Radeon RX 7700 XT

AMD Radeon RX 7700 XT Graphics Cards

The AMD Radeon RX 7700 XT is a high-performance gaming graphics card for gaming and live streaming in WQHD resolution. AMD's new gaming GPU was introduced at the end of August 2023 during Gamescom 2023 and is aimed at gamers and content creators with high demands on performance and graphics quality. The Navi 32 graphics chip of the RX 7700 XT is based on the RDNA3 GPU architecture and is manufactured using a 5 nm process. In addition to various gaming technologies, the biggest innovation compared to the second Navi generation is the efficient chiplet layout with a larger memory interface and bandwidth as well as more graphics memory.

Performance Data of the AMD Radeon RX 7700 XT Graphics Card in Reference Design:

• Compute Performance (FP32): approx. 17.6 TFLOPS
• Base Clock of the GPU: 1,900 MHz
• Game Clock of the GPU: 2,171 MHz
• Boost Clock of the GPU: 2,544 MHz
• Graphics Memory: 12 GB GDDR6
• Memory Clock: 2,250 MHz (effective 18,000 MHz)
• Memory Interface: 192 Bit
• Memory Bandwidth: 432.0 GB/s
• Shader Units: 3,456
• TDP of 245 Watts
• Power Supply: 2x 8-Pin PCIe
• Video Outputs: DP 2.1, HDMI 2.1

Radeon RX 7700 XT: The RDNA3 GPU Architecture

The Radeon RX 7700 XT is based on the Navi 32 graphics chip, which consists of 28.1 billion transistors. The total of 3,456 streaming processors (shader units) are divided into groups of 64 shaders on 54 compute units (CUs). In addition to the 64 shaders, each CU has a "Ray Accelerator" for hardware-based ray tracing, totaling 54. They also ensure more efficient ray tracing in corresponding games.

Through the new chiplet design, AMD increases the transistor density by 263 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 and kept the power consumption at around 245 watts, about the same level as its predecessor.

The GPU clocks on average in games at a game clock of 2,171 MHz. With particularly high demands on the graphics chip, it can boost up to 2,544 MHz.

Infinity Cache & Video Memory

Features of the RDNA3 architecture include AMD's Infinity Cache, which is set to 48 MB. The Infinity Cache enables a 3.25 times higher effective memory bandwidth. With the 192-bit memory interface and an effective memory clock of 18,000 MHz, this results in a memory bandwidth of up to 432 GB/s. This increased memory bandwidth is especially interesting for gaming at high resolutions.

For video memory (VRAM), AMD relies on the GDDR6 standard and a capacity of 12 GB for the Navi 32 graphics cards. Thanks to the mentioned Infinity Cache, this achieves a performance that should correspond to equipping with faster GDDR6X. This allows AMD to implement a powerful combination of high speed and high capacity on the graphics card without having to resort to the more expensive memory type.

Smart Access Memory

With 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 takes advantage of the “resizable BAR” function of the PCIe standard. A corresponding gaming system should benefit from a minimal performance increase. 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.192 Decoding/Encoding

Raytracing & FidelityFX

With the Ray Accelerators, AMD provides hardware-based ray tracing. Ray tracing (Microsoft DirectX 12 DXR) enables realistic lighting by simulating the physical properties and behavior of light. Ray tracing calculates the color of individual pixels as the light travels from the user's eye through a 3D landscape.

On its way through the 3D scenery, the light is reflected by objects or creates reflections. At the same time, shadows, transparent, or semi-transparent objects are created, resulting in light refractions or distortions. All these effects are combined by ray tracing to display 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 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

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 and 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