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SiFive introduces its first RISC-V server platform for developers

The BigSky SF-2U870 is designed to run Ubuntu 26.04 out of the box with RVA23 standard support.

Updated Aug 25, 2026 · 06:18 UTC1 reports

The short version

  • SiFive has launched the BigSky SF-2U870, a standard 19-inch 2U server aimed at software developers in the RISC-V ecosystem.
  • The new platform supports the RVA23 standard, enabling it to run Ubuntu 26.04 straight out of the box.
  • By serving as a standard, straightforward development system, the BigSky addresses a critical shortage of RVA23-compliant hardware in the RISC-V ecosystem.

Key facts

  • The BigSky SF-2U870 features 32 P870-D cores, 256 GB of DDR5-5600 memory, and 64 lanes of PCIe 5.0.[Hacker News]
  • The platform supports double-wide GPUs up to 450W and includes a 960 GB SATA SSD for the operating system.[Hacker News]
  • The launch comes amid notable shifts in the high-performance RISC-V space, including Qualcomm's acquisition of Ventana in late 2025 and the closure of Condor Computing.[Hacker News]

What remains uncertain

  • SiFive's initial product documentation contains contradictions, listing the system's clock speed as both 2.0 GHz and 2.2 GHz, and its data storage capacity as both a single 3.84 TB SSD and dual 7.68 TB SSDs.[Hacker News]

Sources