MSI MPG 321URX QD-OLED 32″ 4K Gaming Monitor – 240Hz / 0.03ms
MSI MPG 321URX QD-OLED Gaming Monitor
- 31.5-inch 4K UHD 3840 × 2160 QD-OLED gaming monitor
- 240Hz refresh rate with ultra-fast 0.03ms GTG response time
- 99% DCI-P3, 97% Adobe RGB, 138% sRGB and 10-bit color
- VESA DisplayHDR True Black 400 with up to 1,000-nit HDR peak brightness
- NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro
- MSI OLED Care 2.0 with graphene film, custom heatsink and fanless cooling
- DisplayPort 1.4a, dual HDMI 2.1 and USB-C with 90W Power Delivery
- KVM, Gaming Intelligence, AI Vision, Smart Crosshair and Mystic Light

MSI MPG 321URX QD-OLED
The MSI MPG 321URX QD-OLED combines a 31.5-inch third-generation QD-OLED panel with native 3840 × 2160 4K UHD resolution, an ultra-high 240Hz refresh rate, and a rapid 0.03ms GTG response time.
Its 99% DCI-P3 color coverage, true 10-bit output, DisplayHDR True Black 400 certification, OLED Care 2.0, fanless thermal design, KVM, full-bandwidth HDMI 2.1 and USB-C with 90W Power Delivery make it suitable for premium PC gaming, console gaming and high-end desktop setups.
Premium MPG Design



3840 × 2160
Maximum Refresh Rate
GTG Response Time
DCI-P3 Coverage

Third-Generation 4K QD-OLED
The 31.5-inch QD-OLED panel delivers native 3840 × 2160 UHD resolution with a fine 0.1814mm pixel pitch and a flat 16:9 format.
MSI's newer QD-OLED sub-pixel arrangement is designed to provide sharper images, finer details and clearer text while retaining the deep blacks and pixel-level light control of OLED technology.
240Hz at 4K
The MPG 321URX QD-OLED operates at up to 240Hz at its native 3840 × 2160 resolution through DisplayPort, HDMI 2.1 and USB-C DisplayPort Alt Mode.
Combined with a 0.03ms GTG response time, the high refresh rate is designed for fast-moving genres such as competitive shooters, racing, fighting and sports games.

DisplayHDR True Black 400
Pixel-level OLED dimming provides deep black reproduction and VESA DisplayHDR True Black 400 certification.
Up to 1,000 Nits HDR
MSI specifies HDR peak brightness of up to 1,000 nits for compatible HDR highlights.
1,500,000:1 Contrast
The self-emissive QD-OLED panel carries a typical contrast ratio of 1,500,000:1.
QD Premium Color
The MPG 321URX QD-OLED covers approximately 99% DCI-P3, 97% Adobe RGB and 138% sRGB while displaying approximately 1.07 billion colors through true 10-bit output.
MSI also specifies factory-tuned Delta E ≤ 2 color accuracy, giving the panel strong color performance for gaming, multimedia and content-oriented desktop use.
Anti-Reflection Surface
The panel uses an anti-reflection surface coating designed to reduce distracting glare while preserving QD-OLED color and black levels.
Hardware Blue Light Reduction
MSI's hardware-level blue-light reduction is integrated into the panel and is designed to reduce higher-energy blue light without applying a strong yellow color filter.
G-SYNC Compatible & FreeSync Premium Pro
Variable refresh rate support includes NVIDIA G-SYNC Compatible certification and AMD FreeSync Premium Pro.
The monitor's VRR operating range extends from 48Hz to 240Hz, allowing compatible graphics hardware to synchronize rendered frames with the display refresh rate.

