Display
34.18-inch, QD-OLED, 3440 x 1440 pixels
34.18
Refresh Rate
48 Hz - 360 Hz
48 Hz
Brightness
300 cd/m²
300 cd
Contrast Ratio
1500000 : 1
1500000
Overview
The Asus ROG Swift OLED PG34WCDN pushes a 34-inch QD-OLED ultrawide to 360 Hz, which is the fastest this panel class currently goes. Combined with a 0.03 ms response, both G-Sync Compatible and FreeSync Premium Pro certification, and 1,500,000:1 contrast, it is aimed squarely at players who want esports speed without giving up the immersion of 21:9. The panel is bright for OLED at 1300 cd/m2 peak, covers 99% DCI-P3, and carries DisplayHDR 500 True Black. Practical touches matter too: 90 W USB-C means it doubles as a laptop dock, and Asus includes OLED Care Pro for burn-in management. There are no speakers at all, and 3440 x 1440 at 360 fps asks a great deal of any GPU.
BrandAsusPanel TypeQD-OLEDResolution3440 x 1440Refresh Rate48-360 Hz
Key Highlights
- 360 Hz on a 34-inch QD-OLED ultrawide - the fastest in this class
- 1300 cd/m2 peak brightness, high for an OLED panel
- Both G-Sync Compatible and FreeSync Premium Pro certified
- 90 W USB-C with DP Alt Mode - it works as a laptop dock as well as a gaming screen
- OLED Care Pro plus TUV Rheinland flicker-free certification
Who Should Buy the Asus ROG Swift OLED PG34WCDN
+ Best For
Competitive players who want ultrawide
360 Hz with a 0.03 ms response
Either GPU brand
G-Sync Compatible and FreeSync Premium Pro both certified
Laptop-and-PC desks
90 W USB-C handles video, data and charging
Dark-room gaming
1,500,000:1 contrast with no backlight glow
× Not Ideal For
Mid-range GPUs
3440 x 1440 at 360 fps needs a genuinely strong card
Desks without speakers
there is no built-in audio of any kind
Portrait layouts
no pivot, which is normal for a 34-inch ultrawide
All-day static UI work
OLED still needs burn-in care
Display Performance
Refresh Rate
48-360 Hz
the fastest 34-inch ultrawide refresh available
Response Time
0.03 ms
instant transitions with no smearing
Brightness
300 cd/m2 typical / 1300 peak
strong OLED peak, modest full-screen
Contrast
1,500,000:1
self-lit blacks, ideal for dark scenes
Colour Gamut
99% DCI-P3, 135% sRGB
wide and accurate
HDR
DisplayHDR 500 True Black
the OLED-specific tier, judged on black level
Gaming Performance
Refresh Rate360 Hzesports-grade speed across the full 21:9 width
Response Time0.03 msnothing blurs behind fast tracking
VRR / Adaptive SyncG-Sync Compatible + FreeSync Premium Protear-free on both brands
GPU Requirementa high-end card - 3440 x 1440 at 360 fps is a demanding target
HDR & Brightness Reality
1300 cd/m2 peak is high for QD-OLED, and against true self-lit blacks it produces the sort of highlight contrast an LCD cannot reach - DisplayHDR 500 True Black is the correct certification here because it grades black level rather than raw output. The number to keep in mind is 300 cd/m2 across a full white screen, which is what a bright room actually tests. In controlled light this is excellent HDR; under a window it flattens like every other OLED.
Connectivity & Ports
HDMIHDMI inputfor a console, though it cannot reach 360 Hz
DisplayPortDisplayPort inputthe connection for the full 360 Hz on PC
USB-C1 x USB-C, 90 W, DP Alt Modepicture, data and laptop charging on one cable
USB Hub3 x USB-A 3.2 downstreamplenty for peripherals
Audio Out3.5 mmno speakers at all on this model
Desk Fit & Ergonomics
Size / Footprint34.18-inch 21:9, 813 mm widewide, and 8.3 kg with the stand
StandIncluded, removable5.6 kg panel alone
VESA Mount100 x 100 mmstandard arm fit
Tilt-3 to +20 degreesa slightly narrow forward tilt
Height Adjust110 mmreasonable travel for eye-level setup
Swivel / PivotSwivel +/-30 degrees, no pivotlandscape only, as expected at 21:9
Real-World Use Cases
360 Hz with 0.03 ms across the full 21:9 field
QD-OLED contrast with peripheral width
90 W USB-C plus three USB-A ports replaces a separate hub
1300 cd/m2 highlights against true black
Pros & Cons
Pros
- 360 Hz on QD-OLED the fastest 34-inch ultrawide available
- 1300 cd/m2 peak with 1,500,000:1 contrast and 99% DCI-P3
- Certified for both G-Sync and FreeSync Premium Pro
- 90 W USB-C plus three USB-A ports it doubles as a dock
- OLED Care Pro for burn-in management
Cons
- No speakers at all
- 3440 x 1440 at 360 fps demands a high-end GPU
- 300 cd/m2 full-screen brightness prefers controlled light
- No pivot, and tilt starts at only -3 degrees
Score & Ratings
8.8/10
Great
Basic Information
5
| Specification | Value |
|---|---|
| Brand | Asus |
| Model | ROG Swift OLED PG34WCDN |
| Series | ROG Swift |
| Model Alias | ROG Swift OLED PG34WCDN |
| Model Year | 2026 |
Display
8
| Specification | Value | What It Means |
|---|---|---|
| Size Class | 34.18-inch | |
| Panel Type | QD-OLED | QD-OLED - self-lit quantum-dot pixels; true blacks and saturated colour. |
