Radeon RX 7000 series

The Radeon RX 7000 series is a series of graphics processing units developed by AMD, based on their RDNA 3 architecture. It was announced on November 3, 2022 and is the successor to the Radeon [RX 6000 series]. The first two graphics cards of the family were released on Dec 13, 2022. Currently AMD has announced and released eight desktop graphics cards of the Radeon RX 7000 series: the entry level RX 7400, RX 7600, and RX 7600 XT; the mainstream RX 7700 XT and RX 7800 XT; the high-end RX 7900 GRE; and the enthusiast RX 7900 XT and RX 7900 XTX. Four laptop chips have also been released in two series; the power efficiency targeting S series, consisting of the RX 7600S and RX 7700S; and the M series, consisting of the RX 7800M and RX 7900M.

Features

RDNA 3 microarchitecture
* Up to 96 Compute Units compared to the maximum of 80 in the RX 6000 series
* New dual-issue shader arithmetic logic units in each CU with the ability to execute two instructions per cycle
* Second-generation Ray tracing accelerators
* Acceleration of AI inference tasks with Wave matrix multiply-accumulate instructions on FP16, non-matrix execution units
First consumer graphics card to be based on a chiplet design
* TSMC N5 for Graphics Compute Die
* TSMC N6 for Memory Cache Die
Up to 24 GB of GDDR6 video memory
Doubled L1 cache from 128 KB to 256 KB per array
50% increased L2 cache from 4 MB to 6 MB maximum
Second-generation Infinity Cache with up to 2.7x peak bandwidth and up to 96 MB in capacity
PCI Express 4.0 x8 or x16 interface
Support for AV1 hardware encoding and decoding for 12-bit video up to 8K60
New "Radiance Display" Engine with:
* DisplayPort 2.1 UHBR 13.5 support
* HDMI 2.1a support
* Support up to 8K 165 Hz or 4K 480 Hz output with DSC
* 12-bit color and Rec. 2020 support for HDR
Navi 3x dies

Navi 31

The Navi 31 multi-chip module features 58 billion transistors, a 165% increase in transistor density than the previous generation Navi 2x, across seven dies: one Graphics Compute Die and six Memory Cache Dies. The full Navi 31 die contains 12,288 FP32 cores, equivalent to 6144 stream processors. Reportedly, the Navi 31 die has been designed to scale up to 3.0 GHz frequency, though AMD's Radeon RX 7900 XTX reference design can hit a boost frequency of 2.5 GHz. The Navi 31 die is fabricated on TSMC's N5 process node.

Navi 33

The Navi 33 die features 13.3 billion transistors and a die size of 204 mm². The full die features 4096 FP32 cores, segmented into 32 Compute Units. Unlike the higher-end Navi 31 die, it is a monolithic design fabricated on TSMC's N6 process node.

Products

Desktop

Mobile

Workstation

Issues

Idle power usage

Abnormally high power draw while at idle was observed with the Radeon RX 7900 XT and RX 7900 XTX when using select high resolution, high refresh rate displays and when the GPU is decoding video. ComputerBase discovered that the RX 7900 XT and RX 7900 XTX drew a respective 71W and 80W when decoding and playing a 4K 60FPS YouTube video compared to the 30W used by the RX 6900 XT for the same task. AMD acknowledged the issue and it was added to the list of known issues to be addressed with future updates to drivers and Radeon Adrenalin software. On December 22, 2022, Adrenalin Edition 22.12.2 was released and its RDNA 3-exclusive driver significantly reduced the GPU's power usage at idle and when decoding video.