OLED Care 2.0
MSI OLED Care 2.0 provides multiple panel-protection mechanisms designed to reduce the risk of image retention and OLED burn-in.
Protection functions include Pixel Shift, Panel Protect, Static Screen Detection, Boundary Detection, Taskbar Detection and Multi-Logo Detection.
Graphene Film & Custom Heatsink
The QD-OLED panel uses a graphene film to transfer heat away from the panel together with a custom passive heatsink.
This thermal design eliminates the need for an active cooling fan, allowing the monitor to operate with a fanless cooling system.
Built-In KVM
The integrated KVM function allows compatible computers to share a single keyboard and mouse through the monitor.
This is particularly useful when switching between a gaming desktop and another connected system without maintaining separate peripheral sets.

MSI Gaming Intelligence
The Gaming Intelligence app allows supported monitor settings to be adjusted through Windows using a keyboard and mouse instead of navigating only through the physical OSD.
Supported gaming tools include Smart Crosshair, Optix Scope and AI Vision, while firmware can be updated through the monitor's USB and DisplayPort connections.
Smart Crosshair
The onscreen crosshair can automatically change color to maintain visibility against different backgrounds.
Optix Scope
Built-in screen magnification provides multiple zoom stages that can be activated through supported shortcut controls.
AI Vision
AI Vision can reveal additional detail in darker areas while dynamically enhancing compatible image brightness and color.

Mystic Light RGB
Integrated Mystic Light adds ambient RGB lighting to the rear of the monitor.
The lighting can be coordinated with compatible MSI Mystic Light-enabled hardware to create a more unified gaming setup.

Premium Display Connectivity
The MPG 321URX provides DisplayPort 1.4a, two HDMI 2.1 inputs and USB-C with DisplayPort Alt Mode, allowing compatible sources to output 3840 × 2160 at up to 240Hz.
USB-C Display + 90W Power Delivery
The USB-C connection supports DisplayPort Alt Mode for compatible video sources at up to 4K 240Hz.
It can also provide up to 90W Power Delivery to compatible laptops and other USB-C devices, reducing the number of cables required in supported desktop setups.

Full-Bandwidth HDMI 2.1
Both HDMI 2.1 ports provide up to 48Gbps bandwidth and support 3840 × 2160 output at up to 240Hz from compatible PC hardware.
MSI Console Mode supports compatible next-generation console features including 4K 120Hz, VRR, ALLM and HDMI CEC functionality.

