UK manufacturer model · 40U990A-W
LG 40U990A-W in its manufacturer-documented UK configuration. The complete source table retains its published display, connection, software and physical conditions.
Specifications checked 17 Oct 2026.
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UK manufacturer model · 45GX950B-B
LG 45GX950B-B in its manufacturer-documented UK configuration. The complete source table retains its published display, connection, software and physical conditions.
Specifications checked 17 Oct 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
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Differences first. Select a topic for its graphic, sources and conditions.
Check the exact configuration and source conditions for your use.
Match the monitor to the connection. Refresh limits depend on the input, cable and source device. Confirm the exact regional ports, stand adjustment and mount. Manufacturer response-time methods such as MPRT and GtG are different; neither the image nor these figures establish an independent motion or colour-quality test.
27 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.
Check the exact configuration and source conditions for your use.
Manufacturer specification · Manufacturer display-table maximum, not a motion index. Input-specific modes/overclocking remain in original source fields. Original: 120
LG 40U990A-W — official UK product specificationsManufacturer specification · Manufacturer display-table maximum, not a motion index. Input-specific modes/overclocking remain in original source fields. Original: 165
LG 45GX950B-B — official UK product specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Actual manufacturer display-table diagonal. Original: 39.7
LG 40U990A-W — official UK product specificationsManufacturer specification · Actual manufacturer display-table diagonal. Original: 44.5
LG 45GX950B-B — official UK product specificationsCheck the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
A size or weight trade-off; it does not establish the better product.
A size or weight trade-off; it does not establish the better product.
A size or weight trade-off; it does not establish the better product.
A size or weight trade-off; it does not establish the better product.
A size or weight trade-off; it does not establish the better product.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Stated colour bit depth, which can include dithering (FRC). It does not establish measured colour accuracy or smoother gradients.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Check the exact configuration and source conditions for your use.
Manufacturer specification · Original manufacturer axes, units and up/down/stand configurations retained.
LG 40U990A-W — official UK product specificationsManufacturer specification · Original manufacturer axes, units and up/down/stand configurations retained.
LG 45GX950B-B — official UK product specificationsA size or weight trade-off; it does not establish the better product.
One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.
One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
22 shared fields have the same recorded value.
| Specification | LG 40U990A-W | LG 45GX950B-B |
|---|---|---|
Screen diagonalDifferent SourcesLG 40U990A-W Manufacturer specification · Actual manufacturer display-table diagonal. Original: 39.7 LG 40U990A-W — official UK product specificationsLG 45GX950B-B Manufacturer specification · Actual manufacturer display-table diagonal. Original: 44.5 LG 45GX950B-B — official UK product specifications | 39.7 in | 44.5 in |
