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Samsung Odyssey OLED G9 G91SD 49-inch

49-inch QD-OLED · UK specification · Samsung part LS49DG912SUXXU

Screen diagonal class
49 in
Native resolution
5120 × 1440
Manufacturer maximum refresh rate
144 Hz

A 49-inch QD-OLED monitor with 5120 × 1440 resolution and a manufacturer-listed 144 Hz maximum. The exact UK model includes a height-adjustable stand and keeps its input, motion and HDR conditions alongside the figures.

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THE ACTUAL PRODUCT
Samsung Odyssey OLED G9 G91SD 49-inch exact official display and stand gallery view
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
Compare with MSI MPG 491CQPX QD-OLED

Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.

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The nearest checked monitors by key specifications, with what differs from the Samsung Odyssey OLED G9 G91SD 49-inch. The first matches the Compare button above.

The useful part.

Key strengths

The 32:9 screen has the manufacturer-listed 5120 × 1440 resolution and 144 Hz maximum.

The supplied stand provides sourced height adjustment, and the VESA pattern offers another mounting option when weight and screw requirements are met.

The checks that matter.

Before you buy

Refresh, response, HDR and colour figures are conditional manufacturer claims; source performance and settings affect results.

Samsung explicitly lists no built-in speakers. Allow extra desk space beyond the stated stand depth for cables.

Generic USB-C/USB Hub No declarations conflict with the separately listed USB-C data ports. Video and charging support remain unverified.

Every specification. With its source.

Full specifications

Exact configuration: LS49DG912SUXXU · 49-inch QD-OLED · Samsung UK specification

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”.

Screen & panel

6 items
Screen diagonal class
49 in

Manufacturer nominal screen-size class.

Source
Native resolution
5120 × 1440

Exact selected-model notation: DQHD (5,120 x 1,440).

Source
Panel technology
QD-OLED

Exact table: OLED. Selected-model Features explicitly identify QD-OLED in Dual QHD.

Source
Aspect ratio
32:9

Manufacturer aspect-ratio designation.

Source
Screen curvature
1800R

Manufacturer curvature notation; no eye-comfort outcome is implied.

Source
Viewing-angle claim
178˚/178˚

Manufacturer horizontal/vertical viewing-angle claim.

Source

Refresh & response

4 items
Manufacturer maximum refresh rate
144 Hz

Samsung lists Max 144Hz. Actual rate depends on the input source. No input-by-input timing table or unlisted overclock is inferred.

Source
Manufacturer response-time claim
0.03ms(GTG)

Manufacturer table: 0.03ms(GTG). Samsung identifies GtG under internal testing; content, settings and source performance affect results. No independent latency measurement is inferred.

Source
Listed sync technology
G-Sync Compatible; FreeSync Premium Pro

Manufacturer NVIDIA sync designation; Compatible does not establish a hardware G-Sync module. · Manufacturer AMD sync designation; compatible GPU/source required.

Source
Adaptive synchronisation
Yes

Manufacturer positively lists FreeSync Premium Pro. Compatible GPU/source and mode required; no simultaneous MPRT support inferred.

Source
Manufacturer wording (1)

The same facts in the manufacturer’s combined or original wording, each with its source.

Listed refresh configuration
Max 144Hz

Manufacturer maximum, with source/input/cable restrictions. No other mode or per-port maximum is inferred.

Source

Colour, brightness & HDR

8 items
Typical brightness
250 cd/m²

Manufacturer Brightness (Typical): 250 cd/㎡. Not an independent measurement, real-use guarantee or adapter-rating substitution.

Source
Minimum brightness claim
200 cd/m²

Manufacturer Brightness (Min): 200 cd/㎡. Not an independent measurement, real-use guarantee or adapter-rating substitution.

Source
Static contrast claim
1,000,000:1

Manufacturer static contrast claim, separate from any dynamic HDR figure.

Source
Display colours
Max 1B

Manufacturer maximum colour count; native panel bit depth is not established by this alone.

Source
HDR formats/certification
VESA DisplayHDR True Black 400

Manufacturer format/certification listing; no measured peak brightness or real-scene HDR result is implied.

Source
HDR10+ support
HDR10+ Gaming

Manufacturer HDR10+ designation; supported source and content are required.

Source
DCI colour coverage
99% (CIE1976)

Exact manufacturer DCI coverage and any stated CIE basis; no gamut-volume or accuracy conversion.

Source
Factory calibration report
Yes

Exact manufacturer accessory/report declaration, not an independent colour-accuracy measurement.

Source

Inputs & connections

6 items
USB-C connection
Conflicting sources

Exact generic rows say USB-C: No and USB Hub: No, yet the same table and visible Features name one data-only USB-C upstream and two USB-C downstream ports (3.2 Gen1). Generic capability scope is unresolved; explicit data-port positives are retained separately. · Exact generic USB-C table declaration.

