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ASUS ROG Astral LC GeForce RTX 5090 liquid-cooled graphics card with silver metal shroud and integrated radiator

ASUS

ASUS ROG Astral LC GeForce RTX 5090 32GB GDDR7 OC Edition graphics card

SKU CH-16Q6-SGK99

Liquid-cooled GeForce RTX 5090 with 32 GB GDDR7, 21760 CUDA cores and PCIe 5.0 for 4K high-refresh gaming

  • InterfacePCI Express 5.0
  • Chipset ManufacturerNVIDIA
  • GPU SeriesNVIDIA GeForce RTX 50 Series
  • GPUGeForce RTX 5090
  • Game Clock2467 MHz
  • Boost Clock2437 MHz
  • 32 GB GDDR7 memory feeds 21 760 CUDA cores for heavy workloads
  • 28 Gbps effective memory clock moves data across a 512-bit bus
  • PCI Express 5.0 interface doubles link bandwidth over prior versions
  • DLSS 4.0 upscaling and frame generation lift frame rates in supported titles
  • 2 437 MHz boost clock sustains high frequency under load

ROG Astral LC RTX 5090 32GB

This graphics card pairs the NVIDIA GeForce RTX 5090 GPU with 32GB of GDDR7 memory on a 512-bit interface. It targets 4K and 8K gaming workloads as well as compute-heavy creative tasks. The board runs at a 2467 MHz game clock and a 2437 MHz boost clock across 21760 CUDA cores. PCI Express 5.0 provides the system link.

DLSS 4.0 and display outputs

DLSS 4.0 upscaling and frame generation are supported in compatible titles, raising frame rates without native resolution rendering. The rear bracket supplies two native HDMI 2.1b ports and three native DisplayPort 2.1a connectors. Up to four monitors can be driven simultaneously at a maximum resolution of 7680 x 4320. OpenGL 4.6 and VR readiness are also included.

Liquid-cooled installation notes

The card uses a closed-loop liquid cooler, so case clearance for the radiator and mounting points is required. Ensure the power supply delivers sufficient wattage and the correct PCIe connectors for the 5090 class. Route tubes without sharp bends to avoid flow restriction. Verify motherboard PCI Express 5.0 slot compatibility before fitting.

Points forts

  • 32 GB GDDR7 memory feeds 21 760 CUDA cores for heavy workloads
  • 28 Gbps effective memory clock moves data across a 512-bit bus
  • PCI Express 5.0 interface doubles link bandwidth over prior versions
  • DLSS 4.0 upscaling and frame generation lift frame rates in supported titles
  • 2 437 MHz boost clock sustains high frequency under load

Caractéristiques

BrandASUS
SeriesROG Astral LC
ModelROG-ASTRAL-LC RTX5090-O32G-GAMING
InterfacePCI Express 5.0
Chipset ManufacturerNVIDIA
GPU SeriesNVIDIA GeForce RTX 50 Series
GPUGeForce RTX 5090
Game Clock2467 MHz
Boost Clock2437 MHz
CUDA Cores21760
Effective Memory Clock28000 MHz (28 Gbps)
Memory Size32GB
Memory Interface512-Bit
Memory TypeGDDR7
OpenGLOpenGL 4.6
Multi-Monitor Support4
HDMI2 x (Native)HDMI 2.1b
DisplayPort3 x (Native)DisplayPort 2.1a
Max Resolution7680 x 4320
Virtual Reality ReadyYes
CoolerLiquid Cooler
Thermal Design Power575W
Recommended PSU Wattage1000W
Power Connector1 x 16-Pin
HDCP ReadyYes
Max GPU Length288.46 MM
Card Dimensions (L x H)11.3*6*1.88 in
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 4)

Questions sur cet article

Will the 28 Gbps GDDR7 memory need active cooling maintenance later?

The memory runs at 28000 MHz on a 512-bit bus and is cooled by the factory-sealed liquid loop, which requires no user refilling or pump service.

Which limit appears first during sustained loads, the 2437 MHz boost clock or the power target?

The card boosts to 2437 MHz until the power limit or thermal ceiling is reached; typical sustained clocks settle below that peak once the liquid loop saturates.

How loud and hot does the liquid cooling get when the 21760 CUDA cores run all day?

The closed-loop radiator keeps core temperatures lower than air designs, and pump noise stays constant because fan speed scales with coolant temperature, not instantaneous load.

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