AMD will launch next-generation RDNA 3 architecture Navi 3x series GPUs next year to power the Radeon RX 7000 series graphics cards. It is rumored that AMD Radeon RX 7000 series graphics cards are divided into RDNA 3 architecture and RDNA 2 architecture products. RDNA 3 architecture has only three GPUs: Navi 31/Navi 32/Navi 33.
Navi 31 and Navi 32 will use MCM multi-chip packages, but Navi 33 will still be single-chip. It uses a 5nm process to manufacture GCD (graphics computing chip) and 6nm process to manufacture MCD (multi-buffer I/O chip), AMD will change the original structure instead of the original CU computing unit and will use WGP as the main computing module. Each WGP has 256 stream processors. Among them, the Infinity Cache of Navi 31 and Navi 32 will turn to the design of 3D stack, which will be added to the MCD chiplet, which is similar to the principle of using 3D V-Cache on the Zen 3 architecture.
According to recent leaks from Twitter user @greymon55, Navi 31 will have 60 WGP, that is 15,360 stream processors, Infinity Cache is 256MB, and the video memory bit width is still maintained at 256 bits, equipped with 16GB GDDR6, and the core frequency is 2.5 GHz. Navi 32 has 40 WGP, that is, 10240 stream processors, Infinity Cache is 192MB, memory width is 192 bits, is equipped with 12GB GDDR6, and the core frequency is between 2.6 and 2.8 GHz. Navi 33 has 16 WGPs, that is, 4096 stream processors, Infinity Cache is 64MB, the memory width is 128 bits, is equipped with 8GB GDDR6, and the core frequency is between 2.8 and 3.0 GHz.
Navi 31/Navi 32/Navi 33 respectively correspond to Radeon RX 7900 XT/RX 7800 XT/RX 7700 XT, udging from the leaked specifications, Infinity Cache and video memory capacity seem to be smaller than previously rumored, which is one of the reasons why many people doubt whether the information is accurate. It is rumored that the Radeon RX 7700 XT may be stronger than the Radeon RX 6900 XT. This shows that the RDNA 3 architecture has a greater improvement in efficiency compared to the RDNA 2 architecture. On the other hand, it is related to the higher core frequency.