Integrated USB Hub
The monitor includes two USB 2.0 Type-A downstream ports and one USB 2.0 Type-B upstream connection.
Connecting the USB upstream cable enables supported USB peripherals as well as monitor interaction through MSI Gaming Intelligence.
Ergonomic Adjustable Stand
Height Adjustment
Tilt
Swivel
Pivot
The display also supports standard 100 × 100mm VESA mounting and includes a Kensington security lock.
External Audio Ready
The MSI MPG 321URX QD-OLED does not include built-in speakers. A headphone output is provided for compatible headphones, headsets or external audio equipment.
What's in the Box
- MSI MPG 321URX QD-OLED Monitor
- Monitor Stand
- Power Cable
- Standard Accessories
Complete Your Gaming Setup
- Gaming PCs - explore systems for 4K high-refresh-rate gaming
- Gaming Mice - add responsive control for competitive gaming
- Gaming Keyboards - complete your desktop controls
- Gaming Headsets - add gaming audio and communication
- Gaming Monitors - browse more high-refresh-rate displays
Frequently Asked Questions
What resolution and refresh rate does the MSI MPG 321URX QD-OLED support?
The MSI MPG 321URX QD-OLED has a native 3840 × 2160 4K UHD resolution and supports a maximum refresh rate of 240Hz.
What panel does the MSI MPG 321URX QD-OLED use?
The MSI MPG 321URX QD-OLED uses a 31.5-inch flat QD-OLED panel with an anti-reflection surface.
What is the response time of the MSI MPG 321URX QD-OLED?
The MSI MPG 321URX QD-OLED has a 0.03ms GTG response time.
Does the MSI MPG 321URX QD-OLED support G-SYNC and FreeSync?
Yes. The monitor is NVIDIA G-SYNC Compatible and supports AMD FreeSync Premium Pro.
Does the MSI MPG 321URX QD-OLED support USB-C video and charging?
Yes. Its USB-C port supports DisplayPort Alt Mode for up to 4K 240Hz and provides up to 90W Power Delivery to compatible devices.
Does the MSI MPG 321URX QD-OLED have a KVM switch?
Yes. The built-in KVM allows compatible connected systems to share one keyboard and mouse through the monitor.
Does the MSI MPG 321URX QD-OLED have built-in speakers?
No. The MSI MPG 321URX QD-OLED does not include built-in speakers, but it does provide a headphone output.
What warranty does the MSI MPG 321URX QD-OLED have?
MSI lists a 3-year warranty for the MPG 321URX QD-OLED, including OLED panel burn-in coverage.
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Technical Specifications
| Brand | MSI |
| Series | MPG |
| Model | MPG 321URX QD-OLED |
| SKU / Part Number | 9S6-3DD29A-054 |
| Item Number | NS040388 |
| Color | Black |
| Product Type | QD-OLED Gaming Monitor |
| Screen Size | 31.5 Inches / 80cm |
| Curvature | Flat |
| Panel Type | QD-OLED |
| Resolution | 3840 × 2160 4K UHD |
| Aspect Ratio | 16:9 |
| Active Display Area | 699.48 × 394.73mm |
| Pixel Pitch | 0.1814 × 0.1814mm |
| Surface Treatment | Anti-Reflection |
| Refresh Rate | 240Hz |
| VRR Range | 48–240Hz |
| Response Time | 0.03ms GTG |
| Typical Brightness | 250 Nits |
| HDR Peak Brightness | Up to 1,000 Nits |
| Contrast Ratio | 1,500,000:1 Typical |
| Viewing Angle | 178° / 178° |
| Display Colors | 1.07 Billion / 10-Bit |
| DCI-P3 Coverage | 99% |
| Adobe RGB Coverage | 97% |
| sRGB Coverage | 138% |
| Color Accuracy | Delta E ≤ 2 |
| HDR | VESA DisplayHDR True Black 400 |
| Motion Certification | VESA ClearMR 13000 |
| Adaptive Sync | NVIDIA G-SYNC Compatible / AMD FreeSync Premium Pro |
| OLED Protection | MSI OLED Care 2.0 |
| OLED Care Functions | Pixel Shift / Panel Protect / Static Screen Detection / Boundary Detection / Taskbar Detection / Multi-Logo Detection |
| Cooling | Graphene Film / Custom Passive Heatsink / Fanless Design |
| KVM | Yes |
| Gaming Features | Gaming Intelligence / Smart Crosshair / Optix Scope / AI Vision / Console Mode |
| Lighting | Mystic Light RGB |
| DisplayPort | 1 × DisplayPort 1.4a |
| HDMI | 2 × HDMI 2.1 / Up to 48Gbps / 4K 240Hz |
| USB-C | 1 × USB-C with DisplayPort Alt Mode |
| USB-C Power Delivery | Up to 90W |
| USB Type-A | 2 × USB 2.0 Type-A |
| USB Type-B | 1 × USB 2.0 Type-B |
| Audio Output | 1 × Headphone-Out |
| Built-In Speakers | No |
| Height Adjustment | 0–110mm |
| Tilt | -5° to 15° |
| Swivel | -30° to 30° |
| Pivot | -10° to 10° |
| VESA Mount | 100 × 100mm |
| Kensington Lock | Yes |
| Dimensions with Stand | 718 × 242 × 483mm |
| Dimensions without Stand | 718 × 69 × 418mm |
| Weight with Stand | 9.6kg |
| Weight without Stand | 6.7kg |
| Gross Weight | 12.3kg |
| Power Input | 100–240V, 50/60Hz |
| Package Contents | Monitor / Stand / Power Cable / Standard Accessories |
| Warranty | 3 Years, Including OLED Panel Burn-In |
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