MSI MPG 341CQPX QD-OLED34.18-inch · 3440 × 1440 · 240 Hz · MSI global specification- Refresh rate at native resolution
- 240 HzThis one: 175 Hz
MONITORS
AOC AG346UCD
34-inch QD - OLED · UK specification
- Screen diagonal
- 34 in
- Native resolution
- 3440 × 1440
- Refresh rate at native resolution
- 175 Hz
A 34-inch 3440 × 1440 ultrawide QD-OLED with an 1800R curve, up to 175 Hz over DisplayPort, a 0.03 ms response rating and DisplayHDR True Black 400.
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THE ACTUAL PRODUCT
Compare with MSI MPG 341CQPX QD-OLED
Specifications checked 21 Sept 2026Manufacturer specifications, not a hands-on test.
The nearest checked monitors by key specifications, with what differs from the AOC AG346UCD. The first matches the Compare button above.
MSI MPG 341CQPX QD-OLED34.18-inch · 3440 × 1440 · 240 Hz · MSI global specification
ASUS ROG Strix OLED XG34WCDMTGUK manufacturer specification · ROG Strix OLED XG34WCDMTG- Refresh rate at native resolution
- 240 HzThis one: 175 Hz
ASUS ROG Strix OLED XG34WCDMSGlobal manufacturer specification · ROG Strix OLED XG34WCDMS- Refresh rate at native resolution
- 280 HzThis one: 175 Hz
Key strengths
The curved QD-OLED panel reaches 175 Hz over DisplayPort with a 0.03 ms response rating, 1.5M:1 contrast and up to 1000 cd/m² HDR peak brightness in a 3% window.
The stand gives 130 mm of height travel with tilt and swivel, and a USB 3.2 hub provides three downstream ports.
It has 2 × 8 W speakers, PiP and PbP, and a 3-year warranty that includes OLED burn-in when AOC's screen-maintenance instructions are followed.
Before you buy
It weighs 10.82 kg with the stand and needs 294.3 mm of desk depth, plus room for cables.
Full-screen SDR brightness is listed at 250 cd/m², and AOC gives 100 W typical power use with an F energy class.
The two HDMI 2.0 inputs are limited to 120 Hz; only DisplayPort reaches 175 Hz. AOC's page lists 10-bit colour in the specifications but “True 8-bit color” in its feature text.
Every specification. With its source.
Full specifications
Exact configuration: AG346UCD · 34-inch QD - OLED · AOC UK specification
62 specifications in 10 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Screen & panel
7 items
- Screen diagonal
- 34 in
Manufacturer-listed panel diagonal; a rounded size may appear in the product name.
Source - Native resolution
- 3440 × 1440
Manufacturer resolution notation: 3440x1440. See the separate refresh-mode conditions for any lower-resolution configurations.
Source - Panel technology
- QD-OLED
AOC prints "QD - OLED"; spacing normalised.
Source - Aspect ratio
- 21:9Source
- Screen coating
- Anti-ReflectionSource
- Screen curvature
- 1800RSource
- Viewing angles and basis
- 178/178Source
Refresh & response
10 items
- Refresh rate at native resolution
- 175 Hz
At native resolution. Listed vertical input ranges: HDMI 48–120 Hz; DisplayPort 48–175 Hz.
Source - GtG response-time claim
- 0.03 ms
Manufacturer response time; GtG and MPRT are different measures and depend on settings.
Source - Listed refresh modes and input limits
- DisplayPort: up to 175 Hz; HDMI: up to 120 Hz
From AOC's listed vertical input ranges (DisplayPort 48–175 Hz; HDMI 48–120 Hz); the panel's maximum is 175 Hz at 3440 × 1440.
Source - Adaptive sync
- Yes
Needs a compatible source device, input and driver; console VRR support varies.
Source - Listed sync technology
- Adaptive SyncSource
- Listed NVIDIA sync support
- NVIDIA G-SYNC CompatibleSource
- Listed AMD sync support
- AMD FreeSync PremiumSource
- Vertical input-frequency range
- HDMI:48~120Hz / DP:48~175HzSource
- Adaptive-sync range
- 48–175 HzSource
- Maximum HDMI refresh
- 120 Hz
From the HDMI vertical frequency range 48~120Hz; HDMI 2.0 ports. DisplayPort reaches 175 Hz.
Source
Colour, brightness & HDR
11 items
- Declared typical brightness
- 250 cd/m²
SDR at APL 100%.
Source - Brightness modes and window sizes
- SDR: 250 nits (APL 100%); HDR: 450 nits (APL 10%); HDR E/P: 1000 nits (APL 3%)
Different window sizes (APL) are separate conditions.
