Display
26.5 in, QD-OLED, 2560 x 1440 pixels / Quad HD (QHD) / 1440p
26.5
Refresh Rate
48 Hz - 280 Hz
48 Hz
Brightness
250 cd/m²
250 cd
Contrast Ratio
1500000 : 1
1500000
Overview
The ASUS ROG Strix OLED XG27ACDMS is a 2560 x 1440 pixels / Quad HD (QHD) / 1440p QD-OLED monitor rated for a 48 Hz - 280 Hz refresh range. On the response-time front, it’s specified at 0.03 ms GtG. On the picture-quality side, it’s specified at 250 cd/m² typical brightness, 1500000 : 1 contrast and 99 % DCI-P3 coverage. Tearing is addressed through FreeSync, G-Sync, VESA AdaptiveSync Display 280Hz. For hookups, there’s 1x HDMI 2.1, 1x DisplayPort 1.4.
BrandASUSPanel TypeQD-OLEDResolution2560 x 1440 pixels / Quad HD (QHD) / 1440pRefresh Rate48 Hz - 280 Hz
Key Highlights
- QD-OLED panel at 2560 x 1440 pixels / Quad HD (QHD) / 1440p
- 48 Hz - 280 Hz refresh range — built for competitive, fast-paced gaming
- 0.03 ms GtG response time
- 1500000 : 1 contrast ratio
- 250 cd/m² typical brightness
- 99 % DCI-P3 colour coverage
- FreeSync, G-Sync, VESA AdaptiveSync Display 280Hz
- Connectivity: 1x HDMI 2.1, 1x DisplayPort 1.4
Who Should Buy the Asus ROG Strix OLED XG27ACDMS
+ Best For
Fast OLED gaming
280 Hz and a 0.03 ms claim target quick motion
Dark-room players
self-emissive pixels support deep blacks
Radeon and GeForce users
both adaptive-sync systems are listed
Flexible desks
height, pivot, swivel and tilt are included
× Not Ideal For
Multi-HDMI setups
only one HDMI 2.1 input is listed
Laptop charging
USB-C supplies only 15 W
USB peripheral users
no Type-A hub is listed
Speaker-dependent desks
there are no built-in speakers
Display Performance
Refresh Rate
48 Hz - 280 Hz
High-refresh gaming range
Response Time
0.03 ms GtG
Manufacturer-published transition time
Brightness
250 cd/m²
Typical brightness as specified; peak figure not published
Contrast
1500000 : 1
Standard panel black depth
Colour Gamut
99 % DCI-P3
Wide-gamut coverage is listed
Gaming Performance
Refresh Rate48 Hz - 280 HzHigh ceiling supports competitive frame rates
Response Time0.03 ms (GtG)Published claim without independent testing
VRR / Adaptive SyncFreeSync, G-Sync, VESA AdaptiveSync Display 280HzHelps reduce tearing on compatible GPUs
GPU Requirement2560 x 1440 pixels / Quad HD (QHD) / 1440p up to 280 HzHigh refresh ceiling needs a high-end GPU to fully utilise
HDR & Brightness Reality
QD-OLED gives the XG27ACDMS a useful HDR foundation because each pixel emits its own light. The sheet claims 1,000 cd/m² peak brightness, 1,500,000:1 contrast and DisplayHDR 400 True Black. Typical brightness is only 250 cd/m², however, and no peak-window size or duration is stated. The strongest HDR benefit should come from dark-scene contrast and small highlights rather than sustained full-screen brightness.
Connectivity & Ports
HDMI1x HDMI 2.1Published port count and version
DisplayPort1x DisplayPort 1.4Primary high-refresh PC connection
USB-CNot publishedNo one-cable laptop or charging function
USB HubNot publishedNo listed peripheral expansion
Audio Out3.5 mm audio out / headphone outExternal audio may still be preferred
Desk Fit & Ergonomics
Size / Footprint609 mm x 449 mm x 188 mm (W x H x D)Check desk width and depth before purchase
StandRemovable: YesA separate arm can replace the supplied base
VESA Mount100 x 100 mmUse a matching arm or wall mount
Tilt-5 ° to +20 ° / 1/4" Tripod SocketCovers the published forward and backward range
Height Adjust110 mm (4.33 in)Supports eye-level positioning
Swivel / Pivot±45 ° / ±90 °Supports shared angles and portrait rotation
Real-World Use Cases
280 Hz targets fast PC play
QD-OLED contrast is the main image advantage
FreeSync and G-Sync Compatible are supported
the stand includes pivot and broad adjustment
Pros & Cons
Pros
- 48 Hz 280 Hz refresh range with 0.03 ms GtG response is built for competitive, fast-paced gaming
- 1500000 : 1 contrast delivers near-infinite black depth
- FreeSync, G-Sync, VESA AdaptiveSync Display 280Hz give broad adaptive-sync compatibility
- 99 % DCI-P3 coverage wide-gamut coverage suits colour-critical work
- Stand offers 110 mm (4.33 in) height adjustment, swivel, pivot
