FAQs

Accelsius builds NeuCool, a two-phase direct-to-chip liquid cooling system for data centers. Unlike single-phase water or immersion cooling, it uses a dielectric refrigerant that boils directly on the chip to remove far more heat per watt , cooling the highest-TDP AI and GPU processors while cutting energy and water use.

Accelsius works with an ecosystem of partners across the data center liquid cooling supply chain , CDU manufacturers, server OEMs, channel and deployment partners, and colocation providers , to deliver and support NeuCool at rack and facility scale.

You can see NeuCool at the Accelsius lab in Austin, Texas via an onsite or virtual demo, or by applying to the NeuCool Field Trial Program to evaluate it in your own environment. Accelsius also demonstrates at major data center and AI infrastructure events. Request a demo on the contact page.

NeuCool is designed to cool servers from leading OEMs and integrates with the standard rack and server form factors used in AI and high-performance computing.

NeuCool two-phase direct-to-chip cooling is built for the densest workloads, removing heat from processors well beyond the limits of single-phase water cooling and supporting high-kilowatt rack densities for AI and HPC.

NeuCool uses a non-conductive, non-flammable dielectric refrigerant with low global warming potential. Because it’s dielectric, a leak won’t damage electronics, and the fluid vaporizes rather than pooling on hardware , making it safe for direct-to-chip contact with live servers.

NeuCool is designed to work with industry-standard coolant distribution units (CDUs) in both liquid-to-liquid and liquid-to-air configurations, so it integrates into existing data center cooling systems.

Two-phase cooling has a large thermal margin, so NeuCool can run on warm facility water , warmer than typical single-phase direct-to-chip systems require. That means more free-cooling hours, higher efficiency, and more sustainable liquid cooling.

NeuCool moves heat from the chip to a CDU, which rejects it to facility water or another building loop. Facility water goes to the CDU, not the chip , so the dielectric refrigerant, never water, is what contacts your servers.

NeuCool is built for serviceability: dripless quick-disconnects and hot-swappable components let technicians service the system without draining loops or taking racks offline, minimizing downtime in live data centers.

Two-phase direct-to-chip cooling runs at low pressure, so if a breach occurs the dielectric fluid vaporizes instead of pooling on electronics. NeuCool adds continuous monitoring and leak detection, and because the coolant is non-conductive, any escape poses no electrical risk to servers.

Direct-to-chip cooling targets heat right where it’s generated , at the processor , while immersion cooling submerges whole servers in fluid. Versus immersion liquid cooling, direct-to-chip uses far less fluid, works with standard servers and racks, is easier to service, and avoids the weight, retrofit, and maintenance burdens of immersion tanks. Accelsius’s two-phase direct-to-chip approach captures the thermal benefit of two-phase immersion cooling without those trade-offs.

Two-phase cooling lets a dielectric refrigerant boil on the hot chip. Changing from liquid to vapor absorbs a large amount of latent heat at a stable temperature, so two-phase removes far more heat per unit of fluid than single-phase water, which only warms up. That’s why two-phase direct-to-chip cooling can handle the hottest AI processors.

Two-phase cooling is more energy efficient than single-phase liquid cooling. It moves more heat with less fluid and lower flow, cutting pump energy, and its large thermal margin allows warmer facility water and more free-cooling hours , lowering data center PUE and enabling more sustainable liquid cooling.

Accelsius is in volume production and supports deployments from single-rack trials to large multi-rack data center rollouts, with manufacturing capacity scaling to meet AI-driven demand.

Yes. Accelsius welcomes visits at its Austin, Texas headquarters (1835-B Kramer Lane, Suite 2-180), where you can tour the facility and see NeuCool two-phase direct-to-chip cooling live. Request a visit through the contact page or by applying to the NeuCool Field Trial Program.