AOC AG276UZDAG276UZD · 26.5-inch QD - OLED · AOC UK specification- Panel technology
- QD - OLEDThis one: QD-OLED (Tandem QD-OLED)
MONITORS
ASUS ROG Swift OLED PG27UCDM
UK specification
- Screen diagonal
- 26.5 in
- Native resolution
- 3840 × 2160
- Refresh rate
- 240 Hz
A 26.5-inch (27-inch class) 3840 × 2160 Tandem QD-OLED gaming monitor rated at 240 Hz on DisplayPort 2.1a, HDMI 2.1 and USB-C (the user guide gives 3840 × 2160 at up to 120 Hz on USB-C when its Type-C bandwidth is set to USB 3.2), with a 0.03 ms GtG claim, DisplayHDR 400 True Black, Dolby Vision, 90 W USB-C power delivery, a KVM switch and a 3-year warranty that includes burn-in.
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THE ACTUAL PRODUCT
Compare with AOC AG276UZD
Specifications checked 26 Sept 2026Manufacturer specifications, not a hands-on test.
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- Response method and claim
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Key strengths
All three video inputs list 48–240 Hz: DisplayPort 2.1a (UHBR20, 80 Gbps), two HDMI 2.1 (FRL) ports for consoles, and USB-C with 90 W power delivery (up to 3840 × 2160 at 120 Hz when the USB-C bandwidth is set to USB 3.2), plus a KVM switch and a three-port USB hub with a USB Type-B upstream port.
ASUS lists 99% DCI-P3, 10-bit colour, ΔE < 2 and a 1,000 cd/m² HDR peak (DisplayHDR 400 True Black), at 0.153 mm pixel pitch.
The UK warranty is 3 years including panel burn-in, and ASUS lists OLED Care Pro, a Neo Proximity Sensor, a custom heatsink with internal airflow, and OLED Anti-Flicker 2.0.
Before you buy
ASUS publishes only an upper-bound (<80 W) on-mode power figure, and the peak brightness figure has no window size and may vary with colour pre-calibration.
There are no built-in speakers.
The listed accessories vary by region: the US page lists a much shorter accessory set than the UK page.
Every specification. With its source.
Full specifications
Exact configuration: UK specification
68 specifications in 10 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Screen & panel
7 items
Refresh & response
9 items
- Refresh rate
- 240 Hz
ASUS lists 48–240 Hz on HDMI, DisplayPort and USB-C.
Source - Response method and claim
- 0.03 ms GtGSource
- Declared grey-to-grey response
- 0.03 ms
Manufacturer claim; not a measured response or input-lag result.
Source - Adaptive sync
- YesSource
- Named adaptive-sync technology
- AMD FreeSync Premium Pro; NVIDIA G-SYNC Compatible; VESA AdaptiveSync Display 240HzSource
- Declared variable-refresh range
- 48–240 Hz (HDMI and DisplayPort)
User guide: Variable Refresh Rate 'can only be activated within 48Hz~240Hz for HDMI and DisplayPort'; ASUS states no variable-refresh range for USB-C. The technical table's signal-frequency rows (HDMI and DP/Type-C 48~240Hz vertical) are input ranges and are recorded under refresh_rate.
- Maximum HDMI refresh
- 240 HzSource
- Maximum USB-C refresh
- 240 Hz
240 Hz is the technical-table maximum for USB-C. The user guide’s Type-C Bandwidth setting selects USB 2.0 or USB 3.2 for the USB-C port and states “USB 3.2 is up to 3840x2160@120Hz”.
- Motion-blur reduction mode
- Yes
ASUS ELMB. The user guide says ELMB is only available when the refresh rate is 120 Hz, Variable Refresh Rate must be turned off first, and turning ELMB on disables Variable Refresh Rate, Blue Light Filter, Aspect Control, PIP/PBP, Brightness and Uniform Brightness.
Colour, brightness & HDR
10 items
- Typical brightness
- 250 cd/m²
User-guide figure “250nits (typ.)”; ASUS does not state its measurement basis. The UK and US technical tables list only the 1,000 cd/m² HDR peak.
Source - Declared HDR peak brightness
- 1000 cd/m²
Peak HDR figure; ASUS gives no window size and notes that peak brightness may vary due to colour pre-calibration. The model carries VESA DisplayHDR 400 True Black.
Source - Contrast claim
- 1,500,000:1Source
- Displayable colours
- 1.07 billion (10-bit)Source
- Declared colour-gamut figures
- DCI-P3 99%; sRGB 145%
ASUS does not state the CIE basis; a figure above 100% is relative gamut size, not coverage.