- Backed by 3 years
- 110 ppi / 43 ppcm keeps text and UI edges crisp at normal desk distance
- OLED per-pixel dimming gives true blacks and instant pixel response
- 100 x 100 mm VESA mount compatibility works with third-party arms and stands
- Low blue light and/or flicker-free modes support longer viewing comfort
Cons
- No USB-C or USB hub for peripheral connectivity
- No listed built-in speakers
- No KVM switch for controlling two PCs from one keyboard/mouse
- No energy-efficiency certification (e.g. ENERGY STAR, TCO) is listed
- HDCP support isn’t explicitly confirmed for protected 4K/HDR streaming
- Limited or no USB-A downstream ports for connecting multiple accessories
Score & Ratings
8.2/10
Great
Model Information
13
| Specification | Value |
|---|---|
| Brand | ASUS |
| Series | ROG Strix |
| Model | ROG Strix OLED XG27ACDMS |
| Full Product Name | ASUS ROG Strix OLED XG27ACDMS |
| Model Year | 2025 |
| Monitor Type | Gaming Monitor |
| Market Position | Upper-Mid to High-End Gaming |
| Primary Use | Competitive & Immersive Gaming |
| Launch Status | 2025 |
| Available Colors | Black |
| Warranty | 3 years (36 months) standard limited warranty from date of purchase |
| Panel Warranty | 3 years |
| Burn-In Warranty | 3 years (36 months) OLED panel burn-in coverage on most models |
Display & Panel
15
| Specification | Value | What It Means |
|---|---|---|
| Screen Size | 26.5 in | |
| Exact Diagonal | 673.1 mm (26.50 in) | |
| Aspect Ratio | 16:9 | |
| Active Display Width | 590.42 mm (23.24 in) | |
| Active Display Height | 333.72 mm (13.14 in) | |
| Display Area | 87.63 % | |
| Panel Type | QD-OLED | QD-OLED affects viewing angles, black depth and color consistency — each panel technology trades these off differently. |
| Panel Technology | OLED | |
| Panel Manufacturer | Samsung | |
| OLED Technology | QD-OLED | |
| Backlight Type | Self-emissive (no backlight — OLED) | |
| Self-Emissive Display | Yes | |
| Quantum Dot | Yes | |
| 3D Support | No | |
| Screen Coating | Anti-glare/Matte (3H) |
Resolution & Pixel Details
3
| Specification | Value | What It Means |
|---|---|---|
| Native Resolution | 2560 x 1440 pixels / Quad HD (QHD) / 1440p | |
| Pixel Density | 110 ppi / 43 ppcm | 110 ppi / 43 ppcm indicates how much scaling may be needed in the operating system for comfortable reading. |
| Pixel Pitch | 0.229 mm (0.01 in) |
Picture Quality & Color
13
| Specification | Value | What It Means |
|---|---|---|
| Panel Bit Depth | 10 bits | |
| FRC | No | |
| Display Colors | 1073741824 colors / 30 bits | |
| Typical Brightness | 250 cd/m² | |
| Peak Brightness | 1000 cd/m² | |
| Static Contrast Ratio | 1500000 : 1 | |
| Horizontal Viewing Angle | 178 ° | |
| Vertical Viewing Angle | 178 ° | |
| HDR Support | DisplayHDR 400 True BlackHDR10 |
|
| HDR10 | Yes | |
| Global Dimming | Yes | |
| DCI-P3 Coverage | 99 % | 99 % indicates how much of that color space the panel can reproduce, which affects color accuracy for photo/video work. |
| Gamma Adjustment | Yes |
Refresh Rate, Response & Gaming
12
| Specification | Value |
|---|---|
| Native Refresh Rate | 280 Hz |
| Refresh Rate Range | 48 Hz - 280 Hz |
| Minimum Response Time | 0.03 ms |
| AMD FreeSync | Yes |
| NVIDIA G-Sync | Yes |
| Motion Blur Reduction | Yes |
| Shadow Boost | Yes |
| Crosshair | Yes |
| Dynamic Crosshair | Yes |
| AI Gaming Features | Yes |
| GameFast Input | Yes |
| GameVisual | Yes |
Ports & Connectivity
10
| Specification | Value |
|---|---|
| HDMI Ports | 1 |
| HDMI Version | 2.1 |
| HDMI Bandwidth | 27 kHz - 465 kHz |
| DisplayPort Input | 1 |
| DisplayPort Version | 1.4 |
| DisplayPort Bandwidth | HBR3 |
| USB-C Video Input | 1× USB-C |
| USB-C Power Delivery | 15 W |
| Audio Output | 3.5 mm |
| Headphone Output | 3.5 mm Audio Out |
Audio, Camera, Network & Smart Features
1
| Specification | Value |
|---|---|
| Built-In Camera | No |
Ergonomics & Stand
16
| Specification | Value | What It Means |
|---|---|---|
| VESA Mount | Yes | |
| VESA Size | 100 x 100 mm | |
| Removable Stand | Yes | |
| Height Adjustment | Yes | 110 mm (4.33 in) of travel allows the screen to be raised or lowered for a comfortable eye-level position. |
