AMD Zen 5 Server CPU Rumors: Turin With Up To 128 Cores, Turin-X With Up To 1.5 GB L3 Cache, Turin Dense With 192 Zen 5C Cores

In addition to the Ryzen 8000 leak, information regarding AMD's Zen 5 & Zen 5C powered EPYC Turin, Turin-X & Turin-Dense CPUs have been revealed too.

Once again, these new rumors come from Moore's Law is Dead latest roadmap which points out the next-generation EPYC CPU families. The roadmap covers at least five EPYC CPU lineups which can be expected in 2024-2025. AMD has already confirmed Turin as its next-gen EPYC family and it will utilize both Zen 5 and Zen 5C cores,

AMD EPYC Turin & Turn-X With Zen 5: Up To 128 Cores, 4nm Process

Starting with the first family, we have the AMD EPYC Turin (Classic) which will stick with the chiplet design and house up to 128 cores, 256 threads, and TDPs of up to 500W which can be configurable on certain SKUs up to 600W (as revealed in today's Gigabyte leak). In a previous leak, it was shown that the EPYC Turin chips would feature the same L2 and L3 cache as Zen 4 with a small upgrade to the L1 cache.

The major change will come in how AMD arranges the cache on Zen 5 chips which are expected to utilize a "Ladder" hierarchy. The chips are shown to enter production by Q1 2024 & will utilize the TSMC 4nm process node. The actual launch is expected to take place by the third quarter of 2023.

Moving on, we have the AMD EPYC Turin-X chips which will be outfitted with a 3D V-Cache. These chips will retain the 64MB of 3D V-Cache per CCD which totals 1024 MB across the 16 CCDs & 512 MB of standard L3 cache. Totaling up to 1536 MB or 1.5 GB of L3 cache. If we combine the L2 cache which is 1 MB per core or 128 MB in total, that increases to 1664 MB of total cache which is still not including the L1 cache. That's a 33% higher cache compared to the upcoming Genoa-X CPU family.

AMD EPYC Turin Dense & Turin AI With Zen 5C: Up To 192 Cores, 3nm Process

Moving over to the Zen 5C side of things, we first have the AMD EPYC Turin Dense chips which will be succeeding Bergamo. Turin Dense isn't an official name for now but it is expected to utilize the 3nm Zen 5C cores in up to 192 core SKUs. These chips will feature up to 500W TDPs but the most interesting thing is that they are expected to hit production before the standard Turin chips. MLID states that this is due to AMD speeding things to compete directly against Intel's Sierra Forest 144 core chips which are also expected around the same time in the first half of 2024.

There's also a secondary Turin Dense chip known as Turin AI which is expected to feature the same Zen 5C cores but with an AI chiplet. There aren't many details regarding this specific SKU but we can expect Xilinx IP to power the AI chiplet for certain applications. AMD is making AI its no.1 strategic priority and it makes sense to incorporate more AI-specific hardware within its EPYC CPUs for the customers that demand it.

Lastly, there's the follow-up to AMD's Siena CPUs known as Sorano. The AMD EPYC 8004 "Siena" lineup makes use of Zen 4/4C cores on the more mainstream and low-cost/low-TCO/low-power platform known as SP6. It has 6-channel memory support and 96 PCIe gen 5 interconnects. These chips will retain up to 64 cores and 225W TDP and production is expected in the 2H of 2024 with availability sometime in 2025.

AMD has so far announced its upcoming “AMD Data Center and AI Technology Premiere,” which will be the center stage for various server and data center-specific announcements. Definitely expect to hear more about future and upcoming products at the event which is taking place in June.