Display
38.5-inch, OLED, 3440 x 1440
38.5
Refresh Rate
40 Hz - 240 Hz
40 Hz
Brightness
275 cd/m² (peak 1300 cd/m²)
275 cd
Contrast Ratio
1500000 : 1
1500000
Overview
An 800R curve is the tightest wrap in this entire range - tighter than the 1000R BenQ uses and far tighter than the 1800R most ultrawides settle on. On a 38.5-inch OLED that is a deliberate choice: sat centrally at around 80 cm, the screen genuinely surrounds you. The panel is 3rd-generation ROG OLED with META technology, running 40-240 Hz at 0.03 ms with 1,500,000:1 contrast, a 1300 cd/m2 peak and 99% DCI-P3. Full G-Sync sits alongside FreeSync Premium Pro, and there is a 90 W USB-C port. At 98 PPI text is not its strength, the stand gives just 80 mm of height, and there are no speakers.
BrandAsusPanel TypeOLEDResolution3440 x 1440Refresh Rate40-240 Hz
Key Highlights
- 800R curve - the most aggressive wrap of any monitor here
- 38.5-inch OLED with 1,500,000:1 contrast and a 1300 cd/m2 peak
- 3rd-gen ROG OLED with META technology and 99% DCI-P3
- Full NVIDIA G-Sync alongside FreeSync Premium Pro
- 90 W USB-C and Asus OLED Care panel management
Who Should Buy the Asus ROG Swift OLED PG39WCDM
+ Best For
Sim and racing rigs
an 800R wrap at 38.5 inches fills your view
Dark-room immersion
OLED blacks with a 1300 cd/m2 peak
Either GPU brand
full G-Sync plus FreeSync Premium Pro
Laptop-and-PC desks
90 W USB-C docking
× Not Ideal For
Text-heavy work
98 PPI is low, and the curve distorts straight lines
Ergonomic desks
80 mm of height, +/-15 swivel, no pivot
Shared screens
an 800R curve only works from one seat
Desks without speakers
there is no built-in audio
Display Performance
Refresh Rate
40-240 Hz
a low 40 Hz floor and esports-grade ceiling
Response Time
0.03 ms (GtG)
instant; nothing smears
Brightness
275 cd/m2 typical / 1300 peak
strong highlights, modest full-screen
Contrast
1,500,000:1
self-lit blacks across 38.5 inches
Colour Gamut
99% DCI-P3, 135% sRGB
wide and saturated
HDR
DisplayHDR 400 True Black / HDR10
the OLED tier, graded on black level
Gaming Performance
Refresh Rate240 Hzesports refresh across a 38.5-inch ultrawide
Response Time0.03 mswith ELMB available for extra clarity
VRR / Adaptive SyncNVIDIA G-Sync + FreeSync Premium Profull G-Sync, not just Compatible
GPU Requirementa high-end card for 3440 x 1440 at high frame rates
HDR & Brightness Reality
A 1300 cd/m2 peak is among the brightest OLED figures available, and against true self-lit blacks it produces highlight contrast no LCD reaches. DisplayHDR 400 True Black is the OLED-specific tier, judged on black level rather than raw output, so the modest number understates it. The limit is 275 cd/m2 across a full white screen - so this is a dark-room panel, which suits the 800R curve anyway: nobody wraps themselves in a screen to work under a window.
