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LG UltraGear OLED 27GX700A vs Samsung Odyssey OLED G8 G81SF 27-inch

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

LGUltraGear OLED 27GX700ASamsungOdyssey OLED G8 G81SF 27-inch
Overview
ReleasedAugust 2025April 2025
Display
Screen size26.5″27″
Resolution2560 × 1440 (QHD)3840 × 2160 (4K)
Sharpness111 pixels per inch163 pixels per inch
PanelOLED (LG Display fourth-generation Primary RGB Tandem WOLED)QD-OLED
Refresh rate280 Hz240 Hz
Response time (grey to grey)0.03 ms0.03 ms
Brightness (typical)335 nits250 nits
HDR peak brightness1,500 nits–
HDR certificationDisplayHDR True Black 500DisplayHDR True Black 400
HDR formatsHDR10HDR10+ Gaming
Contrast ratio1,500,000:11,000,000:1
Colour range99.5% DCI-P3 (typical)99% DCI-P3 (CIE 1976)
DCI-P3 coverage99.5%99%
ShapeFlatFlat
Adaptive syncFreeSync Premium Pro, G-Sync CompatibleFreeSync Premium Pro
Colour depth1.07 billion coloursUp to 1 billion colours
Colour modesReader Mode, Colour Weakness mode; HDR Effect–
HDR detailHDR10; VESA DisplayHDR True Black 500; 1,500 nits peak at 1.5% APL (TFTCentral, from LG)DisplayHDR True Black 400 and HDR10+ Gaming
Variable refresh range–Samsung's current UK specification confirms FreeSync Premium Pro but lists G-Sync as No; its March 2025 launch releases state NVIDIA G-SYNC Compatible support for G81SF
Viewing angles178° / 178°178° horizontal and vertical
Eye care–Eye Saver Mode, Flicker Free and UL-certified Glare Free coating
Burn-in protection–OLED Safeguard+ with pulsating heat pipe cooling; burn-in from normal use is covered within warranty, excluding commercial use, abuse and misuse
Pixel pitch0.2292 × 0.2292 mm–
CalibrationFactory calibrated; hardware calibration ready (LG Calibration Studio)Factory tuning with calibration report
Connections
Video inputs2 × HDMI 2.1, DisplayPort 1.42 × HDMI 2.1, DisplayPort 1.4
USB-C chargingNoneNone
USB portsUSB-A2 × USB-A
SpeakersNoNo
HDMI detail2 × HDMI 2.1 (cable included)2 x HDMI 2.1, HDCP 2.2
DisplayPort detailDisplayPort 1.41 x DisplayPort 1.4, HDCP 2.2
USB hub detail1 × USB 3.0 upstream (USB-B), 1 × USB 3.0 downstreamOne USB-B upstream and two USB-A downstream ports; USB 3.2 Gen 1
Picture by picture–Picture in picture; no picture by picture (Stuff)
Audio out4-pole headphone out (sound and mic), DTS Headphone:XHeadphone output
Design
Stand adjustsHeight, tilt, swivel, pivotHeight, tilt, swivel, pivot
VESA mountYesYes
Weight with stand9 kg6.9 kg
Height adjustment–120 mm, ± 5 mm tolerance
Tilt–-2° to +25°
Swivel–-30° to +30°
Pivot–-92° to +92°
VESA pattern100 × 100 mm100 x 100 mm
Size with stand605.2 × 249.1 × 469.3–579.3 mm (W × D × H)611.7 x 263.5 x 554.2 mm (W x D x H)
Size without stand605.2 × 45.3 × 351.0 mm (W × D × H)611.7 x 49.2 x 353.8 mm (W x D x H)
Weight without stand4.8 kg3.8 kg
Colours–Silver with Core Lighting+
ControlsUser-defined key; auto input switch; game features include Black Stabiliser, Dynamic Action Sync, Crosshair and FPS Counter; Hexagon Lighting RGB LEDs–
Power and support
Power useLess than 0.5 W sleep, less than 0.3 W off45 W typical; 140 W maximum; 0.5 W standby; 0.3 W off
Energy class–G
Power supplyExternal adapter, 100–240 VExternal adapter; AC 100–240V
Software–Monitor OSD; no Tizen smart services
In the boxHDMI 2.1 cable, DisplayPort cable, USB A-to-B cableHDMI cable, DisplayPort cable and 1.5 m power cable

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