The technological support Fries and Cheese tested and presented the advance on the performance and latency of V-Cache 3D, where this last point (latency) was controversial on this technology, so they tested the performance of it with the processor EPYC 7V73X (Milan-X). The test performed on the EPYC Milan-X CPU gives very revealing details and great hope for the performance of AMD and its Ryzen processors.
First Details of V-Cache 3D in Milan-X
Previous leaked preview shows early performance details, where the processor’s 3D V-Cache design stands out AMD EPYC Milan-X, where the results were compared with EPYC 7763 Milan processor
One of the points that stands out from the middle is that the cache performance is exceptional, in addition to the fact that the processor EPYC Milan-X it maintained a better startup clock, compared to the standard Milan processor, despite having slightly lower clock rates on paper.
What we can see in both graphs is a decrease in access time when we hit 32KB of load, which with the main cache makes sense because its layout encourages you to have to load balance past that threshold. The improvements with V-Cache are not impressive, but they are substantial to accommodate more capacity in it and not having to go out to find the information on adjacent cores or even on RAM, which will increase to some extent the IPC and performance. in heavier tasks.
On the other hand, AMD said that a single stack of 3D V-Cache will bring 64MB of L3 cache, so as already mentioned at the time, in the future it is expected that we will be talking about 512MB (64 MB x 8 CCD) of L3, added to the die’s own memory.
What awaits us in Ryzen 7000?
AMD 3D Virtual Cache This gives rise to this type of memory increasing its density in the same space, stacking it, something similar and with a very rough comparison with what we can have in NAND TLC seen in SSDs to store information . The new 3D V-Cache technology is expected to be incorporated into the next AMD Ryzen processors, which will arrive this year, expected in the third quarter, and more and more details on these are already starting to be known, since they were announced at beginning of the year during the CES.
At the moment, the V-Cache 3D implementation is only available in the EPYC processors Milan-X, but it would not be excluded that Zen 4 pleasantly surprise us by incorporating it into their street processors, which would be great for Ryzen which is primarily used by gamers. If so, thanks to V-Cache 3D among other things, we would obtain a 15% improvement in gaming performance -on paper- on average, leaving the Alder Lake-S in a very difficult position.