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ASUS ROG Strix RTX 4090 graphics card with three axial fans and diecast backplate

ASUS

ASUS ROG Strix GeForce RTX 4090 OC Edition 24GB graphics card

SKU CH-CF4X-9EFKP

Triple-fan graphics card with 24 GB GDDR6X memory, 2640 MHz boost clock, and 450 W power draw for 4K gaming and heavy compute workloads

  • 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 enables 4K and 8K gaming at 7680 x 4320 resolution
  • Factory OC boost clock of 2640 MHz delivers higher frame rates in demanding titles
  • Triple Axial-tech fans scaled for 23 % more airflow keep temperatures lower under load
  • Patented vapor chamber with milled heatspreader improves thermal transfer from the GPU die
  • Digital power control with 15K capacitors provides stable current for sustained peak performance

ROG Strix RTX 4090 OC 24GB

The ASUS ROG Strix GeForce RTX 4090 OC 24GB is a high-end graphics card built for 4K gaming and professional rendering. 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 provides two HDMI 2.1 and three DisplayPort 1.4a outputs for up to four displays.

Sustained load thermal management

A 3.5-slot cooler with a patented vapor chamber and milled heatspreader handles the 450W thermal design power. Three scaled Axial-tech fans deliver 23% more airflow across a massive fin array. Digital power control with high-current power stages and 15K capacitors maintains stable voltage during extended sessions.

PCIe 4.0 and display interface limits

PCI Express 4.0 provides sufficient bandwidth for the RTX 4090 without saturating the link. HDMI 2.1 supports 4K at high refresh rates and 7680 x 4320 resolution. DisplayPort 1.4a drives high-refresh 4K panels and multi-monitor setups within its transmission limits.

How it compares

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

Price $2,831.99
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
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 much heat does the 450W TDP and triple-fan cooler produce during long sessions?

The card has a 450W thermal design power. Its 3.5-slot cooler uses a patented vapor chamber with milled heatspreader and three Axial-tech fans scaled for 23% more airflow to move that heat out of the case.

What power supply connectors and wattage does the 450W board need?

The 450W TDP requires a high-wattage PSU with native 12VHPWR or multiple 8-pin PCIe connectors; digital power control uses high-current power stages and 15K capacitors for stable delivery.

Will the 3.5-slot, triple-fan design fit alongside my existing PCIe 4.0 motherboard and case?

The 3.5-slot thickness occupies three to four expansion slots; verify case clearance and motherboard slot spacing. The card runs on PCI Express 4.0 and offers 2 x HDMI 2.1 plus 3 x DisplayPort 1.4a for current displays.

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