Radeon RX 7900 XT

Radeon RX 7900 XT

The graphics card for gamers and creators

With these words, AMD introduces the product page of the Radeon RX 7900 XT. The graphics card was presented by AMD's CEO Dr. Lisa Su on November 3, 2022, and has been officially available since December 13, 2022. The Radeon RX 7900 XT is AMD's gaming flagship and can compete in this segment against the competition. The Navi 31 XT graphics chip of the RX 7900 XT is based on the RDNA3 GPU architecture and is manufactured using a 5nm process. In addition to various gaming technologies, the biggest innovation compared to the second Navi generation is the efficient chiplet layout along with a larger memory interface and bandwidth, as well as more graphics memory.

Performance data of the AMD Radeon RX 7900 XT graphics card in the reference design:

• Computing power (FP32): approx. 25.8 TFLOPS
• Base clock of the GPU: 1,500 MHz
• Game clock of the GPU: 2,000 MHz
• Boost clock of the GPU: 2,400 MHz
• Graphics memory: 20 GB GDDR6
• Memory clock: 2,500 MHz (effectively 20,000 MHz)
• Memory interface: 320-bit
• Memory bandwidth: 800 GB/s
• Shader units: 5,376
• TDP of 300 watts
• Power supply: 2x 8-pin PCIe
• Video outputs: DP 2.1, HDMI 2.1, USB-C with DP 2.1

Radeon RX 7900 XT: The RDNA3 GPU architecture

The Radeon RX 7900 XT is based on the Navi 31 graphics chip, which consists of 58 billion transistors. The total of 5,376 streaming processors (shader units) are divided into groups of 64 shaders on 84 compute units (CUs). In addition to the 64 shaders, each CU is assigned a "Ray Accelerator" for hardware-based ray tracing, totaling 84. These also ensure more efficient ray tracing in corresponding games.

With the new chiplet design, AMD increases the transistor density by 165 percent. This allows for either higher clock rates at the same power consumption or lower power consumption at the same clock rate. Here, AMD has increased the clock rate while keeping the power consumption at around 315 watts, similar to its predecessor.

The GPU clocks on average at a game clock of 2,000 MHz during gaming. For particularly high demands on the graphics chip, it can clock up to 2,400 MHz using the boost function.

Infinity Cache & Video Memory

Among the features of the RDNA3 architecture is, like its predecessor, AMD's Infinity Cache, which is set to 80 MB. The Infinity Cache enables a 3.25 times higher effective memory bandwidth. With the 320-bit memory interface and an effective memory clock of 20,000 MHz, this results in a memory bandwidth of 800 GB/s. This increased memory bandwidth is especially interesting for 4K and 8K gaming.

As video memory (VRAM), AMD uses the GDDR6 standard with a capacity of 20 GB for the Navi 31 graphics cards. Thanks to the mentioned Infinity Cache, this ultimately achieves a performance that should correspond to the equipment with faster GDDR6X. This way, AMD can implement a powerful combination of high speed and high capacity on the graphics card without resorting to the more expensive memory type.

Smart Access Memory

With the Smart Access Memory technology (SAM), AMD promises additional performance when combining a Radeon RX 7000 graphics card with a Ryzen 5000 processor on an X570 or X670 motherboard. SAM makes use of the “resizable BAR” function of the PCIe standard. A corresponding gaming system should benefit from a minimal performance boost. How much the performance increases depends on the game and the chosen resolution.

Other Features

Among the many smaller optimizations of the RDNA3 GPU architecture are:

• DisplayPort 2.1 and HDMI 2.1 for 4K gaming at 120 Hertz or more
• Variable Rate Shading (DirectX 12 Ultimate)
• Mesh Shader (DirectX 12 Ultimate)
• Sampler Feedback (DirectX 12 Ultimate)
• AV1 decoding (8K30, 4K60)
• H264 & H.256 decoding/encoding

Ray Tracing & FidelityFX

With the Ray Accelerators, AMD features hardware-based ray tracing. Ray tracing (Microsoft DirectX 12 DXR) enables realistic lighting through the simulation of physical properties and the behavior of light. Ray tracing is the calculation of the color of individual pixels during the path the light takes from the user's eye through a 3D landscape.

On its way through the 3D scene, light is reflected by objects or creates reflections. At the same time, shadows, transparent or semi-transparent objects are created. This results in refractions or distortions. All these effects are combined through ray tracing to represent the final color of a pixel on the monitor.

As a relatively new technology, ray tracing places very high demands on the hardware. With FidelityFX, AMD implements a super-resolution technology to relieve the ray tracing accelerators.

Gaming Technologies

Together with the hardware in the form of graphics cards, AMD offers gaming technologies that aim to provide PC gamers with a better experience. Supported features for gamers include:

• Maximum performance with the Radeon Adrenalin software
• AMD Radeon Anti-Lag
• AMD Radeon Boost
• AMD FreeSync (4K@240Hz, 8K@60Hz)
• Supports HDMI 2.1 VRR

Buy the best AMD Radeon RX 7900 XT graphics cards

We offer gaming graphics cards with the Radeon RX 7900 XTX GPU from the following manufacturers:

• Buy ASUS Radeon RX 7900 XTX
• Buy GIGABYTE Radeon RX 7900 XTX
• Buy SAPPHIRE Radeon RX 7900 XTX

The current AMD RX 7000 graphics cards at a glance:

Do you want to know which AMD graphics card is right for you? The following list contains all current models of the RDNA-3 generation, sorted by performance, starting with the most powerful graphics card.

• AMD Radeon RX 7900 XTX
• AMD Radeon RX 7900 XT
• AMD Radeon RX 7900 GRE
• AMD Radeon RX 7800 XT
• AMD Radeon RX 7700 XT
• AMD Radeon RX 7600 XT
• AMD Radeon RX 7600