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IN (shopping country)
LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD
LG · Monitor

LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD

27 inch · 2560 x 1440 · 540 Hz · OLED

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  • Screen size 27 inch
  • Resolution 2560 x 1440
  • Refresh rate 540 Hz
  • Panel OLED
  • Response time 0.02 ms

LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD is a 27-inch monitor with 2560 x 1440 resolution, a 540 Hz refresh rate and OLED panel. The high refresh rate makes fast games look smoother. It came out in 2026.

Released
2026-02-23

Specifications

Key specs

Screen size
27 inch
Resolution
2560 x 1440
Refresh rate
540 Hz
Panel
OLED
Response time
0.02 ms
Released
2026-02-23
Part number
27GX790B-B
EAN / UPC
0195174137055

Display

Display diagonal
68.6 cm (27")
Display resolution
2560 x 1440 pixels
HD type
Quad HD
Native aspect ratio
16:9
Display technology
OLED
Panel type
OLED
Display brightness (typical)
335 cd/m²
Response time
0.02 ms
Response time measurement type
GTG (Gray to Gray)
Screen shape
Flat
Contrast ratio (typical)
1500000:1
Maximum refresh rate
540 Hz
Viewing angle, horizontal
178°
Viewing angle, vertical
178°
Display number of colours
1.07 billion colours
Pixel pitch
0.2292 x 0.2292 mm
Display diagonal (metric)
67 cm
High Dynamic Range (HDR) supported
Yes
High Dynamic Range (HDR) technology
High Dynamic Range 10 (HDR10), DisplayHDR True Black 500
Colour gamut standard
DCI-P3

Performance

NVIDIA G-SYNC
Yes
NVIDIA G-SYNC type
G-SYNC Compatible
AMD FreeSync
Yes
AMD FreeSync type
FreeSync Premium Pro
View all specifications +6 more sectionsShow fewer specifications

Design

Market positioning
Gaming
Product colour
Black

Ports & interfaces

Built-in USB hub
Yes
USB upstream port type
USB Type-C
Number of downstream ports
1
HDMI
Yes
HDMI ports quantity
2
DisplayPorts quantity
1
DisplayPort version
2.1
Headphone out
Yes

Ergonomics

VESA mounting
Yes
Panel mounting interface
100 x 100 mm
Height adjustment
Yes
Pivot
Yes
Swivelling
Yes
Tilt adjustment
Yes

Power

Energy efficiency class (SDR)
F
Energy efficiency class (HDR)
G
Energy consumption (SDR) per 1000 hours
25 kWh
Energy consumption (HDR) per 1000 hours
29 kWh
Power consumption (standby)
0.5 W
Power consumption (off)
0.3 W
AC input voltage
100 - 240 V
AC input frequency
50/60 Hz
Power supply type
External
Energy efficiency scale
A to G

Weight & dimensions

Width (with stand)
605.2 mm
Depth (with stand)
220 mm
Height (with stand)
527.6 mm
Weight (with stand)
6.8 kg
Width (without stand)
605.2 mm
Depth (without stand)
51.2 mm
Height (without stand)
351 mm
Weight (without stand)
4.3 kg

Other features

FPS counter
Yes

Check the manufacturer's page before buying.

Ready to buy? Get the LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD at today's price.Buy now on Amazon

About this product

LG's Brightest* 4th Gen OLED Introducing LG’s gaming monitor powered by 4th Gen OLED with revolutionary Primary RGB Tandem technology—reaching up to 1500 nits of peak brightness for visibly clearer gameplay, helping you to see on-screen visuals with clarity even in bright environments. In fast-paced or sunlit in-game scenes, enhanced APL and reduced ABL help maintain consistent luminance without dimming critical visuals. UL Verified Perfect Black, colour and VESA DisplayHDR™ True Black 500, this next-gen OLED delivers the contrast and clarity gamers need to react faster, see more, and stay immersed in every frame. Next-Gen OLED Brilliance Powered by 4th Gen Primary RGB Tandem OLED, the 27GX790B delivers brighter visuals with less power than the previous 3rd Gen OLEDs—reaching up to 1500 nits of peak brightness. Its advanced 4-stack RGB structure produces deeper contrast, sharper detail, and stunning colour precision. Experience clearer shadows, deep immersion, and visual consistency in every frame—built for serious gaming.

27” LG UltraGear™ OLED Gaming Monitor, Dual Mode (720Hz@HD, 540Hz@QHD), DP2.1, Black vs similar monitors

LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HDASUS ROG Swift OLED PG27AQWP-G EDITION 20Samsung LS27FG602SNXZA 27″ 500Hz MonitorLG 27GR95QE-B 27″ 240Hz Monitor
Screen size27 inch27 inch27 inch27 inch
Resolution2560 x 14402560 x 14402560 x 14402560 x 1440
Refresh rate540 Hz540 Hz500 Hz240 Hz
PanelOLEDWOLEDOLEDOLED
Response time0.02 ms0.02 ms0.03 ms0.03 ms
Released2026202620262026

Monitor arms that fit a 27-inch size

Check the monitor has VESA mounting holes and that its weight is under the arm's limit.

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Questions about the 27” LG UltraGear™ OLED Gaming Monitor, Dual Mode (720Hz@HD, 540Hz@QHD), DP2.1, Black

What are the main specs of the LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD?

27 inch, 2560 x 1440, 540 Hz, OLED.

What screen size is the LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD?

27 inch.

What resolution is the LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD?

2560 x 1440.

What is the refresh rate of the LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD?

540 Hz.

When did the LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HD come out?

It was released in 2026/02 (LG).

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LG 27” LG UltraGear OLED Gaming Monitor, Dual Mode (720Hz@HDBuy now on Amazon