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

ASUS

ASUS ROG Astral GeForce RTX 5080 16GB GDDR7 graphics card

SKU CH-19A4-5NNJE

16 GB GDDR7 GPU with 10752 CUDA cores, PCIe 5.0 x16, DLSS 4.0, two HDMI 2.1b and three DisplayPort 2.1a outputs for 7680 x 4320 resolution

  • 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 fuels 4K gaming
  • 10752 CUDA cores accelerate ray-tracing and AI workloads
  • DLSS 4.0 upscales frames with neural rendering
  • PCI Express 5.0 x16 doubles host bandwidth
  • HDMI 2.1b and DisplayPort 2.1a drive 7680×4320 displays

16GB GDDR7 graphics card

The ASUS ROG Astral GeForce RTX 5080 delivers 16GB of GDDR7 memory across a 256-bit interface. It targets enthusiasts building high-end systems for 4K gaming and professional creative workloads. The Blackwell architecture provides 10752 CUDA cores for parallel compute tasks. A PCI Express 5.0 x16 link supplies full bandwidth to modern platforms.

Memory capacity and bandwidth headroom

The 16GB frame buffer handles 4K textures, large 3D scenes and multi-application workflows without paging. At 30 Gbps effective clock the 256-bit bus moves data quickly for rasterisation and ray tracing. Workloads exceeding 16GB will spill to system memory and reduce throughput. The card supports DirectX 12 Ultimate and OpenGL 4.6 for current API features.

PCI Express 5.0 x16 interface

The x16 Gen 5 link is the single specification that decides platform compatibility. It requires a motherboard with a PCIe 5.0 slot to avoid bandwidth limitation. Older PCIe 4.0 or 3.0 slots will operate at reduced throughput. Verify your platform supports PCIe 5.0 x16 before purchase.

Highlights

  • 16 GB GDDR7 memory at 30 Gbps fuels 4K gaming
  • 10752 CUDA cores accelerate ray-tracing and AI workloads
  • DLSS 4.0 upscales frames with neural rendering
  • PCI Express 5.0 x16 doubles host bandwidth
  • HDMI 2.1b and DisplayPort 2.1a drive 7680×4320 displays

Specifications

BrandASUS
SeriesROG Astral
ModelROG-ASTRAL-RTX5080-O16G-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

Will the PCI Express 5.0 x16 interface on the ROG Astral RTX 5080 work with my older motherboard that only has PCIe 4.0 slots?

Yes, the card is backward compatible and will run at PCIe 4.0 x16 speeds on a 4.0 motherboard. The 10752 CUDA cores and 16GB GDDR7 memory still deliver full compute performance, though peak bandwidth is limited to the slot generation.

How can I verify the card is running at the advertised 30 Gbps effective memory clock and 256-bit bus after installation?

Open GPU-Z or the NVIDIA control panel and confirm the memory interface reads 256-bit with a 30 Gbps effective clock. In games, enable the DLSS 4.0 overlay to see frame-generation active, proving the Blackwell architecture is functioning.

Does the box include any power adapters for the 12VHPWR connector, or do I need to buy a native ATX 3.0 power supply separately?

The package contains the graphics card, a quick-install guide, and a 12VHPWR-to-dual-8-pin adapter cable. If your power supply already has a native 12VHPWR port you can plug directly; otherwise use the included adapter with two separate 8-pin cables from your PSU.

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