AMD’s Upcoming RDNA3 GPUs Feature 2x More Graphics Cache As Compared To Last Gen

AMD just announced their Ryzen 7000 CPUs with a last minute ‘RDNA3‘ tease. You can read more about the tease here. Recently, a few linux patches have revealed the cache numbers for AMD’s RDNA3 GPUs.

RDNA 3

 

To recap, the RDNA3 microarchitecture features 3 GPUs namely:

  • Navi 31
  • Navi 32
  • Navi 33

We have the full specifications for all these chips available here. Navi31 and Navi32 will feature a MCM (Multi Chip Module) design whereas Navi 33 makes use of the good old monolithic design. AMD is redesigning the CUs (Compute Units) to deliver enhanced RT (Ray Tracing) performance. To add onto that, these GPUs promise a 50% Performance/Watt leap as compared to last-Gen.

AMD RDNA3 Performance/Watt Leap | AMD

Cache Values

Moving on to the actual topic, Kepler on Twitter compiled all the cache values. The RDNA3 architecture powered Navi 31, Navi 32 will ship with twice the Vector Cache per CU (Compute Unit) as compared to RDNA2. Similarly, the new GPUs are powered by 256KB of Graphics L1 Data Cache per SA (Shader Array) which is a whopping 2x more than last-Gen. 

The same pattern follows for the Navi 33 and the Phoenix (APU) lineup which make use of a monolithic design in contrast to Navi 31, 32. The only difference lies in the Register File per SIMD (Single instruction, multiple data) where N33 and Phoenix feature a cut down 128KB of Vector Register (per SIMD) memory.   

AMD RDNA3 Cache Values | Kepler

Additional Changes

Coelacanth-dream gave us some more information regarding these new GPUs from team red. Reportedly, all Navi3X GPUs feature support for VODP (Dual-Issue Wave32) instructions, WMMA (Wave Matrix Multiply-Accumulate). In addition, the performance per each WGP (Work Group Processor) has increased significantly. 

Release Date

Team red teased its Navi3X GPUs during its Ryzen 7000 reveal and gave us an expected release date of ‘Sometime this year’. We expect these GPUs to arrive side by side with NVIDIA’s Lovelace. Which giant do you think will take the crown this year? Tell us in the comments.

Abdullah Faisal
With a love for computers since the age of give, Abdullah has always sought to delve into the depths of information, and uses it as his guiding light. He believes success is of utmost importance as history is written by the victor.