| Height Adjustment Range | 110 mm (4.33 in) | |
| Tilt Adjustment | Yes | |
| Forward Tilt | 5 ° | |
| Backward Tilt | 20 ° / 1/4" Tripod Socket | |
| Swivel Adjustment | Yes | |
| Left Swivel | 45 ° | |
| Right Swivel | 45 ° | |
| Left Pivot | 90 ° | |
| Right Pivot | 90 ° | |
| Portrait Mode | Yes | |
| Security Lock | Yes | |
| Anti-Theft Lock | Kensington Lock |
Dimensions, Weight & Design
5
| Specification | Value |
|---|---|
| Dimensions With Stand | 609 mm x 449 mm x 188 mm (W x H x D) |
| Dimensions Without Stand | 609.369 mm x 369 mm x 66 mm (W x H x D) |
| Weight With Stand | 6.1 kg (13.45 lbs) |
| Weight Without Stand | 3.8 kg (8.38 lbs) |
| Stand Depth | 188 mm (7.40 in) |
Power & Operating Conditions
13
| Specification | Value |
|---|---|
| Power Input | 100–240V |
| 110V Input Range | 100 V - 120 V |
| 220V Input Range | 220 V - 240 V |
| AC Frequency | 50 Hz - 60 Hz |
| Average Power Consumption | 28 W |
| Sleep Consumption | 0.5 W |
| Off Consumption | 0.3 W |
| Operating Temperature | 0 °C - 40 °C / 32 °F - 104 °F |
| Operating Humidity | 10 % - 85 % |
| Operating Altitude | 3657.6 m / 12000 ft |
| Storage Temperature | -25 °C - 55 °C / -13 °F - 131 °F |
| Storage Humidity | 5 % - 93 % |
| Storage Altitude | 12192 m / 40000 ft |
Eye Care, Protection & Additional Features
15
| Specification | Value |
|---|---|
| Low Blue Light | Yes |
| Proximity Sensor | Yes |
| OLED Protection | Yes |
| OLED Care | Yes |
| Pixel Refresh | Yes |
| Static Logo Detection | Yes |
| Screen Saver | Yes |
| Burn-In Protection | Yes (ASUS OLED Care / OLED Care Pro) |
| Thermal Management | Yes |
| Custom Heatsink | Yes |
| Desktop Control Software | Yes |
| Monitor Management Software | Yes |
| Multiple HDR Modes | Yes |
| Anti-Theft Slot | Yes (Kensington lock slot) |
| Additional Monitor Features | AI Visual; Aspect Ratio Control; Asus DisplayWidget Center; Asus Power Sync; Boundary Detection; Clear Pixel Edge; Custom Heatsink; GameFast Input; GamePlus; GameVisual; Global Dimming Control; Logo Brightness Adjustment; Luminance Compensation Algorithm; Multiple HDR Mode; Neo Proximity Sensor; Outer Dimming Control; Pixel Cleaning; Refresh Rate Cap; Screen Move; Screen Saver; Target Mode; Taskbar Detection; Uniform Brightness; Other certifications: CCC; CEL |
Certifications, Standards & Licenses
8
| Specification | Value |
|---|---|
| TÜV Flicker-Free | Yes |
| TÜV Low Blue Light | Yes |
| VESA DisplayHDR | DisplayHDR 400 True Black |
| VESA AdaptiveSync | Display 280Hz |
| RoHS | Yes |
| CE | Yes |
| FCC | Yes |
| UL | Yes |
Included Accessories
1
| Specification | Value |
|---|---|
| DisplayPort Cable | DisplayPort cable |
Packaging Information
5
| Specification | Value |
|---|---|
| Package Dimensions | 860 mm x 500 mm x 162 mm (W x H x D) |
| Package Width | 860 mm (33.86 in) |
| Package Height | 500 mm (19.68 in) |
| Package Depth | 162 mm (6.38 in) |
| Package Weight | 8.5 kg (18.74 lbs) |
Frequently Asked Questions
01 Why does the XG27ACDMS have only one HDMI 2.1 port? +
That is the count shown on the supplied sheet. Users with several HDMI devices will need an external switch or frequent cable changes.
02 What does VESA AdaptiveSync Display 280Hz add to the sync list? +
It is a VESA certification alongside FreeSync Premium Pro and G-Sync Compatible. The sheet therefore lists variable-refresh support across several ecosystems.
03 Can the 1000 cd/m² peak be treated as full-screen brightness? +
No. The sheet gives no test-window size or duration, while typical brightness is 250 cd/m². The peak is likely limited to smaller HDR highlights.
04 Why is the lack of a USB Type-A hub notable? +
Many premium gaming monitors include downstream ports for peripherals. Here, the published connection list contains only USB-C, HDMI, DisplayPort and audio out.
05 How does the 280 Hz ceiling compare with the panel's QHD resolution? +
It offers a strong speed-and-detail balance, but reaching 280 fps at 2560 x 1440 still requires a fast GPU and suitable game settings.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № ROG STRIX OLED XG27ACDMS