Scorpio Fabric Switches by Astera Labs: status and timeline

Scorpio Fabric Switches

Fabric switches routing GPUs and accelerators in AI clusters. The X-Series 320 is the industry's largest open switch, engineered with Hypercast and In-Network Compute.

ScalingStage 5 of 5

Shipping Scorpio X-Series 320-lane; P-Series variants in H2 2026 production ramp.

Updated 5 May 2026Checked 10 Oct0 updates this week

Milestones

Next · P-Series production ramp H2 2026; volume scale in 2027

Scorpio portfolio announced with P-Series and X-Series variantsOct 2024Complete.
Scorpio P-Series expands to 320-lane configurationMay 2026Complete.
Scorpio X-Series 320-lane memory-semantic switch shipsMay 2026Complete.
P-Series production ramp H2 2026; volume scale in 2027Target 2026Current milestone.

Most important updates

Scorpio X-Series 320-lane fabric switch ships; in-network compute cuts token costs for agentic AI5 May 2026

Upcoming

2026P-Series production ramp H2 2026; volume scale in 2027 (next)
2026UALink 1.0 silicon reaches labs

Current obstacles

Adoption of open standardsSome customers prefer proprietary fabrics with tighter performance; winning mindshare for UALink depends on real-world performance matching custom solutions.
Manufacturing at scaleAs demand grows, Astera must secure supply chains for high-end silicon and ensure production ramps without bottlenecks.

Physics limits

Signal degradation at distanceHigh-speed electrical signals lose quality over longer cable runs; optical interconnects extend range but add cost and latency.
Power consumption scales with bandwidthEach lane and switch port dissipates power; 320-lane switches require significant cooling infrastructure in data centers.

How it works

3 parts

Switching

Route GPU traffic with minimal latency

Scorpio switches route GPU packets with configurable buffering and priority, optimized to match GPU compute speed.

In-Network Compute

Process data in-flight with Hypercast

Hypercast performs collective operations on data in the switch, cutting communication time for large model training.

Open Standard

Memory-semantic interconnect

Unlike vendor-proprietary fabrics, Scorpio supports open memory-semantic protocols that allow heterogeneous accelerators to interoperate without custom drivers.

Spec sheet

Spec	Scorpio Fabric Switches
X-Series 320 lane count	320 lanes^R (reported)
Q1 2026 revenue	$308.4M^R (reported)

^R reported by the company

Update log

1 update

Tue 5 May

Major: Scorpio X-Series 320-lane fabric switch ships; in-network compute cuts token costs for agentic AIPressHardware

About Astera Labs

The team behind Scorpio Fabric Switches

Astera Labs

AI fabric switches, PCIe, CXL, UALink, Scorpio

Astera Labs designs semiconductor connectivity solutions for AI infrastructure. The company makes fabric switches, signal conditioners, and memory controllers that link GPUs and accelerators in data centers. Founded in 2017, it went public on Nasdaq in March 2024 at a $9.5B valuation (ALAB).

Q1 2026 revenue of $308.4 million, up 93% year-over-year, as demand for AI connectivity accelerates.
Scorpio X-Series 320-lane fabric switch is the industry's largest open, memory-semantic switch for AI clusters.
Collaborating with the UALink Consortium on GPU interconnect standards that support in-network compute and multi-path routing.

asteralabs.com (opens asteralabs.com)Company profile →

Founded: 20179 yrs
Headquarters: United States
Status: Public
Valuation: $9.5Bmarket capMar 2024
Raised: $228M3 rounds
Last round: IPO · $713M20 Mar 2024
Works in: ComputingPhotonics & interconnect
Coverage: 2 programs · 5 updateslatest 5 May 2026checked 10 Oct
Lead investors: FidelityFidelity Management and ResearchSutter Hill VenturesIntel Capital
Partners: NVIDIA (opens nvidia.com)UALink Consortium (opens ualink.org)
Investors: Intel (opens intel.com)
People: Casey Morrison (opens linkedin.com)Co-founderJitendra Mohan (opens linkedin.com)Co-founder, CEOSanjay GajendraCo-founder, President and COO

Spec

Scorpio Fabric Switches

X-Series 320 lane count

320 lanes^R (reported)

Q1 2026 revenue

$308.4M^R (reported)