Israeli fabless semiconductor company Xsight Labs has closed a funding round exceeding $300 million, valuing the firm between $2.5 billion and $2.8 billion post-money. The company, which designs networking silicon specifically for AI data centers, saw its implied worth grow roughly fivefold from a 2021 valuation of approximately $500 million — despite navigating management transitions and layoffs during the intervening period.

The round was led by Fidelity Investments and Atreides Management, with additional backing from serial entrepreneur Avigdor Willenz, who has been instrumental in Xsight's founding and ongoing development. Willenz brings decades of experience in networking silicon, having founded Galileo Technology — later acquired by Marvell — and served as chairman of Mellanox Technologies, which Nvidia acquired in 2020 for approximately $6.9 billion.

Investors are betting that AI data center networking will expand into a $150 billion market by 2028. That projection reflects a shift in compute architecture: large-scale AI training and inference require clusters of thousands of GPUs to operate as a unified system, placing extraordinary demands on the switching and interconnect fabric that links them together. Xsight positions its chips to capture a share of that growth by prioritizing power efficiency and programmability.

Core Technology

Xsight develops two primary product lines: X-series switch chips and E-series data processing units (DPUs), both engineered for AI data center connectivity. The company reports that its chips consume under 200 watts for a 12.8 terabit-per-second switch, positioning power efficiency as a key differentiator. Power draw has become a first-order constraint in AI data center buildouts, with hyperscale operators increasingly limited by grid capacity and cooling infrastructure rather than silicon availability alone.

Rather than relying on fixed-function designs, Xsight emphasizes customer-driven software extensions, making its silicon programmable to accommodate diverse deployment requirements.

The technology's versatility is highlighted by one notable customer win: Xsight has secured a contract to supply network chips for Starlink's next-generation V3 satellites — an application demanding extreme reliability and efficiency.

Competitive Landscape and Market Context

Broadcom and Marvell currently dominate large portions of the data center networking market. Nvidia has also moved into adjacent infrastructure silicon through its BlueField DPU line, while AMD entered the same space with its 2022 acquisition of Pensando. Xsight's value proposition — lower power consumption and competitive cost per token processed relative to industry alternatives — will face scrutiny against incumbents with deeper customer relationships and broader product portfolios.

Xsight itself has reportedly shifted focus away from cryptocurrency applications. For context, the projected $150 billion AI data center networking market by 2028 would represent roughly 5% of crypto's approximate $3 trillion total market capitalization, illustrating the scale of opportunity within this single subsector of AI infrastructure.