AMD confirms Navi 44 and Navi 48 via ROCm

According to AMD’s RDNA/CDNA architecture roadmap, the RDNA 4 architecture GPUs correspond to the Navi 4x series chips, which will utilize a 4nm manufacturing process to further enhance energy efficiency. Rumors suggest there will be only two chips, Navi 48 and Navi 44, and preliminary specifications have already been leaked.

Recently, an internet user discovered that AMD has confirmed Navi 48 and Navi 44 through ROCm, with the corresponding graphic IDs being “GFX1200” and “GFX1201,” respectively. These are the only updated GPUs since the Phoenix RDNA 3 architecture integrated graphics. For those who have been following the news about RDNA 4 architecture GPUs, this information is not surprising.

Navi 48 will be equipped with 32 WGPs, totaling 64 CUs, with a memory bus width of 256 bits, memory bandwidth of 693GB/s, and an effective bandwidth reaching 2770GB/s. The GPU chip area is 240mm². In comparison, the current Radeon RX 7800 XT, which features the Navi 32, has a chip area of 346mm², 60 CUs, the same 256-bit memory bus width, memory bandwidth of 624.1GB/s, and effective bandwidth of 2708GB/s. It is reported that Navi 48 will deliver 50 TFLOPs of computing performance at 215W power, whereas the Radeon RX 7800 XT delivers 37 TFLOPs at 263W, and NVIDIA’s GeForce RTX 4070 Ti offers 40 TFLOPs at 285W.

The other chip, Navi 44, targets the mid-to-low-end market, with 16 WGPs and 32 CUs, a memory bus width of 128 bits, memory bandwidth of 288GB/s, and effective bandwidth of 515GB/s. The GPU chip area is 130mm². In comparison, the current Radeon RX 7600, which features the Navi 33, has a chip area of 204mm², the same 32 CUs, 128-bit memory bus width, and memory bandwidth of 288GB/s.

AMD has yet to confirm the release date for the RDNA 4 architecture GPUs, but it is widely speculated that they will be launched later this year as part of the Radeon RX 8000 series graphics cards.