LG UltraGear 45GX90SA-BUK model 45GX90SA-B- Screen diagonal
- 44.5 inThis one: 39 in
UK model 39GX90SA-W
A 39-inch OLED monitor with a 3440 × 1440 panel and a listed 240 Hz native-resolution maximum. The UK specification lists a 322.8 mm depth with the supplied stand.

Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.
LG lists 3440 × 1440 at up to 240 Hz at native resolution. Match the source device, cable and input mode to the stated requirements.
The published with-stand dimensions make it possible to plan desk space without substituting bare-panel measurements.
Refresh, response-time, HDR and colour specifications are manufacturer claims; they do not establish independently measured image quality, input lag or game performance.
Allow room for the listed 322.8 mm stand depth and cable movement. UK documentation does not establish an identical US bundle or a cross-border warranty.
Exact configuration: UK model 39GX90SA-W
50 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.
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 advertises 0.03 ms while the table states Less than 1 ms GtG; retain the precise claim and broad bound separately, not as independently measured latency.
SourceExplicit manufacturer typical brightness. Peak HDR brightness/window sizes, where stated, are separate claims; not an independent measurement.
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.
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.
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.
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 table says Flicker Safe:NO, which names an LG feature. This does not establish the absence of every flicker-free operating condition or an independent panel-waveform result. · Named LG Flicker Safe availability is retained separately; generic panel flicker behaviour remains unresolved.
SourceExplicit positive in the exact-model table; source implementation/port details remain separately listed.
SourceLG expressly names webOS for this exact smart monitor. No unstated webOS version, app availability, update end date or regional service equivalence is inferred.
SourceExact-model table explicitly lists Flicker Safe:NO. This is the named LG feature declaration, not a measurement of flicker across every operating mode.
SourceExact UK source inventory and explicit negatives preserved. Country-dependent power cord/bundle remains qualified; unlisted accessories are not asserted absent.
SourceMore of the nearest checked monitors by key specifications, for a side-by-side comparison.
LG 39GX90SB-WUK manufacturer model · 39GX90SB-WCompare the two
LG 39GS95QE-BUK manufacturer model · 39GS95QE-BCompare the two
LG 39GS95QE-WUK manufacturer model · 39GS95QE-WCompare the two
LG 39GX900A-BUK manufacturer model · 39GX900A-BCompare the two
LG 45GX900A-BUK manufacturer model · 45GX900A-BCompare the two
LG 34GX90SA-WUK manufacturer model · 34GX90SA-WCompare the two
LG 34GX90SB-WUK manufacturer model · 34GX90SB-WCompare the two
LG UltraGear 34GS95QE-BUK model 34GS95QE-BCompare the two