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ASUS ROG Strix GeForce RTX 3090 triple-fan graphics card in matte black with silver accents

ASUS

ASUS STRIX-RTX3090-O24G-G graphics card

SKU CH-QSTH-1K74R MPN STRIX-RTX3090-O24G-G

Refurbished GeForce RTX 3090 with 24GB GDDR6X, 10496 CUDA cores and triple-fan cooling for 4K gaming and creative workloads

  • InterfacePCI Express 4.0
  • Chipset ManufacturerNVIDIA
  • GPU SeriesNVIDIA GeForce RTX 30 Series
  • GPUGeForce RTX 3090
  • Core Clock1890 MHz
  • Boost ClockOC Mode - 1890 MHz Gaming Mode - 1860 MHz
  • 24 GB GDDR6X memory handles 8K textures and large 3D scenes
  • 10496 CUDA cores accelerate rendering and compute workloads
  • PCI Express 4.0 interface delivers high bandwidth to the CPU
  • Triple-fan cooler keeps the 750 W GPU stable under sustained load
  • HDMI 2.1 and DisplayPort 1.4a drive four 8K displays simultaneously

24GB GDDR6X graphics card

The ASUS ROG Strix GeForce RTX 3090 delivers 24GB of GDDR6X memory across a 384-bit interface with 10496 CUDA cores. It targets creators and enthusiasts running 7680 x 4320 workloads or multi-monitor arrays. The PCI Express 4.0 interface supports high-bandwidth data transfer for modern platforms. Boost clocks reach 1890 MHz in OC mode and 1860 MHz in Gaming mode.

PCIe 4.0 slot and 850W PSU required

Verify your motherboard provides a PCI Express 4.0 slot with sufficient physical clearance for a triple-slot design. The card draws power through three 8-pin connectors and the manufacturer recommends an 850W power supply. Ensure your chassis airflow can accommodate the card length and exhaust layout. HDCP 2.3 compliance is needed for protected 4K content playback.

750W TDP with triple-fan cooling

The thermal design power is rated at 750W, so sustained loads will move significant heat through the triple-fan cooler. Expect audible fan ramp under full compute or gaming scenarios while idle noise remains low. Power draw scales with the 1890 MHz boost clock and 19.5 Gbps memory speed. Adequate case ventilation is essential to maintain stable temperatures during extended sessions.

Highlights

  • 24 GB GDDR6X memory handles 8K textures and large 3D scenes
  • 10496 CUDA cores accelerate rendering and compute workloads
  • PCI Express 4.0 interface delivers high bandwidth to the CPU
  • Triple-fan cooler keeps the 750 W GPU stable under sustained load
  • HDMI 2.1 and DisplayPort 1.4a drive four 8K displays simultaneously

Specifications

BrandASUS
SeriesROG Strix
ModelROG-STRIX-RTX3090-O24G-GAMING
InterfacePCI Express 4.0
Chipset ManufacturerNVIDIA
GPU SeriesNVIDIA GeForce RTX 30 Series
GPUGeForce RTX 3090
Core Clock1890 MHz
Boost ClockOC Mode - 1890 MHz
Gaming Mode - 1860 MHz
CUDA Cores10496
Effective Memory Clock19.5 Gbps
Memory Size24GB
Memory Interface384-Bit
Memory TypeGDDR6X
DirectXDirectX 12
OpenGLOpenGL 4.6
Multi-Monitor Support4
HDMI2 x HDMI 2.1
DisplayPort3 x DisplayPort 1.4a
Max Resolution7680 x 4320
SLI SupportSLI Ready
Virtual Reality ReadyYes
CoolerTriple Fans
Thermal Design Power750W
System RequirementsRecommended PSU: 850W
Recommended PSU Wattage850W
Power Connector3 x 8-Pin
HDCP Ready2.3
FeaturesNVIDIA Ampere Streaming Multiprocessors: The building blocks for the world's fastest, most efficient GPU, the all-new Ampere SM brings 2X the FP32 throughput and improved power efficiency.
2nd Generation RT Cores: Experience 2X the throughput of 1st gen RT Cores, plus concurrent RT and shading for a whole new level of ray tracing performance.
3rd Generation Tensor Cores: Get up to 2X the throughput with structural sparsity and advanced AI algorithms such as DLSS. Now with support for up to 8K resolution, these cores deliver a massive boost in game performance and all-new AI capabilit
Max GPU Length319 mm
Card Dimensions (L x H)12.53" x 5.51"
Slot Width2.9-slot
Shipping weight2.95 kg
Package size445 × 292 × 140 mm

Questions about this item

What comes in the box and what must I buy separately?

The card includes the GPU with a triple-fan cooler, 2 HDMI 2.1 ports and 3 DisplayPort 1.4a outputs. You must supply a PSU of at least 850 W and three 8-pin PCIe power cables.

Should I pick the OC mode or the Gaming mode for my build?

OC mode runs the boost clock at 1890 MHz while Gaming mode runs at 1860 MHz. Choose OC mode if your cooling and power delivery can sustain the higher frequency; otherwise Gaming mode offers a lower thermal target.

What does the 19.5 Gbps memory speed mean for 4K gaming?

The 24 GB GDDR6X frame buffer on a 384-bit bus at 19.5 Gbps delivers high bandwidth for 4K textures and multi-monitor setups up to 7680 x 4320 resolution.

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