Tendrils raises $30M to redesign the CPU from scratch

Tendrils, a startup trying to rethink processor design from the ground up, has raised $30 million in a round led by Benchmark. The company argues that today's CPUs are largely bound to sequential, single-core decisions going back to the 1970s. According to the report, this pressure for backwards compatibility limits the performance of new chips before they are even built.

The company says existing processors carry the weight of complex cache coherency protocols and elaborate reorder buffers. Rather than starting from a sequential design, Tendrils wants to build a processor with thousands of cores operating in parallel. That requires moving beyond the idea of shared mutable memory and linear instruction sequences.

As the article explains, Tendrils is not working on hardware alone. It is also developing Vine, an open-source language designed from the start to target parallel-first architectures. In other words, the idea that hardware and software engineers must work closely together sits at the heart of the project.

The round included participation from Visionaries Club, the UK Sovereign AI Fund, FR8, Antimatter, Cloudberry VC, Conviction, Embassy Ventures and SV Angels. The company also named Jack Altman as its newest board member. The investment signals serious interest in a bet that the future of general-purpose computing lies beyond legacy architectures, though no commercial chip has been released yet.