3840 × 2160
4K UHD / 2160p · 16:9 · 8,294,400 pixels
About 4K UHD / 2160p Resolution
Devices with 3840 x 2160 Resolution
- LG 27UK850-W 27-inch 4K Monitor
- Samsung 55-inch QN85B Neo QLED TV
- Sony PlayStation 5 (native 4K output)
- Xbox Series X
- Dell U2723QE 27-inch UltraSharp
- Apple TV 4K
Common Use Cases
- Professional video editing and color grading
- High-fidelity console and PC gaming
- Large-screen media consumption (TVs 50+)
- Photography editing with pixel-level precision
- Multi-window productivity on 27-32 inch displays
Frequently Asked Questions
What is the difference between 4K and UHD?
The DCI 4K cinema standard is 4096x2160, while UHD (Ultra High Definition) is 3840x2160. Consumer televisions and monitors use the UHD standard but are marketed as '4K' for simplicity. The difference of 256 horizontal pixels is negligible in practice, and both terms are used interchangeably in the consumer market. True DCI 4K is primarily used in professional cinema projection.
Can you tell the difference between 1080p and 4K?
On screens 40 inches and larger, the difference is immediately obvious, with dramatically sharper text, more detailed images, and smoother edges. On a 27-inch monitor at normal viewing distance, the improvement is clearly visible but less dramatic. Below 24 inches, the human eye struggles to perceive the added detail at typical viewing distances, which is why phone manufacturers have largely stopped pursuing resolutions beyond 1440p.
Do I need a special HDMI cable for 4K?
For 4K at 60Hz, you need at least an HDMI 2.0 cable (18 Gbps bandwidth). For 4K at 120Hz (used in gaming), HDMI 2.1 is required, supporting up to 48 Gbps. DisplayPort 1.4 also supports 4K at 120Hz with DSC (Display Stream Compression). Using an older HDMI 1.4 cable will limit you to 4K at 30Hz, which is too slow for most interactive use.
How much internet speed do I need to stream 4K?
Netflix recommends at least 15 Mbps for 4K streaming, while YouTube suggests 20 Mbps for a reliable 4K experience. Services using more efficient codecs like AV1 can deliver acceptable 4K quality at lower bitrates. For a buffer-free experience, having 25 Mbps or more dedicated to streaming is ideal, especially if multiple devices share the same connection.
Is 4K worth it for a monitor?
For a 27-inch or larger monitor, 4K is absolutely worth it if your primary use involves text-heavy work, photo/video editing, or consuming 4K content. The text clarity alone is a significant quality-of-life improvement. For gaming, it depends on your GPU budget — if you can afford a high-end graphics card, 4K gaming is a stunning experience, but 1440p remains the better value proposition for most gamers.