SpacemiT

SpacemiT Hangzhou Technology, Co.

Company type	Private
Industry	RISC-V Microprocessors
Founded	2021 (2021)
Headquarters	Hangzhou, China
Products	CPU design, System on a chip
Website	spacemit.com

SpacemiT (Chinese: 进迭时空) is a computing-chip company based in Hangzhou, China, founded in 2021, which is focused on computer processors based on the architecture RISC-V to be used mainly in the area of artificial intelligence (AI CPUs).¹²

In 2024, the company unveiled the Muse Book laptop with the Bianbu OS operating system, based on its Key Stone K1 octa-core RISC-V chip.³⁴ In January 2025, it announced the development of a server processor with up to 64 RISC-V cores, named "VitalStone V100", made on a 12nm-class process technology.¹⁵² The VitalStone V100 supports virtualization, memory virtualization through an IOMMU which complies with the RISC-V architecture and the AXI4-Stream DTI interface.¹⁵

In July 2025, during the RISC-V Summit, the company announced a new system on chip (SoC), called SpacemiT K3, that will be based on the RVA23-profile-compliant X100 core. This core can be assembled in clusters of up to 64 cores. The new SoC is to be available for end-users in 2026.⁶

Under their trademark Muse, SpacemiT also sells various electronic products, including clocks, audio devices, turntables, DVD players, and home appliance.⁷⁸⁹