Native resolution Sources | 5120 x 2160 | 5120 x 2160 |
Panel technologyDifferent Sources | IPS Black | OLED |
DISPLAY — Size [cm]Different Sources | 100.86cm | 113 |
DISPLAY — Aspect Ratio Sources | 21:9 | 21:9 |
DISPLAY — Pixel Pitch [mm]Different Sources | 0.1815 x 0.1815 | 0.2035 mm × 0.2035 mm |
DISPLAY — Brightness (Min.) [cd/m²]Different Sources | 360 cd/m² | 250cd/m² |
DISPLAY — Brightness (Typ.) [cd/m²]Different Sources | 450 cd/m² | 275cd/m² |
DISPLAY — Color Gamut (Min.)Different Sources | DCI-P3 95% (CIE1976) | DCI-P3 94.0% (CIE1976) |
DISPLAY — Color Gamut (Typ.)Different Sources | DCI-P3 99% (CIE1976) | DCI-P3 98.5% (CIE1976) |
DISPLAY — Color Depth (Number of Colors)Different Sources | 1.06B | 1.07B |
DISPLAY — Contrast Ratio (Min.)Different Sources | 1400:1 | 1200000:1 |
DISPLAY — Contrast Ratio (Typ.)Different Sources | 2000:1 | 1500000:1 |
DISPLAY — Viewing Angle (CR≥10) Sources | 178º(R/L), 178º(U/D) | 178º(R/L), 178º(U/D) |
DISPLAY — CurvatureDifferent Sources | 2500R | 800R |
FEATURES — HDR 10 Sources | YES | YES |
FEATURES — VESA DisplayHDR™Different Sources | DisplayHDR™600 | DisplayHDR™400 TRUE BLACK |
FEATURES — HDR Effect Sources | YES | YES |
FEATURES — Nano IPS™ Technology SourcesLG 45GX950B-B No source recorded. | YES | Not provided |
FEATURES — Color Calibrated in Factory Sources | YES | YES |
FEATURES — HW Calibration Sources | HW Calibration Ready | HW Calibration Ready |
FEATURES — Auto Brightness SourcesLG 45GX950B-B No source recorded. | YES | Not provided |
FEATURES — Super Resolution+ SourcesLG 45GX950B-B No source recorded. | YES | Not provided |
FEATURES — Black Stabiliser Sources | YES | YES |
SW APPLICATION — LG Calibration Studio (True Color Pro) Sources | YES | YES |
DISPLAY — PPI (Pixel Per Inch) SourcesLG 40U990A-W No source recorded. | Not provided | 124.8 |
FEATURES — Color Weakness SourcesLG 40U990A-W No source recorded. | Not provided | YES |
FEATURES — Live Color Low Blue Light SourcesLG 40U990A-W No source recorded. | Not provided | YES |
Manufacturer maximum refresh rateDifferent SourcesLG 40U990A-W Manufacturer specification · Manufacturer display-table maximum, not a motion index. Input-specific modes/overclocking remain in original source fields. Original: 120 LG 40U990A-W — official UK product specificationsLG 45GX950B-B Manufacturer specification · Manufacturer display-table maximum, not a motion index. Input-specific modes/overclocking remain in original source fields. Original: 165 LG 45GX950B-B — official UK product specifications | 120 Hz | 165 Hz |
DISPLAY — Response TimeDifferent Sources | 5ms (GtG at Faster) | 0.03ms (GTG) |
FEATURES — AMD FreeSync™Different Sources | FreeSync Premium | FreeSync Premium Pro |
FEATURES — VRR Sources | YES | YES |
FEATURES — Dynamic Action Sync Sources | YES | YES |
FEATURES — NVIDIA G-Sync™ SourcesLG 40U990A-W No source recorded. | Not provided | G-SYNC Compatible |
Inputs and connectionsDifferent Sources | hdmi: YES(2ea); displayport: YES(1ea); dp version: 2.1 (UHBR 13.5); thunderbolt: YES(In 1ea / Out 1ea); usb-c: YES (1Up / 4Down); usb-c (data transsmission): YES; daisy chain: YES(UHD/120Hz); usb upstream port: YES(via Thunderbolt & USB-C 10Gbps); usb downstream port: USB-C *4EA(15W*1EA, 4.5W*3EA) 10Gbps USB-A *2EA 10Gbps; built-in kvm: YES; lan (rj-45): YES; headphone output: 4-pole (Mic + Sound) | hdmi: YES(2ea); displayport: YES(1ea); dp version: 2.1 (DSC); usb-c: YES(1ea); usb-c (data transsmission): YES; usb-c (power delivery): 90W; usb upstream port: YES(via USB-C); usb downstream port: YES(2ea/ver3.0); headphone output: 4-pole (Sound+Mic); hdmi (hdcp version): 2.3; dp (hdcp version): 2.3 |
