LG UltraGear 27-inch 4th Gen. OLED QHD Gaming Monitorㅣ27GX790B with Dual Mode (720Hz@HD, 540Hz@QHD), 0.02ms(GtG)
Model # 27GX790B-B
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SKU: 27GX790B-B
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ETA IS Q2 2026 - PRICING NOT CONFIRMED YET - PLEASE CALL OR EMAIL FOR MORE INFORMATION
27GX790B-B — LG UltraGear™ 27" QHD OLED 540Hz (Dual Mode)
27-inch 4th Gen Tandem OLED gaming monitor with QHD up to 540Hz or HD up to 720Hz Dual Mode, 0.03ms GtG, up to 1500 nits peak brightness, DisplayHDR™ True Black 500, DP 2.1 DSC, HDMI 2.1, USB-C (DP Alt), hardware-calibration ready, and OLED Care tools for esports-grade clarity.
Highlights
- 4th Gen Primary RGB Tandem OLED with up to 1500 nits peak brightness and True Black 500.
- QHD 540Hz or HD 720Hz Dual Mode, 0.03ms GtG, ClearMR 21000, and OLED Care tools.
- DP 2.1 (DSC), dual HDMI 2.1, USB-C DP Alt, hardware calibration, and KVM-ready workflow.
- AdaptiveSync: G-SYNC Compatible, FreeSync Premium Pro, VESA AdaptiveSync certified.
- LG Switch app, PBP/PIP, and ergonomic stand with slim, space-saving base.
Gallery & Assets
(27GX790B-B)
Key Features
| Display – Size [Inch] | 27 |
| Display – Resolution | 2560 × 1440 (QHD) |
| Display – Panel Type | 4th Gen Tandem OLED |
| Display – Refresh Rate (Max.) | 540 Hz (QHD) / 720 Hz (HD Dual Mode) |
| Display – Response Time | 0.03 ms (GtG) |
| Display – Brightness (Peak) | Up to 1500 nits |
| Display – Colour Gamut (Typ.) | DCI-P3 98% |
| Display – HDR | DisplayHDR™ True Black 500 |
| Sync / Certification | G-SYNC Compatible, FreeSync Premium Pro, VESA AdaptiveSync |
| Ports (Main) | DP 2.1 (DSC) ×1, HDMI 2.1 ×2, USB-C (DP Alt) ×1 |
ETA IS Q2 2026 — PRICING NOT CONFIRMED YET — PLEASE CALL OR EMAIL FOR MORE INFORMATION
27GX790B-B — LG UltraGear™ OLED Gaming Monitor
27-inch 4th Gen Tandem OLED gaming monitor with QHD 540Hz (Dual Mode HD 720Hz), 0.03ms GtG, up to 1500 nits peak, DisplayHDR™ True Black 500, AdaptiveSync (G-SYNC Compatible / FreeSync Premium Pro / VESA AdaptiveSync), DP 2.1, dual HDMI 2.1, USB-C (DP Alt), hardware calibration ready, and OLED Care tools.
All Specifications
Display
| Size [Inch / cm] | 27 / 68.6 |
| Resolution | 2560 × 1440 (QHD) |
| Panel Type | 4th Gen Tandem OLED |
| Aspect Ratio | 16:9 |
| Refresh Rate (Max.) | 540 Hz QHD / 720 Hz HD Dual Mode |
| Response Time | 0.03 ms (GtG) |
| Brightness (Peak) | Up to 1500 nits (HDR) |
| Colour Gamut (Typ.) | DCI-P3 98% |
| HDR | DisplayHDR™ True Black 500 |
| ClearMR | ClearMR 21000 |
Connectivity
| DisplayPort | DP 2.1 (DSC) ×1 |
| HDMI | 2 × HDMI 2.1 |
| USB-C | 1 × USB-C (DP Alt; PD not specified) |
| USB Downstream | USB 3.x hub (KVM-ready) |
| Headphone Out | 4-pole (Sound + Mic), DTS Headphone:X |
Features
| Dual Mode | 540Hz QHD / 720Hz HD |
| AdaptiveSync | G-SYNC Compatible, FreeSync Premium Pro, VESA AdaptiveSync |
| OLED Care | Screen Move, Cleaning, Care presets |
| Gaming Tools | Dynamic Action Sync, Black Stabilizer, Crosshair, FPS Counter |
| Software | LG Switch (hotkeys/layouts), Dual Controller, Hardware Calibration ready |
| Audio | DTS Headphone:X via 4-pole jack |
Mechanical
| Stand Adjustments | Height / Tilt / Swivel / Pivot |
| VESA Mount | 100 × 100 mm |
| Design | 3-side virtually borderless; slim stand footprint |
Power
| Peak Power | TBD (external adapter) |
| Sleep / DC Off | < 0.5 W / < 0.3 W |
| AC Input | 100–240 V (50/60 Hz) |
| Adapter | External |
Dimensions / Weights
| With Stand (W×H×D) | TBD |
| Without Stand (W×H×D) | TBD |
| Shipping (W×H×D) | TBD |
| Weight (With / Without / Shipping) | TBD |
Info
| Product Name | UltraGear OLED |
| SKU | 27GX790B-B |
| Year | 2026 |
Accessory (in box)
| Cables | Likely DP / HDMI (final bundle TBD) |
| SKU | 27GX790B-B |
| Brand | LG |
| Shipping Weight | 9.0000kg |
Manufacturer Warranty
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