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KaisHeng (KH) - Zhaoxin
< zhaoxin

Developer Zhaoxin
Manufacturer TSMC
Type Microprocessors
Introduction 2017 (announced)
2018 (launch)
ISA x86
µarch WuDaoKou, LuJiaZui
Word size 64 bit
8 octets
16 nibbles
Process 28 nm
0.028 μm
2.8e-5 mm
Technology CMOS

KaisHeng (KH) is a family of x86 microprocessors developed by Zhaoxin for the Chinese market. This family is primarily targeting server and networking devices.


zhaoxin kh roadmap.jpg

Announced in late 2017 and officially launched in early 2018, the KH series is primarily designed for general-purpose servers. Those chips are fully SoCs solutions that come with an optional I/O extension chipsets.



Main article: WuDaoKou microarchitecture

The KH-20000 (KH-20k) series is based on the WuDaoKou microarchitecture and is fabricated on HLMC's 28 nm process. Those parts all include the following common features:

  • ISA: Everything up to AVX (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, SM3, SM4, and AVX)
  • Tech: VT-x/EPT, TXT
  • Mem: Up 64 GiB of dual-channel 2133 MT/s DDR4
 List of WuDaoKou-based KaisHeng Processors
KH-2580028 December 201788 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
1.8 GHz
1,800 MHz
1,800,000 kHz
KH-2680028 December 201788 MiB
8,192 KiB
8,388,608 B
0.00781 GiB
2 GHz
2,000 MHz
2,000,000 kHz
Count: 2


Main article: LuJiaZui microarchitecture

The KH-30000 is a planned series of processors based on LuJiaZui set to be fabricated on TSMC's 16 nm process.


The KH-40000 is a planned series of processors set to be fabricated on TSMC's 7 nm process.

designerZhaoxin +
first announced2017 +
first launched2018 +
full page namezhaoxin/kaisheng +
instance ofmicroprocessor family +
instruction set architecturex86 +
main designerZhaoxin +
manufacturerTSMC +
microarchitectureWuDaoKou + and LuJiaZui +
nameKaisHeng +
process28 nm (0.028 μm, 2.8e-5 mm) +
technologyCMOS +
word size64 bit (8 octets, 16 nibbles) +