LG UltraGear evo GX9 39GX950B-B / Samsung Odyssey OLED G6 G60SF (27-inch)

LG UltraGear evo GX9 39GX950B-B: 39GX950B-B · 38.86-inch · 5K2K · black

Samsung Odyssey OLED G6 G60SF (27-inch): LS27FG602SUXXU · 27-inch QD-OLED, 2560 × 1440, 500 Hz

SpecificationLG UltraGear evo GX9 39GX950B-BSamsung Odyssey OLED G6 G60SF (27-inch)
Release year20262025
Display38.86-inch OLED · 5120 × 2160 · 21:9 LG—
Curvature1500R LG—
Pixel pitch0.1776 × 0.1776 mm LG—
Refresh rate165 Hz (5120 × 2160) LGUp to 500 Hz

Samsung notes the maximum may vary by input source; reaching 500 Hz requires a source that can output it.

Samsung
Dual-Mode330 Hz at 2560 × 1080 in the 21:9 modes; 330 Hz at 1920 × 1080 in the 16:9 modes

The product page calls this mode QHD in one place and WFHD in another; the resolutions in the manual were used. Exit the game before changing the mode.

LG		—
Pixel response0.03 ms GtG

Not total input lag.

LG		—
Brightness335 nits typical; 300 nits minimum LG300 nits (typical)

The typical figure is for full-screen SDR; small bright areas go higher in HDR.

Samsung
Peak HDR brightness1500 nits

Peak figure LG states under internal test conditions; not sustained full-screen brightness.

LG		—
HDR formatsHDR10; VESA DisplayHDR True Black 500; no Dolby Vision LG—
Colour coverageDCI-P3 99.5% typical, 94% minimum (CIE1976); 1.07 billion colours LG—
Contrast ratio1,850,000:1 typical; 1,480,000:1 minimum

Manufacturer figure.

LG		—
SurfaceAnti-glare, low-reflection front polarizer LGGlare Free anti-reflective film Samsung
CalibrationFactory calibrated; hardware-calibration ready (LG Calibration Studio) LG—
Variable refreshG-SYNC Compatible; FreeSync Premium Pro LGAMD FreeSync Premium Pro · NVIDIA G-Sync Compatible

Matches the monitor's refresh rate to the graphics card's frame rate to prevent tearing.

Samsung
DisplayPort1 × DisplayPort 2.1; UHBR20

The graphics card and cable must support this rate.

LG		—
HDMI2 × HDMI 2.1

The menu has 2.1(PC) and 2.1(AV) compatibility options. The product page connectivity table omits the HDMI count; the two inputs in the manual were used.

LG		—
USB-C input1 × USB-C; video, data and up to 90 W power

The manual lists DP Alternate Mode and Power Delivery. The port does not power the monitor; the adapter is required.

LG		—
USB hubUSB-C upstream; 2 × downstream USB 3.2 Gen 2

The manual says the downstream ports run at USB 2.0 over a USB-C to USB-C cable and USB 3.0 over a USB-C to USB-A cable.

LG		—
Multiple sources2 × PBP and PIP; no built-in KVM LG—
Audio2 × 7 W speakers; 4-pole headphone output; AI Sound LG—
StandTilt −8° / +15°; ±30° swivel; 110 mm height adjustment

The manual does not describe pivot rotation.

LG		120 mm height adjustment · tilt −2° / 25° · swivel ±30° · pivot ±92° · VESA 100 × 100 Samsung
Wall mount100 × 100 mm; 4 × M4 × L10 screws; optional LSW149 plate LG—
Dimensions921.4 × 605.4 × 322.8 mm with stand (up); 921.4 × 495.4 × 322.8 mm (down); 921.4 × 405.0 × 118.7 mm without stand

Width × height × depth.

LG		—
Weight10.7 kg with stand; 6.8 kg without LG—
PowerExternal adapter; 40.3 W on-mode in SDR, 45.9 W in HDR

On-mode power demand from the product information sheet.

LG		140 W maximum · 41.4 W typical · external adapter Samsung
OLED careScreen saver; Image Cleaning of about 10 minutes

The manual states that prolonged use can cause permanent brightness reduction and image retention.

LG		—
LightingUnity Hexagon Lighting 2.0 on the back LG—
Warranty2 years; OLED panel included LG—
Panel—27-inch QD-OLED · 2560 × 1440 (QHD), 16:9

QD-OLED puts a quantum-dot colour converter over a blue-emitting OLED layer; each pixel produces its own light.

Samsung
Response time—0.03 ms (GtG)

GtG is the time a pixel takes to change from one grey level to another; lower values mean less smearing in motion.

Samsung
HDR—DisplayHDR True Black 500 · HDR10+ Gaming · 1000 nits typical, 800 nits minimum at 3% window (peak brightness set to High)

A 3% window means only a small part of the screen is lit; brightness drops below this in large bright scenes.

Samsung
Colour—99% DCI-P3 · 1 billion colours

DCI-P3 is the wide colour space used for cinema and HDR content.

Samsung
Connectivity—1 × DisplayPort 1.4 · 2 × HDMI 2.1 · 1 × USB-B upstream · 2 × USB-A 3.2 Gen 1 · headphone out

There is no USB-C input and no built-in speaker.

Samsung
OLED protection—OLED Safeguard+: pulsating heat pipe, thermal modulation, logo and taskbar detection, screen saver

These features are meant to reduce the risk of static images leaving burn-in on the OLED panel.

Samsung
Size and weight—With stand 611.7 × 554.2 × 263.5 mm, 6.9 kg · without stand 611.7 × 353.8 × 49.2 mm, 3.8 kg Samsung