AMD's 3D V-Cache is one of the CPU technologies that the manufacturer will be promoting. The idea of stacking multiple cache layers for lightweight gaming and processes hopes to boost performance on high-end CPUs, and allow more demanding gamers to focus on more stable frame rates. Based on Zen 4 cores, after the success of the Ryzen 7 5800X3D and during CES 2023, AMD has unveiled its upcoming 3D V-Cache-based processors using its Zen 4 core architecture.
The three Ryzen 7000 models that will carry these 3D V-Cache will be the Ryzen 9 7950X3D, the Ryzen 9 7900X3D and the Ryzen 7 7800X3D. In addition to the additional 64MB of L3 cache, they feature a 120W TDP, higher boost core frequencies than previous X3D chips. In the case of the Ryzen 9 7950X3D, it reaches around 5,7 GHz per core.
At least three Ryzen 7000 models will have 3D V-Cache
At the time, there were performance issues with the Ryzen 7 5800X3D, with slower core clock speeds than its non-3D counterpart, suffering in tasks like rendering, encoding, and any task or workload that didn't benefit from high amounts of of L3 cache. It seems that AMD has taken this into account and has done better for these new models.
It appears that the Ryzen 7000 X3D alleviates much of the previous discrepancies in performance as seen with the Ryzen 7 5800X3D and 5800X, by enabling similar peak turbo clock speeds. Part of this improvement would be due to the use of nodes 5nm from TSMC versus the 3nm Zen 7.
Starting with the flagship SKU, the Ryzen 9 7950X3D shares many of the features of the Ryzen 9 7900X, including 16 cores and 32 threads and a turbo frequency of up to 5,7 GHz. The upgraded chip offers 128 MB of L3 cache, which is comprised of 64 MB of existing pooled L3 cache on the CCDs, and another 64 MB sliced on top with TSV. Its official TDP is much lower than its counterpart, with a 120W chip versus 170W for the regular 7950X. Because of this, the 7950X3D has a lower base core frequency of 4,2 GHz, compared to 4,5 GHz. Although the Ryzen 9 7950X3D has a 300 MHz slower base frequency, having the same 5,7 GHz turbo frequency means that peak performance may be similar.