2 sources
Inputs and versions
1 EA DisplayPort 1.4; 1 EA HDMI 2.1; 1 Micro HDMI 2.1; 1 data-only USB-C upstream; 2 USB-C downstream; USB-C downstream version 3.2 Gen1; Headphone output: Yes

Manufacturer counts, roles and versions; confirm the source device, cable and display mode. Connector shape alone does not establish video or charging support.

Source
USB-C charging output
Not listed by the manufacturer

No charging-output rating is established by this exact source; no data-port or connector entry is converted to a power rating.

Source
USB hub
Conflicting sources

Exact generic rows say USB-C: No and USB Hub: No, yet the same table and visible Features name one data-only USB-C upstream and two USB-C downstream ports (3.2 Gen1). Generic capability scope is unresolved; explicit data-port positives are retained separately. · Exact table hub declaration/count and listed USB-A downstream roles, where applicable.

2 sources
Data-only USB-C upstream ports
1 port

Exact named upstream role: ONLY DATA. No charging or video-input support inferred.

Source
USB-C downstream ports
2 ports

Manufacturer version: 3.2 Gen1. No charging or video-output capability inferred.

Source

Stand & mounting

7 items
Stand height adjustment
Yes

Exact table names a height-adjustable stand and supplies a HAS row.

Source
Nominal stand height travel
Not listed by the manufacturer

Exact HAS row: 120.0 ± 5.0. A unit is not supplied, so this is not promoted to a known mm quantity. Height-adjustment presence remains positively established.

Source
Stand type
HASSource
Stand tilt
−2° to 15° (±2° tolerance)

Exact manufacturer angular endpoints and tolerances.

Source
Stand swivel adjustment
Not listed by the manufacturer

The exact selected-model table does not establish swivel. Omission is not absence.

Source
Stand pivot adjustment
Not listed by the manufacturer

No pivot declaration or range is established by the exact selected-model table. Omission is not absence.

Source
VESA mounting pattern
100 x 100

Match screw requirements, weight and mount load limits; pattern alone does not establish installation compatibility.

Source

Size, weight & build

7 items
Dimensions with stand
1194.7 x 529.3 x 284.1 mm

Manufacturer width × height × depth including stand; allow cable clearance.

Source
Width with stand
1194.7 mm

Manufacturer with-stand width, not active panel width.

Source
Depth with stand
284.1 mm

Manufacturer with-stand depth; cable space is additional.

Source
Weight with stand
12.9 kg

Manufacturer explicitly labels set weight with stand; packaging and bare display are separate.

Source
Dimensions without stand
1194.7 x 365 x 180.8 mm

Manufacturer width × height × depth; supplied stand excluded.

Source
Weight without stand
9.2 kg

Manufacturer explicitly labels set weight without stand.

Source
Active display dimensions
1,196.7x339.2 mm

Manufacturer horizontal × vertical order and precision; separate from chassis dimensions.

Source

Power & energy

6 items
Typical operating power claim
49 W

Manufacturer Power Consumption (Typ): 49.0 W. Not an independent measurement, real-use guarantee or adapter-rating substitution.

Source
Maximum power claim
220 W

Manufacturer Power Consumption (Max): 220 W. Not an independent measurement, real-use guarantee or adapter-rating substitution.

Source
DPMS power claim
0.5 W

Manufacturer Power Consumption (DPMS): 0.50 W. Not an independent measurement, real-use guarantee or adapter-rating substitution.

Source
Off-mode power claim
0.3 W

Manufacturer Power Consumption (Off Mode): 0.30 W. Not an independent measurement, real-use guarantee or adapter-rating substitution.

Source
Power supply
AC 100~240V

Manufacturer supply type: External Adaptor.

Source
Energy class
G

Manufacturer energy-label class; actual consumption depends on use.

Source

Eye care & features

2 items
Built-in smart platform
No

Exact manufacturer Smart Type: No. Applications on an external computer remain separate.

Source
OLED protection functions
Thermal brightness modulation; logo/taskbar detection; screen saver

Adjust Logo Brightness Off/Low limits thermal modulation to certain picture modes; High makes it always active. Logo detection is unavailable in PC mode. Screen saver dims after 10 minutes; no burn-in immunity is inferred.

Source

Audio

2 items
Built-in speakers
No

Exact table Speaker: No.

Source
Headphone output
Yes

Exact manufacturer table declaration.

Source

Box, warranty & identity

2 items
Burn-in coverage wording
Burn-in at normal usage covered within warranty.(But, not covered for Commercial, abuse or mis-use)

Manufacturer normal-use coverage wording. Commercial use, abuse and misuse are excluded; full purchase-market warranty terms apply.

Source
Listed supplied cables
HDMI Cable; HDMI to Micro HDMI Cable; DP Cable; USB Type-C to Type-A Gender Cable

Only explicitly listed UK supplied cables. The source lists a 1.5 m power cable; no unlisted speed certification or accessory is inferred.

Source
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