AMD’s recently launched Navi 31 “RDNA 3” GPUs may be ready to integrate 3D V-Cache memory for future Radeon RX 7000 graphics cards.
AMD Radeon RX 7000 with 3D V-Cache technology may appear, RDNA 3 “Navi 31” GPUs ready for integration
Semiconductor Packaging Engineer, Tom Wasek, recently dissected the new AMD Radeon RX 7900 XT graphics card (reference model) and made a big discovery. We know that the Radeon RX 7900 XT comes with a disabled MCD chip (5 out of 6 enabled) due to the 20GB memory capacity and 320-bit bus interface versus the 24GB memory capacity and 384-bit bus interface on the main product.
What else can you see? A linear group of “dots” that look remarkably like the protection zones on the X3D, which are on the same pitch 17-18 um. Could they be considering stacked MCD functions (or maybe something else)?
– Tom Wassick (@wassickt) January 27, 2023
But according to Tom, the AMD Navi 31 GPU silicon also shows a bunch of “sports” that look similar to the exclusion zones one might see on X3D parts like the Ryzen 7 5800X3D and The latest Zen 4 based Ryzen 7000 X3D parts. These block zones are said to be the same as 17-18 um, and the first possibility as to why they appear on Radeon RX 7000 GPUs with RDNA 3 GPUs could have something to do with the implementation of 3D V-Cache.
Now, this wouldn’t be the first time we’ve heard about 3D V-Cache integration in AMD’s Radeon RX 7000 GPUs. There were actually reports of AMD featuring 3D V-Cache on their Radeon RX 7000 GPUs a while ago. Angstronomics. The news outlet reports that there is also a stacked 3D solution in the works for AMD Radeon RX 7000 RDNA 3 GPUs and this would double the Infinity cache by 32MB (16MB 0-Hi + 16MB 1-Hi) for a total capacity of 192MB. bytes from the cache.
Now AMD already has large batches of cache on its Radeon RX 7000 RDNA 3 GPUs in the form of Infinity Cache. Doubling that will result in better performance in games that lack cache and while gaming at higher resolutions. Current AMD Ryzen 5000 X3D CPUs have already seen huge performance gains with 3D V-Cache and the same is expected with Ryzen 7000 X3D CPUs. The question remains though, when will AMD introduce its 3D V-Cache parts in the Radeon family?
It looks like AMD will focus on the main lineup first and do a mid-cycle update for the RDNA 3 lineup with faster clocks, better efficiency, and the aforementioned 3D V-Cache. This will be similar to the *950XT update we got with RDNA 2 GPUs, but we’ll definitely get more performance increases this generation of update than the previous ones.
news source: Tomchardwer