xMems puts solid-state cooling chips into mass production

xMems Labs has started mass production of two solid-state cooling chips, the XMC-2400 and XMC-4800, with the first products using them expected on the market next year. The Silicon Valley firm is pitching them primarily at Edge AI devices, smartphones, and smart glasses — not at replacing data hall cooling wholesale.

The company says the chips can also provide targeted cooling inside data centers for components such as solid-state drives and what it calls "other lower-power subsystems." So think spot cooling, not rack-level infrastructure.

How does the technology actually work?

The chips build on xMems' piezoMEMS semiconductor platform. Ultrasonic modulation creates airflow across the silicon chip: cool air gets pulled in, runs through microchannels to chill the hardware, and the waste heat is expelled. No moving parts in the conventional fan sense — it's a monolithic silicon architecture.

That silicon foundation matters for practitioners. Mike Housholder, vice president and general manager of the thermal management business unit at xMems Labs, said the architecture "creates a future path toward co-packaged thermal solutions alongside increasingly powerful Edge AI processors." In plain terms: cooling that could eventually sit in the same package as the chip it's cooling.

What do the numbers look like?

The XMC-4800, the stronger of the two parts, measures 9.93 x 14.35 x 1.13mm. It delivers:

• Up to 48 cubic centimeters of airflow per second
• Up to 1,100 Pa of back pressure
• Roughly 240mW of power consumption

To put that power draw in perspective: 240mW is about a quarter of what a single LED indicator light typically burns, and a rounding error against even a small mechanical fan.

xMems claims real-world testing has produced chip- and system-level temperature reductions between 10-25°C across glasses, smartphone, and SSD devices. The company hasn't detailed the configurations needed to hit those numbers, so treat the upper end with appropriate caution until independent data appears.

Why is this landing now?

Housholder framed the launch around a gap in the market: "Edge AI systems are creating thermal requirements that conventional cooling technologies cannot address," he said. "XMC-2400 and XMC-4800 provide a unique active cooling solution for these next-generation Edge AI devices. As we enter mass production, xMems is ready to support growing customer demand at scale."

The company arrived at cooling from an unusual angle. It started out using the same MEMS platform to build the world's first solid-state speakers, which measure just 1mm thick. The cooling chips are the same core technology repurposed for thermal management — moving air with silicon instead of generating sound.

What does this change for buyers?

For data center operators, don't expect these chips to touch your CRAC units or liquid cooling loops. A device moving 48 cc/s at roughly a centimeter squared is a component-level tool. Where it could earn its keep is on SSDs and low-power subsystems inside the hall that sit in thermal dead zones your airflow design doesn't reach.

For device makers working on Edge AI hardware, the more interesting story is the roadmap. If co-packaged thermal solutions materialize as Housholder suggests, cooling stops being a board-level design problem and becomes a silicon-level one. That's a meaningful shift in how thermally constrained devices get engineered.

The first products featuring the chips are expected next year. Until then, the 10-25°C claim is the number to watch — and to ask for test configurations on.