Dell UltraSharp U2725QE / LG UltraGear 27GX790A-B

Dell UltraSharp U2725QE: U2725QE · 27-inch

LG UltraGear 27GX790A-B: 27-inch class (26.5-inch) QHD 480 Hz OLED

Specification	Dell UltraSharp U2725QE	LG UltraGear 27GX790A-B
Release year	2025	2025
Display	27-inch IPS Black; 3840 × 2160; 163 ppi; anti-glare surface Dell	—
Refresh rate	120 Hz; 48–120 Hz variable refresh Variable refresh works over HDMI 2.1; dynamic refresh rate (DRR) over DisplayPort is also listed for Windows. Dell	480 Hz 480 Hz means up to 480 frames per second; seeing that benefit requires the game and GPU to deliver close to 480 fps. LG
Brightness	450 nits typical; 600 nits peak; HDR 600 Dell	Typical 275 cd/m² (min 250); HDR peak at 1.5% APL typical 1,300 cd/m² (min 1,040) 1,300 nits applies only to small highlights covering 1.5% of the screen; on a full white screen OLED automatic brightness limiting kicks in. LG
Rated contrast	3000:1 native contrast IPS Black targets darker blacks than conventional IPS; it does not give per-pixel black like OLED or local-dimming displays. Dell	—
Colour	1.07 billion colours; 100% sRGB and Rec.709; 99% DCI-P3 and Display P3; factory calibration average ΔE < 1.5 Dell	DCI-P3 98.5% (CIE 1976); 10-bit (1.07 billion colours) The sheet lists a paper calibration report in the box. LG
Response time	5 ms GtG (fast mode); 8 ms GtG Pixel transition specification, not total input lag. Dell	0.03 ms (GtG) Grey-to-grey pixel transition time; it is not input lag. LG
Thunderbolt 4	1 × upstream: video (DP 1.4, DSC), data and 140 W EPR charging; 1 × downstream: daisy chain, 15 W Two 4K monitors can run from one computer through a Thunderbolt 4 daisy chain. Dell	—
Video inputs	1 × HDMI 2.1 (4K 120 Hz, VRR); 1 × DisplayPort 1.4 in (DSC, HDCP 2.2); 1 × DisplayPort out Dell	—
USB hub	Thunderbolt 4 or USB-C upstream (10 Gbit/s); 2 × USB-C (10 Gbit/s, 15 W); 4 × USB-A (10 Gbit/s, one with BC 1.2 charging) Dell	—
Power delivery	Up to 140 W EPR Requires a compatible computer and cable. Dell	—
Ethernet	2.5 GbE Dell	—
Audio	3.5 mm analogue line-out; no built-in speakers Dell	—
Multiple sources	Built-in KVM; PiP and PbP KVM switches one keyboard and mouse between two computers; PiP/PbP show two sources at once. Dell	—
Eye comfort and sensor	ComfortView Plus (blue light ≤ 35%); TÜV 5-star eye comfort; ambient light sensor The sensor can adjust brightness and colour temperature automatically; see owner experiences for firmware-related issues. Dell	—
Stand	150 mm height; −5°/+21° tilt; ±45° swivel; ±90° pivot Dell	Tilt -5°/15°; swivel -30°/30°; height 110 mm; clockwise pivot; VESA 100 × 100 It has a tool-free 1Click stand mount and hexagonal RGB lighting on the back. LG
VESA	100 × 100 mm Dell	—
Panel without stand	612.44 × 353.51 × 55.60 mm; 5.22 kg Dell	—
Weight with stand	7.06 kg (with stand and cables) Dell	—
Power consumption	25.4 W operating; 325 W maximum; 0.5 W standby; 0.3 W off Dell	—
In the box	Power cable; 1.8 m DisplayPort 1.4; 1 m USB-A to USB-C; 1 m passive Thunderbolt 4 cable Dell	Power cord, DisplayPort 2.1 cable, HDMI 2.1 cable, USB A-to-B cable, paper calibration report LG
Warranty	3-year limited hardware warranty; Advanced Exchange Terms from the UK model page; may vary by country. Dell	—
Firmware	M2T102 (A01, 19 August 2025) Dell says it targets wake-from-sleep, USB dropping to 480 Mbit/s on MacBooks, auto brightness/colour temperature sensing and daisy-chained displays not waking. Dell	—
Model	—	27GX790A-B (US version 27GX790A-B.AUS) LG’s US spec sheet carries a 2024 copyright; LG Brazil lists the model as a 2025 product. LG
Panel	—	26.5-inch (27-inch class) OLED, 16:9 The actual viewable diagonal is 26.5 inches. LG
Resolution and pixel pitch	—	2560 × 1440 (QHD); 0.2292 mm pixel pitch QHD at 27 inches means lower pixel density than 4K; small text looks less crisp but high frame rates are easier to reach on the GPU. LG
Contrast	—	1,500,000:1 (typical) OLED pixels can switch fully off, so black level is near zero; LG’s page notes the figure is measured at 25% APL. LG
HDR	—	HDR10; VESA DisplayHDR True Black 400 True Black is the VESA HDR tier for very low black-level displays such as OLED. LG
Variable refresh	—	VESA AdaptiveSync; NVIDIA G-SYNC Compatible; AMD FreeSync Premium Pro Variable refresh matches the panel to the GPU frame rate to reduce tearing and stutter. LG’s page also lists VESA ClearMR 21000 certification. LG
Screen surface	—	Anti-glare, low-reflection front polariser LG
Inputs	—	2× HDMI (HDMI 2.1 FRL compliant); 1× DisplayPort 2.1 FRL is the high-bandwidth transfer mode of HDMI 2.1. There is no USB-C video input. LG
USB and audio	—	USB 3.0: 1 upstream, 2 downstream; 4-pole headphone out (sound + mic); DTS Headphone:X No built-in speakers are listed. LG
Power	—	External adapter, 100–240 V; under 0.5 W in sleep, under 0.3 W off The sheet does not list typical power consumption. LG
Burn-in care	—	OLED Care LG says the feature helps prevent burn-in from static high-contrast images left on screen for long periods but may not prevent all image retention. LG
Size and weight	—	With stand 23.8 × 22.8 × 9.8 in (raised), 20.5 lb; without stand 23.8 × 13.8 × 1.8 in, 11.2 lb About 9.3 kg with stand, about 5.1 kg without. LG