The AMD RDNA 3 lineup will feature monolithic GPUs and MCMs that will power next-generation Radeon RX 7000 series graphics cards; lately there have been reports that graphics chips Navi 3X They will begin to be manufactured shortly, so it is still too early to know if the information used to display these die is reliable or not, although we have to say that they come from sources that have been quite accurate in their previous leaks. In any case, you must bear in mind that this not information confirmed by AMD and therefore it must be treated as such.
The AMD Navi 32 GPU will be one of the two MCM GPUs included in the first generation of RDNA 3 dedicated graphics. This GPU would have two GDC (Graphics Compute Dies) and a solitary MCD (Multi-Cache Die); The die is very similar to the flagship Navi 31 that we saw earlier, but it has one less shader motor in each of its die. The AMD Navi 32 GCD is expected to use the process node of 5 nm from TSMC, while the MCD will be based on a still unknown 6nm process node (probably from TSMC), as AMD is rumored to have the option to choose between Samsung and TSMC for this one.
Each of the GCDs has 2 Shader Engines (4 in total) and each of them has 2 Shader Arrays (2 by SE, 4 by GCD, 8 in total), each of them made up of 5 WGPs (40 in total ) and each WGP with 8 SIMD32 units with 32 ALUs (320 in total). These SIMD32 units combine to form 5,120 cores per GCD for a total of 10,240 cores.
The MCD Navi 32 RDNA 3 will link to the dual GCDs via a next generation Infinity Fabric connection, and would have 384MB of it. Each GPU must also include 3 32-bit memory patch links, for a total of 6 32-bit memory controllers to make up a 192-bit interface total.
This would take the performance of the Radeon RX 7000 Series (and more specifically the RX 7700 that would carry this die) above the RX 6900 series, offering a huge leap in terms of graphics power for games. This will also increase the consumption numbers, yes, since the current Radeon RX 6700 XT has 230W of TDP but in these terms we could be around the 270-300W easily.
The AMD Navi 33 GPU will start the monolithic segment within the RDNA 3 family, as it will feature a single die. The die is very similar to the previous generation Navi 21 GPU flagship and is expected to use the manufacturing node of 6 nm from TSMC or Samsung for your design.
The Navi 33 GCD has two shader engines, each with 2 shader arrays (4 in total). Each Shader Array is made up of 5 WGPs (10 per SE, 20 in total) and each of them integrates 8 SIMD32 units with 32 ALUs (160 in total), which are combined to form 5,210 cores, the same number as the Navi 21 XTX GPU.
RDNA 3 architecture Navi 32 is expected to carry 256MB of Infinity Cache, and each GPU must include 2 32-bit memory patch links, giving us a total of 4 32-bit memory controllers for a total of 128 bits on its memory interface bus. This would bring the performance of the Radeon RX 7600 above the RX 6800 and RX 6900 series with a TDP of around 200 watts.
The configuration of the GPU Navi 31 shown here features two GCDs and a single MCD. Each GCD has 3 Shader Engines (6 in total) and each has 2 Shader Array (12 in total). Each of these has 5 WGPs (60 in total) and each of them integrates 8 SIMD32 units with 32 ALUs (for a total of 480); In total we have 7,680 cores per GCD and 15,360 cores total.
The RDNA 3 architecture MCD Navi 31 will link to dual GCDs via the next generation Infinity Fabric with 256-512MB total. Each GPU also has 4 32-bit memory patch links, giving us 8 32-bit memory controllers for a total of 256 bits on its memory interface.
There have been several rumors that the upcoming RDNA 3 Radeon RX 7000 Series GPUs will outperform everything NVIDIA has to offer in terms of performance; It looks like AMD will take the lead by offering the first MCM-powered GPUs in its Radeon RX 7000 graphics lineup, but at the same time NVIDIA is expected to make a rapid transition to MCM that will deliver 3x better performance compared to Ampere GPUs. , so the battle is served and in style.