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- ViewSonic LX-K
ViewSonic
ViewSonic LX-K: every generation
3 generations from 2023 to 2026, latest — ViewSonic LX750-4K. What each generation gained and lost.
2026
Better than LX720-4K
- Brightness (ANSI / ISO lumens) 3,500 lm → 4,000 lm
Worse
LX720-4K vs LX750-4K — full comparison
- Contrast ratio (dynamic / claimed) 300,000:1 → 1,200:1
- Fan noise 32 dB → 33 dB
2025
Worse
LX700-4K vs LX720-4K — full comparison
- Built-in speakers (total output) 15 W → 10 W
- Light source life 30,000 h → 20,000 h
- Contrast ratio (dynamic / claimed) 3,000,000:1 → 300,000:1
2023
The first generation in our catalog.
Specifications
Key specs by generation
| LX700-4K · 2023 | LX720-4K · 2025 | LX750-4K · 2026 | |
|---|---|---|---|
| Resolution (on screen) | 3840 × 2160 (4K UHD) | 3840 × 2160 (4K UHD) | 3840 × 2160 (4K UHD) |
| 4K method | 4K by pixel shifting | 4K by pixel shifting | 4K by pixel shifting |
| Brightness (ANSI / ISO lumens) | 3,500 lm | 3,500 lm | 4,000 lm |
| Light source | Laser | Laser | Laser |
| Built-in speakers (total output) | 15 W | 10 W | 10 W |
| Fan noise | 31 dB | 32 dB | 33 dB |
| Weight | 3.3 kg | 3.5 kg | 3.5 kg |
| Score | 9.4 | 7.8 | 5.9 |