Asus GeForce RTX 4090 ROG Strix 24GB GDDR6X PCI-Express Graphics Card. This is no ordinary vapor chamber, however. In order to provide better heat transfer, this patented vapor chamber design adds milled channels underneath the heatpipes. Instead of the pipes lying flat against the surface, they sink into the vapor chamber, allowing more heat to efficiently transfer to the four 8mm and three 6mm heatpipes and travel to the heatsink fins. When subjected to a 500W thermal load, this potent pairing allows for 5°C cooler temperatures than a conventional vapor chamber design.

We also upgraded the Axial-tech fans, with a thicker design featuring 7 blades and full barrier rings that provide 23.8% more airflow and 19.3% more pressure than the previous generation fans used on the ROG Strix GeForce RTX 3090. With these improvements, we were able to keep GPU temperatures and acoustics at similar levels to the previous generation model, despite the extra power.

Speaking of power: this is an absolute monster of a gaming card, so we’ve included a 12+4 phase system comprising 70A power stages. With two power stages per phase fueling the GPU, that’s a total count of 24+4. The digital controller on board offers higher precision when detecting power, as well as better power conversion and balancing for less noise and signal interference. With a quality power supply in place (like our ROG Thor 1200P2), you should have no problem driving this beast of a graphics card, and with native 16-pin PCIe support, you can do it without any adapters required.

All of this comes with the same high-end features ROG Strix cards are known for. An ARGB tail-light works with Aura Sync to offer customized lighting across your build, while two FanConnect II headers allow you to control your case fans with your GPU temperature through our new GPU Tweak III software. For those who don’t want to dig in and tweak too much, the Dual BIOS switch allows you to choose between maximum performance mode and a quieter mode. Though thanks to our 0dB technology, the card will be silent at low loads no matter which mode you choose.

Finally, like our other ROG cards, the Strix GeForce RTX 4090 was built with our Auto-Extreme manufacturing process that minimizes human intervention, so you can expect reliable long-term performance right out of the box.