Navi 44 and Navi 48: New RDNA 4 GPUs Unveiled Through Linux Patches
In June of last year, at the Financial Analyst Day event, AMD updated its GPU roadmap for the RDNA/CDNA series architectures, unveiling that the RDNA 4 architecture GPUs would correspond to the Navi 4x series of chips. These chips are set to be manufactured using more advanced processes and are planned for a 2024 release. However, this summer, reports surfaced of significant “random issues” encountered during the development process and compromises in production capacity allocation, leading to speculation that the next-generation Radeon RX 8000 series graphics cards may not include high-end models.
According to VideoCardz, the RDNA 4 architecture GPUs have begun to appear in Linux LLVM patches, identified as GFX1200 and GFX1201, representing Navi 44 and Navi 48, respectively. While these names suggest lower-tier models, AMD has clarified that the numbering does not entirely reflect performance or market segmentation.
Based on compiled information, the RDNA series architecture’s corresponding graphics computing IPs are GFX101x (RDNA), GFX103x (RDNA 2), GFX11xx (RDNA 3), GFX115x (RDNA 3.5), and GFX12xx (RDNA 4).
Rumors suggest that Navi 48 will feature 32 Workgroup Processors (WGPs), utilize PCIe 5.0 x8 or x16 interfaces, and include an Infinity Cache of 32 or 48MB. It’s expected to have a memory bus width of 128 or 192 bits and to be equipped with GDDR7. Navi 44 is rumored to have 20 WGPs, a PCIe 5.0 x8 interface, an Infinity Cache of 24 or 32MB, a memory bus width of 96 or 128 bits, and will also use GDDR7.
The leaked information indicates that AMD has already commenced preliminary work on the new RDNA 4 architecture, with expectations of its arrival next year. According to previous statements, AMD is balancing the development of the existing RDNA 4 architecture while allocating more resources to accelerate the development of the RDNA 5 architecture. This strategy is aimed at compensating for the potential gaps in the product line due to the cancellation of high-end models in the Navi 4x series.