Source - HDR support
- HDR10; Dolby Vision; VESA DisplayHDR 400 True BlackSource
- HDR picture modes
- HDR Setting modes: Gaming HDR; Cinema HDR; Console HDR; DisplayHDR 400 True Black. DolbyVision Setting modes: DolbyVision Bright; DolbyVision Dark; DolbyVision Gaming
User-guide HDR Setting and DolbyVision Setting options. The guide lists the HDR Setting modes separately from the HDR Format choice (HDR10 or DolbyVision) and does not tie them to one format. Gaming HDR and Cinema HDR include a Dynamic Brightness Boost that cannot be disabled; a separate Dynamic Brightness Boost option is designed for Console HDR and enhances HDR brightness when enabled. Adjustable HDR allows HDR brightness adjustment and affects the HDR PQ curve. DolbyVision Setting is only available when HDR Format is DolbyVision and the monitor receives Dolby Vision content.
Source - Colour depth
- 10-bit (1,073.7 million colours)
ASUS’s UK product page advertises “true 10-bit color”; the technical table lists 1073.7M colours (10 bit). Manufacturer claim, not a measured result.
- Colour-accuracy claim
- ΔE < 2
Manufacturer claim; test conditions not stated.
Source - Factory calibration report
- Yes
Colour calibration e-report viewed via DisplayWidget Center; the user guide’s on-screen menu also includes a Color Calibration Report view.
Inputs & connections
9 items
- USB-C connection
- YesSource
- Inputs and versions
- 1 × DisplayPort 2.1a (UHBR20, 80 Gbps); 2 × HDMI 2.1 (FRL, 48 Gbps); 1 × USB-C (DisplayPort Alt Mode, 90 W power delivery); headphone output
The technical table lists “DisplayPort 2.1”; the product page specifies DisplayPort 2.1a UHBR20 with full 80 Gbps bandwidth (4K at 240 Hz or 8K at 60 Hz without compression) and HDMI 2.1 at 48 Gbps full bandwidth.
- DisplayPort version
- 2.1a (UHBR20, 80 Gbps)
Product-page figure; the technical table and user guide list DisplayPort 2.1. ASUS says the 80 Gbps link supports 4K at 240 Hz or 8K at 60 Hz without compression.
- HDMI version
- 2.1 (FRL, 48 Gbps)
Two HDMI 2.1 (FRL) inputs; the product page states 48 Gbps full bandwidth and HDMI 2.1 VRR at 4K 120 Hz for PS5 and Xbox Series X.
- USB-C charging
- 90 W
The user guide lists “USB Type-C x1 (DP alt mode)(PD 90W)” and output voltages 5V/3A, 9V/3A, 15V/3A and 20V/4.5A.
- USB hub
- YesSource
- USB data connections
- USB 3.2 Gen 1 hub: 3 × Type-A downstream (5 V/0.9 A) and 1 × Type-B upstream
The technical table lists the three Type-A ports; the user guide specification lists “Downstream: USB Type-A x3 (5V/0.9A)” and “Upstream: USB Type-B x1”. The USB-C port also carries data (Type-C Bandwidth USB 2.0 or USB 3.2).
- Built-in KVM
- YesSource
- Picture-in-picture / picture-by-picture
- Yes
PIP/PBP menu with small, middle or large PIP sizes. The user guide says PIP/PBP cannot be used with HDR and disables variable refresh rate, ELMB, Sniper, Aspect Control and DSC. · Selected in the same PIP/PBP menu; the same HDR and feature restrictions apply.
Source
Stand & mounting
9 items
- Height-adjustable stand
- YesSource
- Stand height travel
- 110 mm
Adjustment travel, not overall assembled height.
Source - Tilt range
- −5° to +20°Source
- Swivel adjustment
- YesSource
- Portrait pivot
- YesSource
- Stand adjustment
- Tilt −5° to +20°; swivel ±30°; pivot ±90°; height travel 110 mmSource
- VESA mounting pattern
- 100 × 100 mmSource
- Kensington lock slot
- YesSource
- 1/4-inch tripod socket
- YesSource
Size, weight & build
7 items
- Dimensions with stand
- 610.3 × 549.5 × 218.8 mm (width × height × depth, with stand)
Converted from ASUS’s centimetre figures; ASUS labels dimensions as estimates that vary by region. The 549.5 mm height is the highest stand position; the user guide gives 610.3 × 439.5 × 218.8 mm with the stand lowest and 610.3 × 549.5 × 218.8 mm highest.
- Depth with stand
- 218.8 mm
Front-to-back depth with the supplied stand; allow cable clearance.
Source - Dimensions without stand
- 610.3 × 369.2 × 70.5 mm (width × height × depth)Source
- Active display area
- 589.97 × 332.93 mm (horizontal × vertical)Source
- Weight with stand
- 7.62 kg
Estimate that may vary by region.
