LG UltraGear 39GX90SA-WUK model 39GX90SA-W- Screen diagonal
- 39 inThis one: 44.5 in
UK model 45GX90SA-B
A 44.5-inch curved OLED monitor combining 3440 × 1440 at 240 Hz with webOS streaming functions. LG lists 65 W USB-C power delivery, two 7 W speakers and an 800 R curve; network services and input modes have their own requirements.

Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.
A single compatible USB-C connection carries display, data and up to 65 W device charging; the UK table lists 3440 × 1440 at 240 Hz through that port.
The adjustable-height stand and supplied remote support both desktop use and webOS navigation. LG lists a 338.6 mm stand depth for desk planning.
Streaming and cloud-gaming services need an internet connection and may need separate subscriptions or a gamepad; availability varies by country.
LG’s 1300 nit peak is stated at 1.5%APL, while 275 nits is stated at 100%APL. These are separate manufacturer claims, not independently measured full-screen HDR performance.
Exact configuration: UK model 45GX90SA-B
56 specifications in 10 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”. 1 row repeats a listed fact in the manufacturer’s own wording, kept under “Manufacturer wording”.
LG technical-table diagonal; marketing size may be rounded.
SourceNative panel pixel dimensions, not a benchmark or guarantee of frame rate.
SourceManufacturer panel designation; no independent image-quality result is inferred.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceComplete non-placeholder exact-model feature inventory. NO is explicit; placeholder omissions do not establish absence. Per-feature operating restrictions still apply; these are not independent performance results. Crosshair cannot be used while FPS Counter is active; the FPS Counter may display a number above the monitor maximum refresh.
SourceExact-model overview names MLA+. No independent luminance or quality ranking is inferred.
SourceManufacturer-listed native-resolution maximum. Actual modes depend on input, cable, source hardware and configuration.
SourceManufacturer response-time claim; retain the stated GtG/mode qualification. This is not measured latency, input lag or a cross-model motion result.
SourceExplicit positive in the exact-model table; source implementation/port details remain separately listed.
SourceRetain exact named implementation/certification and model scope; not a generic performance equivalence.
SourceRetain exact named implementation/certification and model scope; not a generic performance equivalence.
SourceThe overview’s precise 0.03ms GtG claim and the table’s Less than1ms GtG bound are both retained. Neither is measured input lag or a cross-model test.
SourceExplicit manufacturer typical brightness. Peak HDR brightness/window sizes, where stated, are separate claims; not an independent measurement. The overview explicitly labels 275nits at APL100%; peak at APL1.5% is a separate row.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications. The overview qualifies 1.5M:1 at25%APL.
SourceRetain exact colour space, percentage and CIE basis. Gamut coverage/volume is not an independent colour-accuracy result.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceExplicit positive in the exact-model table; source implementation/port details remain separately listed.
SourceRetain exact named implementation/certification and model scope; not a generic performance equivalence.
SourcePublished application availability is separate from hardware calibration support or a measured calibration result.
SourceManufacturer peak claim at APL1.5%, separate from 275cd/m² standard brightness at APL100%. No full-screen peak or independent result is inferred.
SourceExplicit positive in the exact-model table; source implementation/port details remain separately listed.
SourceExact UK manufacturer connection inventory. NO is an explicit source negative; omitted or dash entries remain unresolved. Connector shape does not prove an unlisted generation, data mode, bandwidth or charging protocol.
SourceThe exact UK model table explicitly says NO; this is not absence inferred from omission.
SourcePositive downstream USB inventory; computer data requires its actual upstream connection. Connector generation and ports remain as separately sourced in the connection inventory.
SourceStated monitor output to a compatible connected device, not monitor input power or an unconditional charging speed.
SourceExact-model overview explicitly declares HDMI2.1; source input/cable/hardware and console aspect-ratio conditions remain separate.
SourceThe exact model explicitly lists Height in its stand movement inventory. Exact travel/angle is separate; unlisted movements are not asserted absent.
SourceThe exact model explicitly lists Swivel in its stand movement inventory. Exact travel/angle is separate; unlisted movements are not asserted absent.
SourceThis exact UK table does not establish pivot availability; omission or a different movement list is not a negative. · This exact UK table does not establish pivot availability; omission or a different movement list is not a negative.
SourceManufacturer tuple and any raised/lowered positions are retained; leave cable clearance and movement room. No axis or travel is invented.
SourceExplicit W axis of the manufacturer with-stand tuple.
SourceExplicit D axis of the manufacturer with-stand tuple; allow separate cable clearance.
SourceExplicit manufacturer with-stand, packaging-excluded measurement basis.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceManufacturer claim under its labelled measurement basis; retain raw precision and qualifications.
SourceExternal adapter DC output rating. It is not typical monitor consumption and cannot establish running cost.
SourceRetain the source inequality and stated operating state; not typical active consumption.
SourceNo typical active-consumption figure is established here. Adapter output, on-mode compliance and sleep limits are not substituted. · No typical active-consumption figure is established here. Adapter output, on-mode compliance and sleep limits are not substituted.
SourceThe same facts in the manufacturer’s combined or original wording, each with its source.
Retain the source inequality and stated operating state; not typical active consumption.
SourceThe exact UK model table explicitly says NO; this is not absence inferred from omission.
SourceExact-model source does not establish this capability; dash or omission remains unknown, not a negative. · Exact-model source does not establish this capability; dash or omission remains unknown, not a negative.
SourceManufacturer relative support-period statement with its launch-date reference. No absolute end date is inferred or refreshed.
SourceExact-model operating system declaration. App availability, subscriptions, network requirements and country restrictions stay separate; no unlisted version or absolute update end date is inferred.
SourceThese are manufacturer-listed processing functions. Their names do not establish measured quality, latency or native physical speaker channels.
SourceThe exact-model overview expressly states LG WOLED is UL-verified Flicker-Free (certificate A196009), with user-environment/condition qualification. This positive is separate from the table’s LG Flicker Safe feature NO; neither overrides the other.
SourceActual operating restrictions are preserved for the positive smart-function claims. Streaming/cloud services and subscriptions are not bundled by this record.
SourceExact UK source inventory and explicit negatives preserved. Country-dependent power cord/bundle remains qualified; unlisted accessories are not asserted absent.
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