FEATURES — Auto Input Switch Sources | YES | YES |
FEATURES — PBPDifferent Sources | YES (2PBP) | 2PBP |
FEATURES — PIP Sources | YES | YES |
SOUND — SpeakerDifferent Sources | 10W x 2 | 7W x 2 |
SOUND — Rich Bass SourcesLG 45GX950B-B No source recorded. | YES | Not provided |
Manufacturer dimensions and stand basisDifferent SourcesLG 40U990A-W Manufacturer specification · Original manufacturer axes, units and up/down/stand configurations retained. LG 40U990A-W — official UK product specificationsLG 45GX950B-B Manufacturer specification · Original manufacturer axes, units and up/down/stand configurations retained. LG 45GX950B-B — official UK product specifications | dimension with stand (w x h x d) [mm]: 947.7 * 614.3 * 260 mm | dimension with stand (w x h x d) [mm]: 991.6 x 665.6 x 342mm (UP) 991.6 x 545.6 x 342mm (Down) |
MECHANICAL — Display Position Adjustments Sources | Tilt/Height/Swivel | Tilt/Height/Swivel |
MECHANICAL — Wall Mountable [mm] Sources | 100 x 100 mm | 100 x 100mm |
DIMENSIONS/WEIGHTS — Dimension without Stand (W x H x D) [mm]Different Sources | 947.7 * 419.8 * 106.3 mm | 991.6 x 460.7 x 225.5mm |
DIMENSIONS/WEIGHTS — Dimension in Shiping (W x H x D) [mm]Different Sources | 1206 * 534 * 201 | 1142 x 301 x 564mm |
DIMENSIONS/WEIGHTS — Weight with Stand [kg]Different Sources | 14.1 kg | 14kg |
DIMENSIONS/WEIGHTS — Weight without Stand [kg]Different Sources | 9.2 kg | 9.4kg |
DIMENSIONS/WEIGHTS — Weight in Shipping [kg]Different Sources | 17.8 kg | 20.5kg |
FEATURES — VESA Adaptive Sync SourcesLG 40U990A-W No source recorded. | Not provided | YES |
FEATURES — VESA Dual-Mode SourcesLG 40U990A-W No source recorded. | Not provided | WUHD 165Hz / WFHD 330Hz |
FEATURES — Smart Energy Saving Sources | YES | YES |
POWER — TypeDifferent Sources | Built-in Power | External Power(Adapter) |
POWER — AC Input Sources | 100~240V (50/60Hz) | 100~240V (50/60Hz) |
POWER — Power Consumption (Sleep Mode)Different Sources | Less than 1.2W | Less than 0.5W |
POWER — Power Consumption (DC Off) Sources | Less than 0.3W | Less than 0.3W |
POWER — Power Consumption (On-Mode) (ErP) SourcesLG 40U990A-W No source recorded. | Not provided | 47W |
POWER — Power Consumption (On-Mode) SourcesLG 40U990A-W No source recorded. | Not provided | 68.33W |
FEATURES — Flicker Safe SourcesLG 45GX950B-B No source recorded. | YES | Not provided |
FEATURES — Reader Mode Sources | YES | YES |
FEATURES — User Defined Key Sources | YES | YES |
SW APPLICATION — Dual Controller Sources | YES | YES |
FEATURES — Crosshair SourcesLG 40U990A-W No source recorded. | Not provided | YES |
FEATURES — FPS Counter SourcesLG 40U990A-W No source recorded. | Not provided | YES |
FEATURES — RGB LED Lighting SourcesLG 40U990A-W No source recorded. | Not provided | Unity Hexagon Lighting |
SW APPLICATION — LG Switch SourcesLG 40U990A-W No source recorded. | Not provided | YES |
INFO — Product name SourcesLG 45GX950B-B No source recorded. | UltraWide | Not provided |
INFO — Year SourcesLG 45GX950B-B No source recorded. | Y25 | Not provided |
ACCESSORY — HDMI Sources | YES | YES (ver 2.1) |
ACCESSORY — Display Port Sources | YES(2.1) | YES (ver 2.1) |
ACCESSORY — Thunderbolt SourcesLG 45GX950B-B No source recorded. | YES | Not provided |
ACCESSORY — USB-C Sources | YES | YES |
Closest monitors to this pair by shared key specifications. Not a popularity ranking.
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.