Source - Static contrast
- 1.5M:1Source
- Displayable colours
- 1.073 billion
Specification row reads “1.073B (10 bits)”; the bit-depth statement conflicts with the page's 8-bit feature text (see colour depth).
Source - HDR formats / certification
- VESA Certified DisplayHDR True Black 400
Manufacturer-listed HDR formats or certification.
Source - Colour space (sRGB) CIE 1976 %
- 139.1
Manufacturer colour specification in its stated colour space.
Source - Colour space (DCI-P3) CIE 1976 %
- 99.3
Manufacturer colour specification in its stated colour space.
Source - Colour space (Adobe RGB) CIE 1976 %
- 97.8
Manufacturer colour specification in its stated colour space.
Source - Colour depth
- Not listed by the manufacturer
AOC's UK specification lists 1.073B colours (10 bits), but the page's feature text says “True 8-bit color”.
Source - Declared HDR peak brightness
- 1000 cd/m²
HDR E/P mode at APL 3%; not full-screen or sustained output.
Source - Declared colour accuracy
- Delta E < 2 (sRGB)
Manufacturer figure.
Source
Inputs & connections
7 items
- USB-C connection
- Not listed by the manufacturer
The AOC UK connectivity list names HDMI 2.0, DisplayPort 1.4, USB 3.2 Gen 1 downstream ports and a headphone output; no USB-C connection is listed or explicitly excluded.
Source - Inputs, connections and versions
- 2 × HDMI 2.0; 1 × DisplayPort 1.4; 3 × USB downstream; 3.5 mm headphone output
Manufacturer port counts and versions; the source device and cable must support the mode you want.
Source - USB-C / Thunderbolt charging output
- Not listed by the manufacturer
No USB-C charging output is listed. A 'USB fast charge port' entry appears without a type or wattage.
Source - Picture-in-picture / side-by-side modes
- PiP+PbPSource
- USB hub
- Yes
Needs the upstream cable connected to a computer for hub data. Port counts and USB generation are listed separately.
Source - USB hub connections
- 3 × USB 3.2 Gen 1 downstream; USB-B upstream (USB-B to A cable supplied)
A 'USB fast charge port' is listed without its wattage.
Source - HDMI version
- 2.0Source
Stand & mounting
5 items
- Height-adjustable stand
- Yes
Height-adjustable stand; travel is listed separately.
Source - Stand height travel
- 130 mm
Manufacturer-listed travel: 130mm. Not calculated from the external height range.
Source - VESA mounting pattern
- 100x100
Match the screw size, monitor weight and the mount's load rating as well as the hole pattern.
Source - Stand tilt
- −5° to +25° (AOC tolerance +3/−0° and −3/+0°)Source
- Stand swivel
- −28° to 28° (±2° tolerance)Source
Size, weight & build
6 items
- Dimensions with stand
- 811.7 × 421.5–551.2 × 294.3 mm (width × height × depth, with stand)
Manufacturer dimensions in the stated orientation; allow extra room for cables and stand movement. A height range shows the stand's lowest and highest positions.
Source - Depth with stand
- 294.3 mm
Depth from the manufacturer dimension tuple. Allow additional room for cable routing and movement.
Source - Width with stand
- 811.7 mm
Manufacturer width in the listed landscape configuration.
Source - Weight with stand
- 10.82 kg
Net product weight with the supplied stand or arm; packaging excluded.
Source - Dimensions without stand
- 811.7 × 361.2 × 130.2 mm (width × height × depth)
Manufacturer dimensions in the stated orientation; allow extra room for cables and stand movement. A height range shows the stand's lowest and highest positions.
Source - Weight without stand (kg)
- 7.65Source
Power & energy
5 items
- Typical / normal operating power
- 100 W
Manufacturer typical power figure; brightness, USB devices and charging load change real use.
Source - Power supply
- InternalSource
- Standby power (W)
- 0.5
Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Source - Power when off (W)
- 0.3
Manufacturer power figure under the stated operating mode; real use, brightness, connected USB devices and charging load can differ.
Source - Listed energy class
- FSource
Eye care & features
4 items
Audio
3 items
Box, warranty & identity
4 items
- Listed warranty period
- 3 years (including OLED burn-in)
Burn-in cover applies when screen maintenance follows AOC's instructions; check the purchase market and full terms.
Source - Manufacturer-listed EAN
- 4038986112444Source
- Listed cable bundle
- HDMI cable: 1x; Displayport cable: 1x; USB-B upstream cable: 1x USB-B to A 1.8m; Power Cable: True
Check the seller's box contents.
Source - Specification market
- UK
UK model specification; US versions can differ in plugs, bundled accessories and warranty.
Source
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