Dell UltraSharp U2725QE / LG UltraGear 45GX950A-B

Dell UltraSharp U2725QE: U2725QE · 27-inch

LG UltraGear 45GX950A-B: 45GX950A-B: 44.5-inch 800R curved 5K2K (5120 × 2160) OLED, 165 Hz / Dual-Mode 330 Hz. The same-size 45GX950B (UltraGear evo) and the WQHD 45GX90SB-B are separate.

SpecificationDell UltraSharp U2725QELG UltraGear 45GX950A-B
Release year20252025
Display27-inch IPS Black; 3840 × 2160; 163 ppi; anti-glare surface Dell—
Refresh rate120 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		—
Brightness450 nits typical; 600 nits peak; HDR 600 Dell—
Rated contrast3000:1 native contrast

IPS Black targets darker blacks than conventional IPS; it does not give per-pixel black like OLED or local-dimming displays.

Dell		—
Colour1.07 billion colours; 100% sRGB and Rec.709; 99% DCI-P3 and Display P3; factory calibration average ΔE < 1.5 Dell—
Response time5 ms GtG (fast mode); 8 ms GtG

Pixel transition specification, not total input lag.

Dell		—
Thunderbolt 41 × 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 inputs1 × HDMI 2.1 (4K 120 Hz, VRR); 1 × DisplayPort 1.4 in (DSC, HDCP 2.2); 1 × DisplayPort out Dell—
USB hubThunderbolt 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 deliveryUp to 140 W EPR

Requires a compatible computer and cable.

Dell		—
Ethernet2.5 GbE Dell—
Audio3.5 mm analogue line-out; no built-in speakers Dell10 W × 2 stereo speakers, DTS Headphone:X LG
Multiple sourcesBuilt-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 sensorComfortView 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		—
Stand150 mm height; −5°/+21° tilt; ±45° swivel; ±90° pivot Dell—
VESA100 × 100 mm Dell—
Panel without stand612.44 × 353.51 × 55.60 mm; 5.22 kg Dell—
Weight with stand7.06 kg (with stand and cables) Dell—
Power consumption25.4 W operating; 325 W maximum; 0.5 W standby; 0.3 W off Dell—
In the boxPower cable; 1.8 m DisplayPort 1.4; 1 m USB-A to USB-C; 1 m passive Thunderbolt 4 cable Dell—
Warranty3-year limited hardware warranty; Advanced Exchange

Terms from the UK model page; may vary by country.

Dell		—
FirmwareM2T102 (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		—
Panel—44.5-inch WOLED, 21:9, 800R curve; 5120 × 2160 (5K2K), 0.2035 mm pixel pitch (about 125 ppi); MLA+

800R means the screen curves along a circle with an 80 cm radius, so the edges sit closer to the eyes. MLA+ (micro lens array) directs OLED pixel light forward to raise brightness.

LG
Refresh rate and response—165 Hz at 5K2K; 330 Hz at WFHD with VESA-certified Dual-Mode; 0.03 ms (GtG)

Dual-Mode doubles the refresh rate by lowering the resolution: 330 Hz for fast competitive games, 5K2K at 165 Hz for detailed games.

LG
Brightness and HDR—275 cd/m² typical (minimum 250); HDR10, VESA DisplayHDR True Black 400; DCI-P3 98.5%; 10-bit; contrast 1,500,000:1 (typical)

DisplayHDR True Black 400 is VESA’s certification for screens that can turn black fully off, such as OLED, and requires 400 nits peak brightness.

LG
Sync—NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro, VRR

Variable refresh rate matches the monitor to the graphics card’s frame rate, reducing tearing and stutter.

LG
Inputs—2 × HDMI, 1 × DisplayPort 2.1 (DSC), 1 × USB-C (5120 × 2160 at 165 Hz, data, 90 W power); 2 × USB 3.0 downstream; 4-pole headphone/mic

DSC compresses the image visually losslessly so high resolution and refresh rate fit through one cable. USB-C gives a laptop video, data and 90 W charging over one cable. LG notes NVIDIA released a driver in April 2025 that fixed screen blackouts seen over DisplayPort.

LG
PiP and PbP—PIP and 2-source PBP

PiP shows one source in a small window, and PbP splits the screen to show two sources side by side, for example a computer and a game console at once.

LG
Stand and mounting—Tilt, height and swivel adjustment; 100 × 100 mm VESA mounting LG
Power—External adapter (20 V / 18 A); under 0.5 W in sleep LG
Size and weight—With stand 991.6 × 545.6–665.6 × 342 mm, 14 kg; without stand 991.6 × 460.7 × 225.5 mm, 9.4 kg LG