Connectivity & Ports
HDMIHDMI inputsfor consoles, with ultrawide support varying by game
DisplayPortDisplayPort inputthe connection for the full 240 Hz
USB-C1 x USB-C, 90 W, DP Alt Modevideo, data and laptop charging
USB HubUSB-A downstream portsfor peripherals
Audio Out3.5 mmno built-in speakers
Desk Fit & Ergonomics
Size / Footprint38.5-inch 21:9, 890 mm wide, 800R curve9.61 kg with the stand
StandIncluded, removable6.94 kg panel alone
VESA Mount100 x 100 mmstandard arm fit
Tilt-5 to +20 degreesa comfortable range
Height Adjust80 mmthin for a panel this large
Swivel / PivotSwivel +/-15 degrees, no pivotvery limited movement
Real-World Use Cases
an 800R wrap at 38.5 inches puts mirrors in peripheral vision
OLED contrast with a 1300 cd/m2 peak
240 Hz with 0.03 ms and full G-Sync
90 W USB-C on a flagship gaming panel
Pros & Cons
Pros
- 1300 cd/m2 peak on a 38.5-inch OLED
- 800R curve for genuine sim-rig immersion
- Full NVIDIA G-Sync plus FreeSync Premium Pro
- 90 W USB-C docking with OLED Care
- 40 Hz refresh floor and 0.03 ms response
Cons
- 98 PPI the softest ultrawide density here
- 80 mm height, +/-15 swivel, no pivot
- 800R only works from one seating position
- No speakers
Score & Ratings
8.4/10
Great
Model Information
7
| Specification | Value |
|---|---|
| Brand | Asus |
| Series | ROG Swift |
| Model | ROG Swift OLED PG39WCDM |
| Model Alias | Asus PG39WCDM |
| Full Product Name | Asus ROG Swift OLED PG39WCDM |
| Model Year | 2024 |
| Available Colors | Black |
Display & Panel
7
| Specification | Value | What It Means |
|---|---|---|
| Screen Size | 38.5-inch | |
| Radius of Curvature | 800R | |
| Aspect Ratio | 21:9 | |
| Display Area | 9.55 % (percent) | |
| Panel Type | OLED | OLED - 3rd-gen ROG panel with META technology for higher brightness. |
| Panel Technology | 3rd generation ROG OLED technology panel | META technology | |
| Backlight Type | Self-emissive (no backlight — OLED) |
Resolution & Pixel Details
3
| Specification | Value | What It Means |
|---|---|---|
| Native Resolution | 3440 × 1440 | |
| Pixel Density | 98 PPI | 98 PPI - the lowest of any ultrawide here; fine for games, soft for text. |
| Pixel Pitch | 0.266 mm (millimeters) |
Picture Quality & Color
2
| Specification | Value |
|---|---|
| Panel Bit Depth | 10 bits |
| Display Colors | 1073741824 colors |
Refresh Rate, Response & Gaming
1
| Specification | Value |
|---|---|
| Refresh Rate Range | 40 Hz - 240 Hz |
Ports & Connectivity
7
| Specification | Value |
|---|---|
| HDMI Ports | 2× HDMI 2.1 |
| HDMI Version | HDMI 2.1 |
| DisplayPort Input | 1× DisplayPort 1.4 |
| DisplayPort Version | DisplayPort 1.4 |
| USB-C Video Input | 1× USB-C |
| DisplayPort Alt Mode | Yes |
| Display Stream Compression | Yes |
Audio, Camera, Network & Smart Features
1
| Specification | Value |
|---|---|
| Built-In Camera | No |
Ergonomics & Stand
5
| Specification | Value | What It Means |
|---|---|---|
| VESA Mount | 100 × 100 mm | |
| VESA Size | 100 × 100 mm | |
| Removable Stand | Yes | |
| Height Adjustment | 80 mm | 80 mm - thin for a 38.5-inch panel. |
| Height Range | 80 mm |
Dimensions, Weight & Design
2
| Specification | Value |
|---|---|
| Weight With Stand | 9.61 kg |
| Weight Without Stand | 6.94 kg |
Power & Operating Conditions
5
| Specification | Value |
|---|---|
| Power Input | 100–240V |
| AC Frequency | 50/60Hz |
| Typical Power Consumption | 35W |
| Average Power Consumption | 35W |
| Sleep Consumption | 0.3W |
Frequently Asked Questions
01 How aggressive is an 800R curve really? +
Very. It follows an 80 cm radius, meaning it is designed to be viewed from roughly that distance, dead centre. Sat there it is genuinely enveloping; sat further back or off to one side, straight lines bend visibly. It is the most opinionated curve in this range.
02 Is this full G-Sync or just G-Sync Compatible? +
Full G-Sync, which means an NVIDIA hardware module rather than software certification. In practice both work well now, but full G-Sync typically handles variable overdrive more consistently across the refresh range.
03 Is 98 PPI a problem? +
For gaming, no. For text, yes - 3440 x 1440 stretched across 38.5 inches is the lowest density of any ultrawide here. If this is your only screen and you write for a living, look at a 3840 x 1600 panel instead.
04 What is META technology on this OLED? +
It is LG's OLED enhancement using micro lens arrays to direct more light forward, which is how a 38.5-inch OLED reaches a 1300 cd/m2 peak. It is the reason this is brighter than earlier OLED ultrawides.
05 Why only 80 mm of height adjustment? +
It is the recurring weak point on Asus's OLED gaming stands - the PG32UCDM Gen 3 has the same figure. On a 9.61 kg panel, a VESA arm is worth budgeting for.
Reviews
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SHEET № ROG SWIFT OLED PG39WCDM