This morning, we learned that a new CPU from AMD has been photographed. It’s an engineering sample of an Epyc Turin. This model is said to feature a total of 192 cores. Clearly, we’re dealing with a CPU designed for the professional/server world.
Epyc Turin: up to 192 cores in Zen 5c!
Apparently, this AMD Epyc variant features a large number of so-called efficient cores. To achieve this, the cores have been compacted, while their frequencies have been lowered compared to Zen 5 cores. Otherwise, they retain hyperthreading and the same instruction sets as the “performance” cores.
Internally, then, we’re dealing with a processor based on multi-die design, or MCM for short. As for some time now, AMD has opted for an I/O die, but updated and adapted to the server world. The latter is surrounded by a total of twelve CCDs. With this model, Complex Die CPUs(CCDs) feature a total of sixteen Zen 5c cores. Finally, as regards cache memory, we find a total of 384 MB of L3. The amount of L3 cache is therefore double that of CPUs with Zen 4c cores, since their CCDs have only 16 MB of L3 per die.
Of course, an alternative with Zen 5 cores will also be offered. The latter is arranged quite differently, with sixteen CCDs each containing eight cores. Naturally, this has a direct impact on L3 cache memory, which is present in greater numbers. With a CPU of 128 cores and sixteen CCDs, we’ll have a maximum of 512 MB of L3 cache.
