MSI MPG GUNGNIR 300R AIRFLOW Mid-Tower PC Case — Supports E-ATX/ATX/Micro-ATX/Mini-ITX, Up to 360mm GPU, 175mm CPU Cooler Height, 10 Fan Mounts with 4x 120mm ARGB PWM Fans Included, Dual 360mm Radiator Support, USB 3.2 Gen 2x2 Type-C, Tempered Glass

General Information

The MSI MPG GUNGNIR 300R AIRFLOW is a mid-tower PC case designed for high airflow , versatile hardware support , and stylish ARGB lighting integration . It supports E-ATX, ATX, Micro-ATX, and Mini-ITX motherboards , making it suitable for full-size builds with long GPUs and tall CPU coolers .

With excellent cooling capabilities , this case is ideal for high-end gaming rigs , content creation systems , and workstations that require efficient thermal management and spacious internal layout . The front USB-C Gen 2x2 port adds modern connectivity , while the tempered glass side panel and perforated front panel enhance both aesthetics and ventilation .

Case Design & Dimensions

• Dimensions:
  • 505 x 235 x 510 mm (L x W x H) – spacious mid-tower design
  • Height: 510 mm – accommodates tall components
  • Width: 235 mm – standard for mid-tower cases
  • Length: 505 mm – fits most full-size GPUs and large power supplies
• Weight:
  • Net weight: ~10.9 kg
  • Gross weight: ~13.2 kg
• Build Material:
  • Combination of steel and plastic for durability and aesthetics
  • Tempered glass side panel (3mm thick) for visual appeal and easy component visibility
  • Perforated front panel for enhanced airflow

Motherboard Support

• Supported Form Factors:
  • E-ATX (up to 280 x 305 mm)
  • ATX
  • Micro-ATX
  • Mini-ITX
• Mounting Points:
  • Multiple mounting holes for secure motherboard installation
  • Sufficient space for large E-ATX boards

GPU Support

• Maximum GPU Length: Up to 360 mm – ideal for long, high-end graphics cards
• Fan Support:
  • 4 pre-installed 120mm ARGB PWM fans (3 front, 1 rear)
  • Total fan support : Up to 10 fans for customizable airflow
• Radiator Support:
  • Dual 360mm radiators at front and top
  • Supports 120/140/240/280mm radiators on front, top, and rear
• Cooling Flexibility:
  • Push-pull fan configurations supported
  • Magnetic dust filters on top and front panels for cleaner system operation

CPU Cooler Support

• Max CPU Cooler Height: Up to 175 mm – suitable for large air coolers and AIO liquid coolers
• Clearance:
  • Ample vertical space for tower coolers
  • Compatible with 240mm AIO coolers and tall air coolers

Storage & Drive Bays

• Drive Bays:
  • 6 x 2.5” SSD bays
  • 2 shared 2.5”/3.5” drive bays – flexible storage options
• Support for M.2 SSDs:
  • Multiple M.2 slots available on motherboard and inside the case
  • Vertical GPU bracket with pre-installed fans for M.2 SSD cooling
• SSD Mounting Options:
  • Front, top, and rear for additional storage expansion

Expansion Slots

• Number of Slots: 7 expansion slots – supports multiple PCIe cards and add-on peripherals
• Compatibility:
  • Suitable for multi-GPU setups and high-end sound cards or capture devices
  • Space for dual-slot GPUs and longer cards

Power Supply Support

• PSU Compatibility:
  • Standard ATX power supplies
  • Max PSU length : Above 220 mm – accommodates full-tower PSUs
• PSU Placement:
  • Bottom-mounted for optimized airflow and cable management
  • Spacious interior for standard and modular PSUs

I/O Panel

• Ports:
  • 2 x USB 3.2 Gen 1 Type-A
  • 1 x USB 3.2 Gen 2x2 Type-C (20 Gbps) – fast data transfer and device charging
  • 1 x 3.5mm audio jack (mic-in / line-out)
  • LED switch, Reset, and Power buttons for easy access
• USB-C Port:
  • 20 Gbps speed – ideal for external drives, displays, and peripherals
  • Supports USB 3.2 Gen 2x2 for high-speed data transfers

Cooling Features

• Airflow Design:
  • Front, top, and rear fan mounts for balanced airflow
  • Magnetic dust filters on front and top for dust resistance
• Fan Control:
  • ARGB fan headers for RGB lighting control
  • PWM fan support for temperature-based fan speed control
• Fan Mounting:
  • 3 front 120mm fans
  • 1 rear 120mm fan
  • Additional fan positions for custom cooling setups
• Cable Management:
  • Cable routing channels for neat internal cabling
  • Spacious interior for clean build

Special Features

• Vertical GPU Bracket:
  • Includes pre-installed fans for M.2 SSD cooling
  • Allows for vertical GPU mounting with omnidirectional adjustment
• Tempered Glass Window:
  • 3mm thickness for sturdy build and showcase of internal components
  • Compatible with RGB lighting and lighting effects
• Omnidirectional Graphics Card Holder:
  • Adjusts to fit thick and long GPUs
  • Ensures stable GPU mounting
• Internal Space:
  • Large enough for high-end hardware
  • Good cable management and component clearance

Design & Build Quality

• Material:
  • Steel and plastic construction for durability and aesthetic appeal
  • Reinforced steel chassis for rigidity and stability
• Panel Design:
  • Perforated front panel for maximum airflow
  • Tempered glass side panel for viewing internal components
• Cable Management:
  • Cable routing holes and internal compartments
  • Pre-mounted I/O shield for easy installation
• Weight:
  • 10.9 kg net – sturdy and durable build