Hygon C86-5G is a 128-core processor with SMT4 and support DDR5-5600
Chinese company Hygon continues to increase its ambitions in the server segment, introducing the flagship C86-5G processor on the roadmap. The chip received 128 cores and 512 threads — due to the use of four-threaded symmetric multithreading (SMT4), rarely found in modern CPUs.
While previous generations of Hygon were built on AMD's Zen architecture (licensed before the sanctions), C86-5G is based on its own next-generation core. The manufacturer claims an IPC improvement of more than 17% compared to the C86-4G. The architecture remains unpublished, but it is clear that this is a major step forward within the Hygon ecosystem.
The processor supports 16-channel DDR5-5600 memory, allowing you to install up to 1 TB of RAM even on standard modules. Support is also declared AVX-512 and CXL 2.0 interface, and this is already a direct benchmark for competition with AMD EPYC 9005 (Turin) and 5th generation Intel Xeon (Emerald Rapids).
Compared to its predecessor, the C86-4G, the new product has doubled the number of cores and quadrupled the number of threads. SMT4 is rarely used - in history, only Intel Xeon Phi and IBM POWER8 have used itThis solution is aimed at large-scale HPC and cloud tasks.
Full specifications have not yet been revealed. However, the C86-5G is expected to retain at least 128 PCIe 5.0 lanes and receive improvements in power supply and cache subsystem. The C86-5G is positioned as an alternative to Western solutions, especially in the context of China's limited access to modern TSMC processes.
