It was previously mentioned that AMD was developing its RDNA 3-based Radeon RX 7900 XTX and RX 7900 XT graphics cards. Now that we have confirmation of this, the red team expects to present at least two Navi 31 MCM choices the following week, the RX 7900 XTX and RX 7900 XT.
These data points are from an internal AMD presentation that lists the upcoming RDNA 3 graphics cards. Twitter leaker Chi11eddog (@g01d3nm4ng0) has posted two pictures that don’t reveal much. However, we can assure you that Chi11eddog has been extremely precise with his leaks thus far. The AMD Radeon RX 7900 XTX 24 GB and Radeon RX 7900 XT 20 GB cards are listed in this list.
The next-generation enthusiast cards, including the Radeon RX 7900 XTX/XT graphics card, would be powered by the AMD Navi 31 GPU, the top-tier RDNA 3 processor.
We’ve heard that AMD would replace its next-generation RDNA 3 GPUs’ compute units with workgroup processors. Dual CU (Compute Units) will be housed in each WGP, but there will be four SIMD32 clusters per CU, as opposed to two on each CU in RDNA 2. According to rumours, AMD has the choice of the 6nm die from TSMC or Samsung.
The AMD Navi 31 GPU with RDNA 3 architecture is anticipated to feature a single GCD with 48 WGPs, 12 SAs, and 6 SEs, according to the most recent information. There will be a total of 12,288 stream processors distributed as a result. This represents a 2.4x increase in cores above the 5120 SPs found in the Navi 21 GPU. According to reports, the Navi 31 GCD, often known as the GPU, would be packaged on TSMC’s 5nm production node and measure 308mm2.
The Navi 31 GPU will also include 6 MCDs, each of which will have a 16 MB Infinity Cache. Additionally, these MCDs are anticipated to include 64-bit (32-bit x 2) memory controllers, giving the device a 384-bit bus interface.
There is a 3D-Stacked solution in development that would double the Infinity Cache with 32 MB (16 MB 0-hi + 16 MB 1-hi) capacity for a total of 192 MB of cache, even though this equates to 96 MB of Infinity Cache, which is less than the 128 MB featured on the current Navi 21 GPUs. With a 50% improvement over the current Navi 21 design, Navi 31 is the first GPU to feature both chiplet and 3D stacked designs. These chiplets, also known as MCDs, will be produced on TSMC’s 6nm production node and have a 37.5mm2 surface area each.
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