The difference that matters
The BenQ LH860ST is brighter (5,000 lumens against 4,000). The BenQ LK830ST lists higher resolution (4K UHD). The BenQ LH860ST costs $100 less at the prices we observed.
Side by side
| Specification | BenQ LK830ST | BenQ LH860ST |
|---|---|---|
| Brightness | 4,000 lm | 5,000 lm |
| Resolution | 4K UHD (3840 × 2160) | Full HD 1080p (1920 × 1080) |
| Native aspect | 16:9 | 16:9 |
| Throw ratio | 0.5:1 | 0.5:1 |
| Distance for a 10.5 × 8 ft 4:3 screen | 7′ | 7′ |
| Brightness on that screen | 36 fL | 45 fL |
| Light source | Laser | Laser |
| Rated life | 20,000 h | 20,000 h |
| Zoom | Fixed | Fixed |
| Lens shift | — | — |
| Input lag | — | — |
| Price seen | $2,499 | $2,399 |
Highlighted rows differ. Figures come from each product's sources; room depth, distances and brightness are FOREference calculations using the same method for both.
Which should you choose?
BenQ LH860ST
Choose the BenQ LH860ST if your room has ambient light or a large screen or price leads the decision.
Before you buy either
- Check the room: room size calculator and ceiling height calculator.
- Confirm what each seller includes — accessories, software trials and bundles change often.
- Read the limitations on each full reference page.
FOREference compares published specifications; we have not tested these products side by side. How we work · Disclosure