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White triple-fan graphics card with silver backplate and ROG branding

ASUS

ASUS ROG Astral GeForce RTX 5080 16GB GDDR7 White graphics card

SKU CH-NM3X-Y0XJC

A 16 GB GDDR7 graphics card with 10752 CUDA cores, PCI Express 5.0 x16 and DLSS 4.0 for 4K gaming and creative workloads

  • InterfacePCI Express 5.0 x16
  • Chipset ManufacturerNVIDIA
  • GPU SeriesNVIDIA GeForce RTX 50 Series
  • GPUGeForce RTX 5080
  • ArchitectureBlackwell
  • CUDA Cores10752
  • 16 GB GDDR7 memory at 30 Gbps feeds high-resolution textures
  • 10752 CUDA cores accelerate compute-heavy workloads
  • PCI Express 5.0 x16 interface doubles host bandwidth
  • DLSS 4.0 upscaling sharpens frames with AI
  • HDMI 2.1b and DisplayPort 2.1a drive 7680 x 4320 displays

ROG Astral RTX 5080 for 4K gaming

The ROG Astral GeForce RTX 5080 is a PCI Express 5.0 graphics card built on the Blackwell architecture. It delivers 10752 CUDA cores and 16GB of GDDR7 memory on a 256-bit bus running at 30 Gbps. The card targets enthusiasts who want high frame rates at 7680 x 4320 resolution with DLSS 4.0 upscaling. Four simultaneous displays are supported through modern video outputs.

Thermals noise and power in daily use

The triple-slot cooler uses a vapor chamber and three axial-tech fans to move heat away from the GPU and memory. A zero-RPM mode stops the fans entirely during light desktop work, keeping acoustics near silent. Under sustained 4K loads the fan curve ramps gradually, maintaining stable core clocks without abrupt speed spikes. The 12VHPWR connector feeds the board efficiently through a 16-pin power stage design.

Build integration and system headroom

The card occupies three expansion slots and requires a case with sufficient length and airflow clearance for the 12VHPWR cable bend radius. A robust metal backplate adds structural rigidity and protects the PCB during transport or vertical mounting. Two HDMI 2.1b and three DisplayPort 2.1a connectors free up motherboard video outputs for capture cards or secondary GPUs. PCI Express 5.0 x16 bandwidth removes bus bottlenecks for future storage or AI accelerators.

Highlights

  • 16 GB GDDR7 memory at 30 Gbps feeds high-resolution textures
  • 10752 CUDA cores accelerate compute-heavy workloads
  • PCI Express 5.0 x16 interface doubles host bandwidth
  • DLSS 4.0 upscaling sharpens frames with AI
  • HDMI 2.1b and DisplayPort 2.1a drive 7680 x 4320 displays

Specifications

BrandASUS
SeriesROG Astral
ModelROG-ASTRAL-RTX5080-16G-WHITE
InterfacePCI Express 5.0 x16
Chipset ManufacturerNVIDIA
GPU SeriesNVIDIA GeForce RTX 50 Series
GPUGeForce RTX 5080
ArchitectureBlackwell
CUDA Cores10752
Effective Memory Clock30 Gbps
Memory Size16GB
Memory Interface256-Bit
Memory TypeGDDR7
DirectXDirectX 12 Ultimate
OpenGLOpenGL 4.6
Multi-Monitor Support4
HDMI2 x HDMI 2.1b
DisplayPort3 x DisplayPort 2.1a
Max Resolution7680 x 4320
CrossFireX SupportNo
SLI SupportNo
Thermal Design Power360W
Recommended PSU Wattage850W
Power Connector1 x 16-Pin
HDCP ReadyYes
Max GPU Length358 mm
Card Dimensions (L x H)14.1 x 5.9 x 3 inch
Slot Width3.8 Slots
Package Contents1 x Speedsetup Manual
1 x ROG Graphics Card Holder
1 x ROG Velcro Hook & Loop
1 x ROG Magnet
1 x ROG Graphics Card Keycap
1 x ROG PCB Ruler
1 x Thank You Card
1 x Adapter Cable (1 to 3)?

Questions about this item

How do I install the ASUS ROG Astral RTX 5080 into a PCI Express 5.0 x16 slot and which step do people get wrong?

Align the card with the full-length PCI Express 5.0 x16 slot, press down until the retention latch clicks, then connect the required power cables from the PSU; the step often missed is ensuring the latch fully engages before tightening the rear bracket screw.

What maintenance or replacement will the 10752 CUDA Cores and GDDR7 memory need later?

No scheduled maintenance is required for the CUDA Cores or GDDR7 memory; periodic dust removal from the heatsink and fans with compressed air keeps thermals stable over the card's lifespan.

What limit appears first on the 256-Bit GDDR7 interface during sustained 4K workloads?

The 256-Bit memory bus and 30 Gbps GDDR7 clock set the bandwidth ceiling; in extended 4K rendering the memory throughput saturates before the GPU compute units reach their maximum utilisation.

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