| Curvature | Not specified | |
| Resolution | 3440 x 1440 pixels | |
| Aspect Ratio | 21:9 | |
| Pixel Density | 109 PPI | |
| Pixel Pitch | 0.231 mm | |
| Display Area | 88.88 % |
Color & HDR
5
| Specification | Value |
|---|---|
| Color Depth | 10 bits |
| Colors | 1073741824 colors |
| sRGB | 135 % |
| DCI-P3 Coverage | 99 % |
| HDR Support | DisplayHDR 500 True BlackHDR10 |
Brightness & Contrast
3
| Specification | Value | What It Means |
|---|---|---|
| Brightness (Typical) | 300 cd/m² | 300 cd/m2 - the full-screen figure, and the real bright-room limit. |
| Peak Brightness | 1300 cd/m² | 1300 cd/m2 - high for OLED; applies to small highlights, not full screen. |
| Contrast | 1500000 : 1 | 1,500,000:1 - pixels switch fully off, so there is no glow around bright objects. |
Performance
3
| Specification | Value | What It Means |
|---|---|---|
| Refresh Rate | 48 Hz - 360 Hz | 48-360 Hz - the fastest refresh available on a 34-inch ultrawide. |
| Response Time | 0.03 ms | 0.03 ms - effectively instant, so fast tracking stays sharp. |
| Adaptive Sync | AMD FreeSync Premium ProNVIDIA G-Sync Compatible |
G-Sync Compatible and FreeSync Premium Pro - tear-free on either GPU brand. |
Display Technologies
1
| Specification | Value |
|---|---|
| Advanced Display Technologies | Panel Technology: QD-OLEDBacklight: -Viewing Angles: 178° / 178°Response Time: 0.03 msCoating: Anti-glare/Matte (3H) |
Camera
1
| Specification | Value |
|---|---|
| Camera | No |
Audio
1
| Specification | Value |
|---|---|
| Audio | No built-in speakers |
Connectivity & Ports
2
| Specification | Value | What It Means |
|---|---|---|
| Ports | 1× USB 3.2 (Type-C · upstream · 90W · DP Alt Mode)3× USB 3.2 (Type-A · Gen 1 · 5 Gbps · downstream)2× HDMI 2.1 (FRL6 (48 Gbps))1× DisplayPort 2.1 (UHBR20 (80 Gbps))1× Optical Audio Out1× 3.5 mm Audio Out |
USB-C 90 W with DP Alt Mode - enough to run and charge a laptop over one cable. |
Ergonomics
6
| Specification | Value | What It Means |
|---|---|---|
| VESA Mount | 100 x 100 mm | |
| Height Adjustment | 110 mm | 110 mm - decent travel for setting the screen at eye level. |
| Pivot | No | |
| Swivel | ±30° | |
| Tilt | -3° to +20° | |
| Removable Stand | Yes |
Gaming Features
1
| Specification | Value |
|---|---|
| Gaming Features | AMD FreeSync Premium ProDynamic CrosshairDynamic Shadow BoostExtreme Low Motion Blur (ELMB)GamePlusGameFast InputGameVisualNVIDIA G-Sync CompatibleVESA AdaptiveSync Display 360Hz |
Smart & Software Features
2
| Specification | Value |
|---|---|
| Operating System | Not specified |
| Smart Features | Aspect ControlAsus DisplayWidget CenterAsus OLED Care ProAura Sync Lighting EffectAI VisualCustom heatsinkKVM SwitchLow Blue LightLuminance Compensation AlgorithmNeo Proximity SensorROG OLED Anti-Flicker 2.0 technologyUniform Brightness |
Power Consumption
5
| Specification | Value |
|---|---|
| Voltage | 100 V - 120 V / 220 V - 240 V |
| Frequency | 50 Hz - 60 Hz |
| Average Consumption | 85 W |
| Standby | 0.5 W |
Certificates
1
| Specification | Value |
|---|---|
| Certificates | TÜV Rheinland Flicker-free CertifiedTÜV Rheinland Low Blue Light (Hardware Solution) |
Design, Build & Dimensions
9
| Specification | Value |
|---|---|
| Without Stand Width | 812.8 mm |
| Without Stand Height | 373.3 mm |
| Without Stand Depth | 107.9 mm |
| Without Stand Weight | 5.6 kg |
| With Stand Width | 812.8 mm |
| With Stand Height | 452.7 mm |
| With Stand Depth | 276.1 mm |
| With Stand Weight | 8.3 kg |
| Color | Black |
Operating Conditions
2
| Specification | Value |
|---|---|
| Temperature | 0 °C - 40 °C |
Frequently Asked Questions
01 Is 360 Hz on an ultrawide realistic to drive? +
In esports titles at 3440 x 1440, a high-end card can get close. In demanding single-player games you will land far lower and rely on VRR. Buy this if competitive titles are your main use; otherwise a 240 Hz ultrawide costs less and looks identical in slower games.
02 Is G-Sync properly supported, or just FreeSync? +
✓ Yes. It is certified both G-Sync Compatible and FreeSync Premium Pro, so variable refresh works properly on NVIDIA and AMD alike.
03 What is OLED Care Pro? +
Asus's bundle of burn-in countermeasures - pixel cleaning cycles, screen movement, logo dimming and similar. It does not eliminate the risk from static elements, but it manages it well for mixed gaming and desktop use.
04 Can it run my laptop on one cable? +
✓ Yes. The USB-C port delivers 90 W with DP Alt Mode, so a laptop gets picture, peripherals and charging from a single connection.
05 Why is there no audio? +
Asus left speakers out entirely on this model - not even token drivers. There is a 3.5 mm output, so headphones or desk speakers are required.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № ROG SWIFT OLED PG34WCDN