LG UltraGear 27G810A-B / LG UltraGear OLED 45GR95QE-B

IPS panels offer wide viewing angles and consistent colour; black level stays behind OLED and VA panels.

800R means the screen curves like part of a circle with an 800 mm radius, wrapping the edges around your view. At 45 inches, 1440p gives low pixel density: up close, text and fine detail look less sharp than on a 27-inch 1440p screen.

A small pixel pitch makes text sharper; 4K at 27 inches makes interface elements smaller.

Dual Mode lowers the resolution to Full HD to allow a higher refresh rate; the image is less sharp in that mode.

LG gives this figure for the fastest response time setting; it gives no figure for other settings.

1000:1 contrast is typical for IPS; blacks can look grey in a dark room.

LG’s typical brightness refers to a full-screen SDR image; with self-emissive OLED pixels black switches fully off, giving very high contrast.

DisplayHDR 400 is VESA’s lowest HDR certification tier; HDR content plays but bright highlights stay limited.

DCI-P3 coverage describes how much of the wide colour space used in films and games can be shown.

Hardware calibration writes settings into the monitor itself through LG Calibration Studio, so the colour setup stays with the monitor even if the computer changes.

Variable refresh matches the screen to the graphics card’s frame rate, reducing tearing and stutter.

DSC uses visually lossless compression to fit a 4K 180 Hz signal into DisplayPort 1.4 bandwidth.

The USB ports act as a hub; no USB-C connection for video or charging is listed.

Headphones or external speakers are needed for sound.

Pivot lets the screen be used in portrait; VESA 100 × 100 fits standard monitor arms.

The external adapter keeps the monitor thinner but takes extra space on the desk.

Use the weight without the stand when choosing a monitor arm.

No USB upstream cable is listed.

Box contents can vary by country.

240 Hz shows very smooth motion when a game approaches 240 frames per second, which needs a powerful graphics card. 0.03 ms grey-to-grey describes the fast transition of OLED pixels; it is not total input lag.

G-SYNC Compatible and FreeSync Premium match the refresh rate to the graphics card’s frame rate to reduce tearing and stutter. HDR effect is a picture mode that adds HDR-like contrast to SDR content in software; it is not real HDR.

Black Stabilizer brightens detail in dark scenes; Dynamic Action Sync is a mode that reduces input lag.

PiP shows a second input in a small window over the main picture, for example a PC and a console at the same time. LG does not list PbP (side-by-side split) for this model.

DSC (Display Stream Compression) compresses high-bandwidth signals such as 3440 × 1440 at 240 Hz over DisplayPort 1.4 without visible loss. With the USB upstream connected, the monitor’s USB-A ports act as a hub for the computer. A headset with a mic plugs into the 4-pole jack; DTS Headphone:X adds virtual surround. No built-in speakers are listed.