GreyMon55 revealed "Estimated" characteristics of the AMD Radeon RX 7950 XT "RDNA 3" video card. New specifications correspond to what we have heard before, but it seems that AMD plans to present several SKU NAVI 31 in the upcoming Radeon RX 7000 family.

AMD Radeon RX 7950 XT: with 3 cores 15360 RDNA, 32 GB massive memory with Infinity 512 MB cache and clock frequency up to 2.5 GHz at 500 W TBP

For some time there are negotiations on the Navi 31 graphics processor on the basis of AMD RDNA 3. Madness, that we know so much about this graphics processor from rumors and leaks. It is also one of the reasons why we should treat all this information with the fraction of skepticism, although the sources of leakage and sources that publish the details are quite reliable, based on their previous information drops. Please note that this post is not a primary history, and Greymon55 even confirms this in their answers.

So, let's start with the graphics processor AMD Navi 31, the RDNA 3 flagship chip, which will work on the next generation RADEON RX 7900 XT video card. Olrak29_ managed to collect a chip block diagram based on all rumors who went on Twitter. We have heard that AMD will refuse CU (computing units) in favor of WGP (working group processors) on its graphic processors of the next generation RDNA 3.

The Navi 31 graphics processor configuration indicates two GCD (graphic core crystal) and one MCD (crystal with multiple caches). Each GCD has 3 shader engines (only 6), and each shader engine has 2 shader array (2 on SE / 6 on GCD / total 12). Each shader array consists of 5 WGP (10 on SE / 30 on GCD / total 60), and each WGP includes 8 modules of SIMD32 with 32 ALU (40 SIMD32 on SA / 80 on SE / 240 on the GCD / 480 total). These SIMD32 blocks in the aggregate are 7680 nuclei on GCD and 15360 nuclei as a whole.

MCD Navi 31 (RDNA 3) will be associated with two GCDs through the next generation Infinity Fabric interconnect and will have 256-512 MB of Infinity Cache. Each graphics processor should also have 4 memory connections (32-bit). Total 8 32-bit memory controllers for the 256-bit bus interface.

Thus, based on the intended information, the flagship video card in the Radeon RX 7000 line, AMD RADEON RX 7950 XT will use the flagship configuration of the NAVI 31 graphics processor, maintaining a total of 15360 streaming processors with a clock frequency of 2.5 GHz. We do not know whether it is a maximum clock frequency, but it is 11% more than that of the Radeon RX 6900 XT, and provides 38.4 teraflops of the effective computing power FP32. It is 67% more computing power compared to RX 6900 XT. The card will also have a 200 W TBP higher than that of 6900 XT with a TBP 500 W rating, which is also 67% more.

As for the memory configuration, it is expected that AMD Radeon RX 7950 XT will have twice the greater memory capacity - 32 GB compared to 16 GB at the current flagship. The card will save its 256-bit memory bus interface, but faster (21 Gbps) GDDR6 crystals can allow AMD to achieve internal bandwidth above 512 GB / s (up to 672 GB / s). As for the Infinity Cache design, it is also doubled thanks to 512 MB on board the NAVI graphics processor 31. These characteristics are monstrous and enough to cope with the NVIDIA GeForce RTX 40 ADA Lovelac line.

Another thing I wanted to add is what we heard from our own sources that AMD does not plan to receive a new standard of 16-pin (12 + 4) connector in the near future or at least on their Radeon series video cards RX 7000. The reason for which we was told is that AMD believes that it is not yet stable, but it seems that the design AMD for the 7000 series has been completed before the standard is introduced.

AMD RDNA graphics processor (generation comparison) pre-(!):

It is expected that the AMD RDNA 3 'NAVI 3X' video card line with the Radeon RX graphics processor will provide a three-time increase in performance compared to existing RDNA proposals 2. This will mean a significant leap in the development of graphics, and now that AMD has already uses the following generation technologies, such Like FSR 2.0 and Raytraction, expect very sharp competition between red and green teams, while the blue team is trying to play. overtake.