Source - Weight without stand
- 4.97 kgSource
- Gross shipping weight
- 12.4 kgSource
Power & energy
3 items
- Declared power limits
- On: <80 W; power saving: <0.5 W; off: <0.3 W
Upper bounds; not typical running-power measurements. The user guide says the on-mode figure is measured at a screen brightness of 200 nits without audio, USB or card-reader connections.
- Typical operating power consumption
- Not listed by the manufacturer
ASUS publishes only an upper bound (<80 W); the user guide says the on-mode figure is measured at a screen brightness of 200 nits without audio, USB or card-reader connections. No typical operating figure is stated.
- Power input
- AC input 100–240 V, 50/60 HzSource
Eye care & features
9 items
- GameVisual picture modes
- Scenery; Racing; Cinema; RTS/RPG; FPS; sRGB Cal; MOBA; Night Vision; User
The product page describes seven GameVisual presets (Racing, MOBA, Cinema, RTS/RPG, FPS, sRGB, Scenery); the user guide lists nine, adding Night Vision and User Mode and naming the sRGB preset “sRGB Cal”. The guide says GameVisual is disabled when HDR is on.
- On-screen gaming tools
- GamePlus (FPS Counter, Crosshair with Dynamic Crosshair, Sniper, Timer, Stopwatch, Display Alignment); Shadow Boost; GameFast Input; Aspect Control (4:3 at 1280 × 960 or 1024 × 768; 24.5-inch 3552 × 1998 at 240 Hz); AI Assistant (AI Visual, Dynamic Crosshair, Dynamic Shadow Boost); Uniform Brightness; Auto Low Latency Mode; DisplayWidget Center software
Named ASUS functions from the UK technical table, product page and user guide. The guide says Aspect Control disables variable refresh rate, ELMB and PIP/PBP. The product page says Uniform Brightness applies in sRGB mode. DisplayWidget Center is desktop software for changing monitor settings with a mouse.
- OLED care features
- ASUS OLED Care Pro (pixel cleaning, screen move, boundary detection, screen saver, logo brightness adjustment, taskbar detection, outer and global dimming control, target mode); Neo Proximity Sensor
The technical table lists “ASUS OLED Care”; the product page names the suite ASUS OLED Care Pro. The Neo Proximity Sensor switches to a black image when the user steps away, with a customisable detection distance.
- Cooling
- Custom heatsink with internal airflow design
ASUS says the custom heatsink and internal airflow improve cooling and reduce the risk of burn-in. ASUS does not state whether the design is fanless.
Source - OLED anti-flicker
- ROG OLED Anti-Flicker 2.0 (luminance compensation algorithm; refresh-rate cap presets High / Mid / Off)
ASUS claims up to 20% less flicker than previous-generation (3rd-gen QD-OLED) panels; not a measured result. The user guide says the function works only within a limited refresh-rate range and only on DisplayPort or USB-C input.
- Lighting effect
- Aura SyncSource
- Flicker-free declaration
- YesSource
- Low Blue Light certification
- YesSource
- Hardware blue-light reduction
- YesSource
Box, warranty & identity
3 items
- Listed accessories
- DisplayPort cable; DisplayPort 2.1 (DP80) cable; HDMI Ultra High Speed cable; microfibre cloth; power cord; quick start guide; ROG pouch; ROG sticker; USB 3.2 cable; USB-C cable; VESA mount kit; warranty card
ASUS says accessories vary by region; the US page lists only a DisplayPort cable, power cord, quick start guide, ROG pouch, ROG sticker and warranty card.
Source - Manufacturer warranty
- 3 years (including panel burn-in)
As stated on the ROG UK page; regional terms apply.
Source - Regional configuration
- Part numbers as observed on 26 September 2026: the ROG UK specification page’s schema.org sku is 90LM0B30-B01971 but its Buy Now configuration link is 90LM0B30-B02971; the ROG US specification page’s schema.org sku is 90LM0B30-B019B2, its configuration link is 90LM0B30-B01971 and its page data also lists part 90LM0B30-B019B1. ASUS does not say which code applies to which market or configuration, so no single UK part number is asserted. The US table gives the same resolution, refresh, input, power, dimension and weight figures and the same 3-year burn-in warranty. It omits rows present in the UK table (panel size; DCI-P3; the QD-OLED Panel Type row; display surface; contrast; response time; colour accuracy; display colours; HDR10; maximum refresh rate; ASUS OLED Care; GameFast Input; KVM switch; colour calibration e-report; the Audio section; tripod socket; swivel, pivot and height adjustment; proximity sensor; and the TÜV Low Blue Light, VESA AdaptiveSync and AMD FreeSync Premium Pro certificates) and lists a shorter accessory set. These are omissions, not contrary values.
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