SiFive
SiFive designs RISC-V processor cores and licenses them to chipmakers.
SiFive's licensing business runs on billions of shipped cores, while its new data-center chips still have to prove themselves against Arm and Nvidia.
SiFive sells computer chip designs based on an open standard called RISC-V. The company has shipped over 10 billion cores already and has 500+ customers, which is hard to copy because it takes years and billions of dollars to build that kind of track record and customer trust. But SiFive's stock price assumes it will win big in data-center chips (where companies run the internet), and Arm and Nvidia already own most of that market with proven chips in use today. The key question is whether real customers will actually switch to SiFive's new data-center chip designs and put them into production, which won't happen for several years.
Nvidia ships its own RISC-V CPU IP instead of continuing to back SiFive's Performance line. Would show a key investor-partner is bypassing SiFive rather than relying on its silicon.
SiFive files an S-1 or announces an IPO within 6-18 months as CEO indicated. Would confirm the company believes its revenue and data-center traction can withstand public market scrutiny.
- $400M Series G at $3.65B valuation
- 500+ design wins, 10B+ cores shipped
- Revenue grew over 50% YoY in 2025
- Unproven data center CPU roadmap (P870-D, 4th-gen Performance IP) must beat Arm Neoverse and Nvidia in real silicon.
- Revenue figures wildly inconsistent across sources ($38.2M to $190M range), making financial health hard to verify.
- Headcount data conflicts (548 vs ~250 employees) obscure true organizational stability after 2023 layoffs.
- Export control tightening around RISC-V openness could fragment the ecosystem SiFive depends on.
- AI assisted EDA tools could erode the roughly 30% of revenue tied to custom design services.
| Rival | Direction | Evidence |
|---|---|---|
| Arm Holdings | contesting | Arm began selling own manufactured chips March 2026, creating licensee conflict SiFive is exploiting |
| Nvidia | gaining on | Nvidia invested in SiFive's April 2026 round and adopted NVLink Fusion with SiFive Jan 15, 2026 |
| Codasip | gaining on | Codasip, a RISC-V IP peer, entered a formal sale process in 2025 per Jon Peddie Research |
| Tenstorrent | contesting | Bundles RISC-V CPUs with AI accelerators as a packaged compute supplier, a differing model from SiFive's pure IP licensing |
| GlobalFoundries (via MIPS) | gaining on | GlobalFoundries acquired MIPS Technologies in 2025 and pivoted it to RISC-V IP |
- Is SiFive profitable?
- No public profitability data exists. SiFive states 2025 revenue grew over 50% year over year (company claim, July 2026), but third party estimates put 2023 revenue near $38.2M per Sacra, far below its $3.65B April 2026 valuation, suggesting it is still growth stage, not confirmed profitable.
- Who owns SiFive?
- SiFive is privately held and venture backed. Its April 9, 2026 Series G ($400M at a $3.65B valuation) was led by Atreides Management with Nvidia, Apollo Global, T. Rowe Price, Point72 Turion, D1 Capital, Prosperity7, and Sutter Hill Ventures as investors.
- Did SiFive have layoffs?
- Yes. In October 2023, SiFive cut approximately 20% of staff, around 130 people from roughly 650, described as a strategic refocusing away from custom design services toward standard IP licensing, per Reuters and SiliconAngle reporting dated October 24, 2023.
- Could AI replace SiFive's engineers?
- AI design tools may erode the roughly 30% of 2023 revenue tied to custom design services (Sacra estimate), but SiFive's 500+ design wins, 10B+ shipped cores, and foundry integrations like Intel Foundry's Horse Creek are silicon proven track records AI cannot replicate as of mid 2026.
- Who is SiFive's biggest competitor?
- Arm Holdings is the structural incumbent in CPU IP; Arm began selling its own manufactured chips in March 2026, which creates channel conflict with its licensees. SiFive also competes with Andes Technology, Tenstorrent, Ventana Micro, and Codasip in RISC-V IP specifically.
- Is joining SiFive risky right now?
- Headcount data conflicts: Revelio Labs reports 548 employees in December 2025, down 22% from 704 in 2023, while TrueUp cites only about 250 in mid-2026. Post Series G (April 2026), SiFive says it plans to expand engineering teams for data center work.
- 2026-05-12Launched third-gen Performance P550/P570 out-of-order core IP with RVA23 ISA support
- 2026-04-09Closed $400M Series G led by Atreides Management at $3.65B valuation
- 2026-04-01Arm Holdings began selling its own manufactured chips, straining licensee relationships
- 2026-01-15Announced adoption of Nvidia NVLink Fusion in data center compute platforms
- 2024-09-01Unveiled XM Series AI accelerators for edge, IoT, and data center
- 2024-07-01Launched Performance P870-D data center CPU IP, positioned vs Arm Neoverse N2
- 2023-10-24Laid off approximately 20% of staff, about 130 people, in strategic refocusing
- 2022-03-01Closed $175M Series F led by Coatue at roughly $2.3-2.5B valuation
- 2022-03-01Sold OpenFive custom SoC business unit to Alphawave IP Group for $210M
- 2015-01-01Founded by UC Berkeley RISC-V creators including Krste Asanovic
- SiFive Raises $400 Million to Expand AI Data Center Technology (2026-04-09)
- RISC-V chip design startup SiFive nabs $400M investment (2026-04-09)
- SiFive raises $400 million from Atreides, Nvidia for data-center chip technology (2026-04-09)
- SiFive Raises $400 Million to Accelerate High-Performance RISC-V Data Center Solutions (2026-05-11)
- SiFive revenue, funding & news (2026-02-26)
- Investing In Our Next Chapter of Growth (2026-07-06)
- SiFive - Overview, News & Similar companies (2026-07-21)
- SiFive Number of Employees 2026 (2026-06-29)
- Company Profile (2026-06-29)
- SiFive, RISC-V Startup, Reduces Workforce by 20% (2023-10-24)
- RISC-V chip designer SiFive raises $400m in funding round (2026-06-30)
- SiFive to Power Next-Gen RISC-V AI Data Centers with NVIDIA NVLink Fusion (2026-05-11)