a 100″ 16:9 image | 3.1 m | 1.53 m |
| Smallest image size | 30″ | 60″ |
| Largest image size | 300″ | 150″ |
| Optical zoom | 2× | 2× |
| Lens shift | Vertical | Vertical |
| Keystone correction | Yes | Yes |
| Automatic keystone correction | No | No |
| Sound | ||
| Built-in speakers (total output) | 10 W | 12 W |
| Smart & streaming | ||
| Built-in smart platform | — | Yes |
| Wi-Fi | Yes | Yes |
| Bluetooth | — | Yes |
| Internal storage | — | 16 GB |
| Connectivity | ||
| HDMI inputs | 2 | 2 |
| HDMI version | 2 | 2 |
| USB port | Yes | Yes |
| Ethernet (LAN) | Yes | No |
| VGA input | No | No |
| Audio output | Yes | Yes |
| Battery, power & lifetime | ||
| Power consumption | 245 W | 236 W |
| Light source life | 20,000 h | 30,000 h |
| Light source life (eco mode) | 30,000 h | — |
| Design & noise | ||
| Fan noise | 32 dB | 33 dB |
| Fan noise (eco mode) | 29 dB | 29 dB |
| Weight | 4.5 kg | 3.6 kg |
| Width | 337 mm | 355 mm |
| Height | 132 mm | 121 mm |
| Depth | 265 mm | 244 mm |
| Colours | White | Black |
