AMD Navi 22 GPU “Navy Flounder” has been spotted in the latest ROCm 3.8 update and it details the chip that will be powering the mid-tier Radeon RX 6800 or RX 6700 series graphics cards. The latest Rocm update 3.8 revealed the Navi 22 Navy Flounder GPU chip which is based on the RDNA 2 architecture.
The details were shared by Reddit user Stlbr and according to him, AMD’s Navy Flounder or Navi 22 GPU is expected to feature 40 Compute Units. This totals to 2560 cores if AMD has the same stream processor count on its RDNA 2 generation of GPUs as the RDNA 1 lineup which is 64 stream processors per CU.
The Navy Flounder GPU isn’t a new name and has been known around the same time Sienna Chiclid came to be known. As per the leaks, AMD’s Navi 21 GPU which is also referred to as AMD Big Navi GPU goes by the Sienna Chiclid codename whereas the Navi 22 GPU is a cut-down GPU and is codenamed Navy Flounder.
Keep in mind that none of these numbers are confirmed and are the result of the simple multiplication of three variables present in the firmware data. Assuming that each Compute Unit carries exactly 64 Stream Processors, the Navy Flounder would feature 2560 unified cores. This would get us the same core count as the Radeon RX 5700 XT. The 40 CUs are just as many as Navi 10, but the memory bus width is rumored to be limited to 192-bit.
According to recent rumors, the Navi 21 GPU which is expected to feature in the Radeon RX 6900 will feature a 256-bit bus interface with up to 16 GB GDDR6 memory while the Navi 22 GPU expected to power the Radeon RX 6800/6700 series is said to feature a 192-bit bus interface with up to 12 GB VRAM.
AMD’s next-generation desktop graphics processors based on AMD RDNA2 architecture are expected to debut on October 28th.
