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- UltraFine 27UQ850 vs UltraFine 40U990A
LG UltraFine 27UQ850 vs LG UltraFine 40U990A
What UltraFine 27UQ850 does better (2) and where UltraFine 40U990A wins (7) — every spec side by side.
vs
8.2Screen9.1
5.8Connectivity8.6
3.9Design & ergonomics2.8
Dimensions
Size comparison
UltraFine 27UQ850UltraFine 40U990A
| UltraFine 27UQ850 | UltraFine 40U990A | Difference | |
|---|---|---|---|
| Height | 570 mm | 614 mm | −44 mm |
| Width | 614 mm | 948 mm | −334 mm |
| Depth | 239 mm | 260 mm | −21 mm |
| Weight | 5.8 kg | 14.1 kg | −8.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is UltraFine 27UQ850 better than UltraFine 40U990A?
- Pixel density163 ppi vs 140 ppi+16%
- Weight5.85 kg vs 14.1 kg2.4×
Why is UltraFine 40U990A better than UltraFine 27UQ850?
- Refresh rate60 Hz vs 120 Hz2×
- HDRDisplayHDR 400 vs DisplayHDR 600
- SwivelNo · UltraFine 27UQ850: Yes
- Brightness (typical)400 nits vs 450 nits+12%
- USB-C charging (Power Delivery)90 W vs 96 W+7%
- Screen size27″ vs 39.7″+47%
- Height adjustment110 mm vs 130 mm+18%
Specifications
Side by side
| Display | ||
| Screen size | 27″ | 39.7″ |
| Resolution | 3840 × 2160 | 5120 × 2160 |
| Resolution class | 4K UHD | 5K |
| Pixel density | 163 ppi | 140 ppi |
| Aspect ratio | 16:9 | 21:9 |
| Panel type | IPS | IPS |
| Refresh rate | 60 Hz | 120 Hz |
| Brightness (typical) | 400 nits | 450 nits |
| Contrast ratio (static) | 2,000:1 | 2,000:1 |
| Response time | 5 ms | 5 ms |
| Anti-glare / matte screen | Yes | Yes |
| Curved screen | — | Yes |
| Colour | ||
| DCI-P3 coverage | 98% | 99% |
| Colour depth | 10 bit | — |
| HDR | DisplayHDR 400 | DisplayHDR 600 |
| Connectivity | ||
| USB-C video input (one cable) | Yes | Yes |
| USB-C charging (Power Delivery) | 90 W | 96 W |
| Thunderbolt | — | Yes |
| KVM switch | Yes | Yes |
| HDMI inputs | 2 | 2 |
| DisplayPort inputs | 1 | 1 |
| USB hub | Yes | Yes |
| Built-in speakers | Yes | Yes |
| Design & ergonomics | ||
| Height adjustment | 110 mm | 130 mm |
| Pivot (portrait rotation) | Yes | — |
| Swivel | No | Yes |
| Weight | 5.85 kg | 14.1 kg |
| Width | 614 mm | 948 mm |
| Height | 570 mm | 614 mm |
| Depth | 239 mm | 260 mm |
| Product line | LG UltraFine | — |
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