China's prime server CPU manufacturer, Zhaoxin, has unveiled its next-generation KH-50000 Chiplet CPUs for servers with up to 96 cores.
Zhaoxin Preps 96-Core KH-50000 Chiplet CPUs, Designed For China's Server Ecosystem With Loads of IO Capabilities
Currently, Zhaoxin offers its KH-40000 CPUs as the top server offering. These feature up to 32 cores, 32 threads, 64 MB cache, 8-Channel DDR4 memory support, and 128 PCIe 4.0 lanes. The chips come with chiplet architecture, meaning they are also available in various flavors, with 16 and 12-core offerings, and up to 2.5 GHz clocks. These chips have been out in the market since Q4 2022, but it's time that Zhaoxin releases a new server CPU for China.
At the Shanghai World Expo 2025, Zhaoxin unveiled its next-generation server CPU for China, the KH-50000. These chips are once again based on a chiplet architecture and feature support on an LGA socketed platform. Some of the main talking points about the KH-50000 CPUs are their increased core counts and expanded IO capabilities.
Starting with the specifications, the Zhaoxin KH-50000 Server CPUs will feature up to 96 cores. It is not confirmed if these chips will feature SMT or retain the Non-SMT design of the KH-4000 series but they will improve the IPC by 30% versus their latest architecture. The top SKU will pack up to 384 MB of cache and feature clock speeds of 2.0 GHz base and 3.0 GHz boost. The CPUs will also adopt the new ZPI 5.0 interconnect, which enables dual and quad-socket systems, so four of these CPUs can offer up to 384 cores on a single motherboard. The new interconnect further bolsters the data bandwidth while offering lower latencies and power consumption.
Zhaoxin KH-50000 vs KH-40000 CPUs:
- 96 Cores vs 32 Cores
- 3.0 GHz vs 2.5 GHz Peak Clocks
- 384 MB Cache vs 64 MB Cache
- 12-Channel DDR5 vs 8-Channel DDR4
- 128 PCIe 5.0 Lanes vs 128 PCIe 4.0 Lanes
- ZPI 5.0 Interconnect vs ZPI 3.0 Interconnect
As for IO, Zhaoxin is making a big upgrade with support for 12-Channel DDR5 (ECC) memory, 128 PCIe 5.0 lanes (ZPI/CXL compliant), and 16 PCIe 4.0/SATA/USB lanes. The package and IHS look very similar to the AMD EPYC "Bergamo" lineup. Even the previous KH-4000 CPUs had an IHS and package that looked very similar to AMD's previous EPYC offerings. Their KX-7000 consumer lineup also features an IHS that is very similar to Intel's 12th Gen CPU family.
Zhaoxin hasn't mentioned when the KH-50000 server CPUs will be available, but they will offer a major leap in server performance to China's domestic market. In addition to this, Zhaoxin also unveiled its KX-7000N CPU, which is a follow-up to the KX-7000. This new offering comes packed with a dedicated NPU for faster AI processing.
While KX-7000N simply integrates an NPU within the same SKUs, there are also talks about a next-generation consumer "KX" offering which will be aimed at the "AI PC" segment, offering more CPU cores, stronger computing capabilities, support for PCIe 5.0, a new heterogeneous & high-performance NPU architecture, and much more. Expect more updates from Zhaoxin in the coming quarters.
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