AMD Navi 3x series detailed specifications exposure: Navi 31 infinite cache is 96MB
AMD will soon launch the Radeon RX 7000 series of graphics cards, of which there will be three Navi 3x series GPUs based on the RDNA 3 architecture, namely Navi 31, Navi 32, and Navi 33, which will introduce chiplet designs for the first time on consumer graphics cards. It was previously reported that AMD may choose to release a new generation of graphics cards in late October to mid-November this year.
According to Angstronomics, AMD has determined the specifications of the Navi 3x series GPUs as early as 2020, and there has been no change during the period. The final specifications of these GPUs have now been obtained.
Navi 31 and Navi 32 will use MCM multi-chip packages, equipped with one GCD (Graphics Chiplet Die) and four or six MCD (Memory Chiplet Dies), and will use two different processes technologies, the former is TSMC’s 5nm, the latter is 6nm. In the news, the size of GCD and MCD is smaller than the past rumors, the possible size of these chips or modules:
Navi 33 = 203mm²
Navi 31/32 MCD = 37.5mm²
Navi 32 GCD = 200mm²
Navi 31 GCD = 308mm²
Navi32 Total = 350mm²
Navi31 Total = 533mm²
It is understood that the public version of the graphics card equipped with Navi 31 is still a three-fan cooling design, equipped with two 8Pin external power supply interfaces, and does not use the new 16Pin PCIe 5.0 external power supply interface, the power consumption of the graphics card will be slightly higher than that of the existing Radeon RX 6000 series. In addition, the Infinity Cache of Navi 31 is 96MB. It is rumored that AMD has a 3D stacking version that can increase the capacity to 192MB, but it may be abandoned due to increased cost and limited performance improvement.
