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ASUS Announces ROG Strix/TUF RTX 4090 and 4080: 24+4 Power Phases, 3.5 Slot Wide, Dual BIOS, Capable of Cooling 500W Loads

ASUS has announced the TUF and ROG Strix variants of the GeForce RTX 4090 and 4080 with amped-up thermal solutions and lighting. The top-of-the-line Strix GeForce RTX 4090 comes with a 357mm long, 3.5-slot wide design featuring a die-cast metal frame, shroud, and backplate. The vapor chamber design has been overhauled to include milled channels underneath the heatpipes.

ASUS ROG Strix RTX 4090 24GB

Instead of the pipes lying flat against the surface, they sink into the vapor chamber, allowing more heat to efficiently transfer to the four 8 mm and three 6 mm heatpipes and travel to the heatsink fins. When subjected to a 500-watt thermal load, this potent pairing allows for 5 °C cooler temperatures than a conventional vapor chamber design.

ASUS has also upgraded the fans with a thicker design featuring seven blades and full barrier rings that provide 23.8% more airflow and 19.3% more pressure than the ones used on the ROG Strix GeForce RTX 3090. Of course, the power delivery system has also been scaled up to a 12+4 phase comprised of 70-amp power stages. With two power stages per phase, that is a total count of 24+4.

ASUS TUF Gaming RTX 4090 24GB

The TUF Gaming GeForce RTX 4090 is fatter and shorter. Slightly thicker than its ROG sibling at 3.65 slots, the TUF model measures a bit shorter at 348 mm for wider case compatibility. It leverages a die-cast unibody shroud that mates directly to an aluminum backplate to strengthen the overall structure and protect the PCB. A massive vent at the edge of the backplate allows even more air to flow through the fins from the larger Axial-tech fans, providing 20% more airflow than last generation’s TUF Gaming GeForce RTX 3090 Ti.

Like the Strix, ASUS has also redesigned the TUF’s cooling with a new vapor chamber. While it does not use the same milled design as its Strix sibling, the eight heatpipes — five 8 mm and three 6 mm — offer a offer 35% more contact area compared to the TUF Gaming GeForce RTX 3090. The TUF Gaming GeForce RTX 4090 uses the PCIe 5.0 standard’s new 16-pin power connector with capacitors rated for 20K and a spread of high-current power stages arranged in a 10+4 configuration.

ASUS ROG Strix and TUF RTX 4080 12GB/16GB

Like its older sibling, the Strix RTX 4080 features a 3.5-slot cooler design with a length of 357mm. It also adopts an upgraded vapor chamber with milled channels to give the heatpipes more contact area and larger axial fans. You also get dual-BIOS support for advanced overclocking capabilities and/or silent 0dB operation. The 12GB variant is slightly smaller at 3.15 slots thick and 336 mm long. All the features and capabilities of the 16GB variant are included.

Like the Strix, the 16GB variant of the RTX 4080 retains the same design as the TUF RTX 4090. The 12GB model, however, gets a few cuts here and there: A slightly thicker heatsink but a shorter horizontal form. It’s 3.25 slot wide and 305mm long, making it ideal for smaller builds. The unibody die-cast shroud shares the same structural strength as its larger brethren, while a wide vent on the backplate improves airflow. The 12 GB TUF card also offers the Dual BIOS switch and military-grade capacitors, alongside a 10+4 phase power delivery.

Areej

Computer hardware enthusiast, PC gamer, and almost an engineer. Former co-founder of Techquila (2017-2019), a fairly successful tech outlet. Been working on Hardware Times since 2019, an outlet dedicated to computer hardware and its applications.
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