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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

  • Graphics processorGeForce RTX 5080
  • Memory capacity16 GB
  • Interface typePCI Express 5.0 x16
  • CUDA core count10752
  • Highest resolution7680 × 4320
  • Type of memoryGDDR7
  • 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.

How it compares

Measured against everything we stock in Desktop GPUs & Video Cards, at today’s prices. Recalculated every night.

Price $2,871.99
Pricier than about 92% of the 4,285 comparable items (median $354.99).
Memory capacity 16 GB
Higher than about 80% of the 3,563 comparable items (median 8 GB).
CUDA core count 10752
Higher than about 90% of the 1,946 comparable items (median 4,352).

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Specifications

Product
Brand nameASUS
Product lineROG Astral
Model nameROG-ASTRAL-RTX5080-16G-WHITE
Processor
TDP rating360 W
Memory
Type of memoryGDDR7
Display
Highest resolution7680 × 4320
Graphics
Graphics processorGeForce RTX 5080
Memory capacity16 GB
CUDA core count10752
Chipset makerNVIDIA
Graphics seriesNVIDIA GeForce RTX 50 Series
GPU architectureBlackwell
Effective memory speed30 Gbit/s
Memory bus width256-Bit
DirectX support12 Ultimate
OpenGL support4.6
Supported displays4
CrossFireX compatibilityNo
Multi-GPU supportNo
Audio & video
HDCP supportYes
Ports & slots
Interface typePCI Express 5.0 x16
HDMI ports2 x HDMI 2.1b
DisplayPort connectors3 x DisplayPort 2.1a
Power
Recommended power supply850 W
Power input connector1 × 16-Pin
Size & build
Max graphics card length358 mm
Card size14.1 × 5.9 × 3 in
Slots occupied3.8 Slots

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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