AMD is expected to release budget-friendly RDNA 5 desktop graphics cards in 2027, according to details leaked by hardware commentator Moore’s Law Is Dead. Two chips, codenamed “AT3” and “AT4,” are said to be based on TSMC’s N3C or N3P process nodes and may power mid-range and entry-level graphics cards.
The AT4 GPU, also referred to as “Alpha Trion 4,” is reported to include 24 Compute Units, up to 10 MB of L2 cache, and 8 PCIe Gen 5 lanes. Unlike typical desktop boards that use GDDR memory, AT4 is said to adopt a 128-bit LPDDR5X controller, potentially allowing for 12 GB to 24 GB of VRAM. Performance is expected to sit between Nvidia’s RTX 3060 and RTX 4060, positioning the card as an affordable option similar to the RX 6500 XT.
AT3, the higher-end of the two GPUs, is reported to feature 48 Compute Units and wider memory options through either a 384-bit LPDDR6 or 256-bit LPDDR5X controller. While in theory this could support very large memory capacities, estimates suggest between 16 GB and 32 GB of VRAM for desktop variants. Early performance expectations place the AT3 between Nvidia’s RTX 4070 and AMD’s upcoming RX 9070, with stronger ray-tracing capability.
Both AT3 and AT4 are said to share chiplet designs with AMD’s planned Medusa Halo and Medusa Halo Mini APUs, representing a shift in how the company integrates iGPUs into its mobile processors. Analysts note that the reported use of laptop memory instead of GDDR in desktop cards would be a significant design departure if confirmed.
As the information is based on early leaks, industry watchers caution that specifications and performance estimates may change as AMD finalizes its RDNA 5 lineup.