Chiplets Come To Gaming GPUs! AMD Radeon RX 7000 “RDNA 3” Graphics Card Unveil Is Only 24 Hours Away, Tune In to The Livestream here
The livestream has a sole focus and purpose, it will mark the unveiling of AMD’s next-generation RDNA 3 GPUs which will power the Radeon RX 7000 series graphics cards. AMD will not only talk about the specifications but also the features and the software ecosystem that will revolve around the new gaming chips. AMD confirmed that its RDNA 3 GPUs will be coming later this year with a huge performance uplift. The company’s Senior Vice President of Engineering, Radeon Technologies Group, David Wang, said that the next-gen GPUs for Radeon RX 7000 series will offer over 50% performance per watt uplift vs the existing RDNA 2 GPUs. Some of the key features of the RDNA 3 GPUs highlighted by AMD will include: Our high end RDNA 3 GPUs will deliver strong increases in performance and performance per watt compared to our current products and include new features supporting high resolution, high frame rate gaming. We look forward to sharing more details later this week. AMD CEO, Dr. Lisa Su
5nm Process Node Advanced Chiplet Packaging Rearchitected Compute Unit Optimized Graphics Pipeline Next-Gen AMD Infinity Cache Enhanced Ray Tracing Capabilities Refined Adaptive Power Management >50% Perf/Watt vs RDNA 2
Live at 4 p.m at: https://t.co/GE89dZgxqF pic.twitter.com/Yuy4BpRz94 — Radeon RX (@Radeon) November 2, 2022 The initial lineup is expected to include two cards based on the flagship Navi 31 GPU, the Radeon RX 7900 XTX 24 GB & the Radeon RX 7900 XT 20 GB. AMD Radeon RX 7900 XTX 24 GB Graphics Card “Rumored” Specifications The AMD Navi 31 GPU, the flagship RDNA 3 chip, would power the next-gen enthusiast cards such as the Radeon RX 7900 XTX/XT graphics card. We have heard that AMD will drop CU (Compute Units) in favor of WGP (Work Group Processors) on its next-gen RDNA 3 GPUs. Each WGP will house dual CU (Compute Units) but with twice the SIMD32 clusters as opposed to just 2 on each CU within RDNA 2. Rumors are that AMD has the option to select between Samsung and TSMC for the 6nm die.
AMD Navi 31 XTX: 12288 Cores, 384-bit Bus, 192 MB Infinity Cache, 308mm2 GPU Die @5nm AMD Navi 21 XTX: 5120 Cores, 384-bit Bus, 128 MB Infinity Cache, 520mm2 GPU Die @7nm
According to the latest information, the AMD Navi 31 GPU with RDNA 3 architecture is expected to offer a single GCD with 48 WGPs, 12 SAs, and 6 SEs. This will give out a total of 12,288 SPs or stream processors. This is an increase of 2.4x in cores compared to the 5120 SPs featured on the Navi 21 GPU. The GPU or the Navi 31 GCD is said to measure 308mm2 and will come packaged on TSMC’s 5nm process node. The Navi 31 GPU will also carry 6 MCD’s which will feature 16 MB Infinity Cache per die and are also likely to carry the 64-bit (32-bit x 2) memory controllers that will provide the chip with a 384-bit bus interface. While this equals 96 MB of Infinity Cache which is lower than the 128 MB featured on the current Navi 21 GPUs, there’s also a 3D-Stacked solution in the works which was pointed out recently and that would double the Infinity Cache with 32 MB (16 MB 0-hi + 16 MB 1-hi) capacities for a total of 192 MB of cache. This is a 50% increase versus the current Navi 21 design and it also makes Navi 31 the first GPU with both, chiplet and 3D stacked designs. These chiplets or MCD’s will be fabricated on TSMC’s 6nm process node and measure 37.5mm2 each. AMD Radeon RX 7900 XT 20 GB Graphics Card “Rumored” Specifications There will also be a cut-down variant that will feature the Navi 31 XT GPU core. This chip is going to pack 42 WGPs or 10,752 cores. That’s 12.5% fewer cores than the full-fat variant. The GPU will also run at slightly lower clock speeds but the power draw will be lower.
AMD Navi 31 XT: 12288 Cores, 320-bit Bus, 160 MB Infinity Cache, 308mm2 GPU Die @5nm AMD Navi 21 XT: 4608 Cores, 256-bit Bus, 128 MB Infinity Cache, 520mm2 GPU Die @7nm
The graphics card will also feature 20 GB of GDDR6 memory across a 320-bit wide bus interface. Since there are only 5 MCDs enabled, the card will end up with 80 MB of Infinity Cache which is 16MB lower than the top variant and a 16.6% decrease.
AMD Radeon RX 7900 Series “Official” Specifications:
Refined Adaptive Power Management & Next-Gen Infinity Cache For RDNA 3 Confirmed
AMD’s SVP & Technology Architect, Sam Naffziger, has already highlighted that the next-generation RDNA 3 GPUs featured on the Radeon RX 7000 GPUs and next-gen iGPUs, will offer a range of new technologies including a refined adaptive power management tech to set workload-specific operation points, making sure that the GPU only utilizes the power required for the workload. The GPUs will also feature a next-gen AMD Infinity Cache which will offer higher-density, lower-power caches and reduced power needs for the graphics memory. AMD will be unveiling its RDNA 3 GPU architecture and the Radeon RX 7000 graphics cards on the 3rd of November while the actual retail launch will take place a few weeks later. Looking ahead, we’re continuing our push for more efficient gaming with AMD RDNA 3 architecture. As the first AMD graphics architecture to leverage the 5nm process and our chiplet packaging technology, AMD RDNA 3 is on track to deliver an estimated >50 percent better performance per watt than AMD RDNA 2 architecture – truly bringing top-of-the-line gaming performance to gamers in cool, quiet, and energy-conscious designs. Contributing to this energy-conscious design, AMD RDNA 3 refines the AMD RDNA 2 adaptive power management technology to set workload-specific operating points, ensuring each component of the GPU uses only the power it requires for optimal performance. The new architecture also introduces a new generation of AMD Infinity Cache, projected to offer even higher-density, lower-power caches to reduce the power needs of graphics memory, helping to cement AMD RDNA 3 and Radeon graphics as a true leaders in efficiency. We’re thrilled with the improvements we’re making with AMD RDNA 3 and its predecessors, and we believe there’s, even more, to be pulled from our architectures and advanced process technologies, delivering unmatched performance per watt across the stack as we continue our push for better gaming. via AMD Countdown
