SiFive, the UC Berkeley spin-out that helped commercialize RISC-V, closed an oversubscribed $400 million round that values the company at $3.65 billion. Nvidia anchored the round. The message to the market is hard to miss: even the company most associated with proprietary accelerators now wants optionality on an open CPU architecture.
The round comes with a strategic pivot. Historically, SiFive licensed cores to chipmakers. The new capital is earmarked for designing and shipping its own CPUs aimed squarely at AI data centers, competing at the rack level with Arm-based Neoverse and x86 server parts. It is the most credible RISC-V push into hyperscale compute to date.
Expect the first production silicon within twelve to eighteen months. The bet is that AI workloads — increasingly memory-bound, bandwidth-hungry, and dominated by a handful of kernel patterns — are the ideal beachhead for an instruction set unencumbered by licensing or geopolitical friction. Whether SiFive can out-engineer Arm at scale is the other question. The round says at least one very large incumbent is hedging in case they can.