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Triple-fan graphics card with vented diecast shroud and backplate

ASUS

ASUS ROG Strix GeForce RTX 4090 OC Edition graphics card

SKU CH-RCH0-S8G7T

Delivers 24 GB GDDR6X on a 384-bit bus with triple Axial-tech fans and a 3.5-slot vapor-chamber cooler for 4K and 8K gaming

  • Graphics processorGeForce RTX 4090
  • Memory capacity24 GB
  • Interface typePCI Express 4.0
  • Highest resolution7680 × 4320
  • Boost frequency2640 MHz
  • Type of memoryGDDR6X
  • 24 GB GDDR6X memory handles 8K textures and heavy workloads
  • Triple Axial-tech fans deliver 23 % more airflow for cooler operation
  • Patented vapor chamber with milled heatspreader lowers GPU temperatures under load
  • 5-slot design with massive fin array maximises heat dissipation
  • Factory overclocked to 2640 MHz boost clock for higher frame rates

ASUS ROG Strix RTX 4090 OC 24GB

The ASUS ROG Strix GeForce RTX 4090 OC Edition is a graphics card built for 4K gaming and professional creative workloads. It uses the NVIDIA Ada Lovelace architecture with 24GB of GDDR6X memory on a 384-bit interface. The card connects via PCI Express 4.0 and offers two HDMI 2.1 ports plus three DisplayPort 1.4a outputs for multi-monitor setups.

Triple-fan vapor-chamber cooling under load

A patented vapor chamber with a milled heatspreader sits beneath three scaled-up Axial-tech fans that deliver 23% more airflow. The 3.5-slot frame holds a massive fin array, while a diecast shroud, frame and vented backplate add rigidity and exhaust paths. Digital power control with high-current stages and 15K capacitors sustains the 2640 MHz boost clock during extended sessions.

24GB GDDR6X decides fit for 4K and AI

The 24GB GDDR6X buffer is the single specification that determines whether this card fits a build targeting 7680 x 4320 resolution, large texture datasets or heavy AI inference. With 384-bit bandwidth and DirectX 12 Ultimate support, it removes VRAM capacity as a bottleneck for those workloads.

How it compares

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

Price $2,650.99
Pricier than about 92% of the 4,285 comparable items (median $354.99).
Memory capacity 24 GB
Higher than about 91% of the 3,563 comparable items (median 8 GB).
Boost frequency 2640 MHz
Higher than about 85% of the 1,837 comparable items (median 1.89 GHz).

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Specifications

Product
Brand nameASUS
Product lineROG
Model nameROG-STRIX-RTX4090-O24G-GAMING
Part number90YV0ID0-M0AA00
Processor
TDP rating450 W
Memory
Type of memoryGDDR6X
Display
Highest resolution7680 × 4320
Graphics
Graphics processorGeForce RTX 4090
Memory capacity24 GB
Boost frequency2640 MHz
Chipset makerNVIDIA
Graphics seriesNVIDIA GeForce RTX 40 Series
Game clock speed2610 MHz
Memory bus width384-Bit
DirectX support12 Ultimate
OpenGL support4.6
Supported displays4
Audio & video
HDCP support2.3
Ports & slots
Interface typePCI Express 4.0
HDMI ports2 x HDMI 2.1
DisplayPort connectors3 x DisplayPort 1.4a
Power
Recommended power supply1000 W
Power input connector1 × 16-Pin
Size & build
Form factorATX
Max graphics card length358 mm
Card size357.6 × 70.1 mm
Slots occupied3.5 Slot
In the box
In the box1 x Collection Card
1 x Speedsetup Manual
1 x Adapter Cable
1 x ROG Graphics Card Holder
1 x ROG Velcro Hook & Loop
1 x Thank you Card
More details
Cooling solutionTriple Fans

Questions about this item

How loud and hot does the ROG Strix RTX 4090 get with its 3.5-slot triple-fan cooler running all day?

The card uses a patented vapor chamber with a milled heatspreader and three scaled-up Axial-tech fans delivering 23% more airflow, while a diecast shroud, frame and vented backplate maximise heat dissipation for lower GPU temperatures under sustained load.

What power connectors and PSU capacity must I already own for this 4090 to work?

Digital power control with high-current power stages and 15K capacitors demands a robust supply; you will need a PSU with native 12VHPWR or multiple 8-pin PCIe connectors rated for the card's full power draw.

Will the HDMI 2.1 and DisplayPort 1.4a outputs drive my existing 4K monitors at their native refresh rates?

Two HDMI 2.1 and three DisplayPort 1.4a ports support up to 7680 x 4320 resolution across four displays, so 4K high-refresh panels connect directly without adapters.

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