At CES 2022, AMD unveiled the Zen 3 architecture desktop processor with 3D Vertical Cache (3D V-Cache) technology, the Ryzen 7 5800X3D. This technology can bring an additional 64MB 7nm SRAM cache for each CCD, increasing the processor's L3 cache capacity from 32MB to 96MB, tripling the capacity. In addition, the EPYC processor code-named Milan-X also uses this technology.
Recently, Chips and Cheese tested the AMD EPYC 7V73X processor with 3D vertical caching technology, involving items such as cache latency, and its test results can also be used as a reference for the consumer-grade Ryzen 7 5800X3D processor.
The AMD EPYC 7V73X processor has 64 cores, 128 threads, a total of 768MB of L3 cache, a base frequency of 2.2 GHz, an acceleration frequency of 3.5 GHz, and a TDP of 280W. The test also used the old AMD EPYC 7773X processor as a comparison, the same 64 cores and 128 threads, but the L3 cache is only 256MB, the base frequency is 2.45 GHz, the acceleration frequency is 3.5 GHz, and the TDP is 280W.
The test results show that after adding 3D vertical caching technology, the latency of L3 caching will increase slightly, about 3 to 4 cycles. The performance gains from larger caches offset the small growth. While the EPYC 7773X has a higher base frequency than the EPYC 7V73X, the EPYC 7V73X actually performs better, thanks to more often higher acceleration frequencies, and the Ryzen 7 5800X3D processor may perform similarly.
According to AMD's presentation at CES 2022, the Ryzen 7 5800X3D processor performs 15% better in 1080P games than the Ryzen 9 5900X, which is comparable to Intel's latest Core i9-12900K, and even more competitive in some games. AMD only offers the Ryzen 7 5800X3D at the consumer level for the time being, and it is uncertain whether there will be a Ryzen 9 5900X3D or Ryzen 9 5950X3D with 3D vertical caching technology in the future.