AMD RDNA 5 Flagship AT0 GPU Leaked With 96 Compute Units and 512-bit Memory Bus

AMD's next-generation RDNA 5 architecture is pushing the company toward a more complex chiplet design for its flagship graphics card. This shift matters because it aims to pack significantly more compute power into a single GPU without the performance penalties of splitting workloads across multiple chips. Buyers looking for the highest tier of AMD gaming hardware should watch for these architectural changes as they define the performance ceiling for the upcoming generation.

Flagship RDNA 5 AT0 GPU Leaked With 96 Compute Units and 512-bit Memory Bus

The top-end model in this lineup carries the codename AT0 and represents the most powerful variant of the RDNA 5 series. It relies on a Linux driver identifier, GFX 13.0.1, which signals its place in the hardware stack. This specific driver patch helps confirm the existence of the AT0 model alongside other variants like AT2 and AT3.

Specifications

• Architecture: RDNA 5
• Model Codename: AT0
• Compute Units (CU): 96
• Memory Bus Width: 512-bit
• Chiplet Structure: 1 Compute Die (XCD) + 2 Auxiliary Dies (AID, MID)

The AT0 GPU is expected to feature 96 Compute Units (CUs) concentrated on a single compute die, known as an XCD. This design choice avoids the latency issues that can arise when compute resources are divided among several chips. The architecture also incorporates two auxiliary dies, identified as an AID for base functions and an MID for input/output and video processing.

Leaker Kepler_L2 suggests the AT0 will utilize a wide 512-bit memory bus to feed data to these 96 compute units. This configuration aligns with the Linux driver patch that supports a setup of one AID and one XCD. The chiplet structure combines one operational die with two auxiliary dies to handle different functional requirements.

Release timelines for the RDNA 5 family appear to be staggered, with the AT2 model targeted for a 2027 launch. The AT0 and other non-AT2 products are currently expected to arrive in 2028. We previously covered the AMD RDNA 5 AT2 GPU Leaked, which highlighted a smaller 70-CU configuration for that mid-tier variant.

Current information points to a 2028 arrival for the flagship AT0, though AMD has not officially confirmed the exact die count or the inclusion of the MID die. The GFX 13.0.1 driver patch confirms the architectural direction but does not provide final verification of the complete three-die configuration.