Direct-to-chip (DTC) cooling is a liquid cooling method that mounts a cold plate directly on the processor die surface, circulating coolant through internal micro-channels to remove 500–2000W per chip. Compared to traditional air cooling (limited to 25kW per rack) and full immersion cooling (requires custom tanks), DTC offers the best balance of thermal performance, deployment simplicity, and cost for modern AI data centers operating at 60–120kW per rack. ToneCooling manufactures custom DTC cold plates for NVIDIA GB200, H200, AMD MI300X, Intel Xeon, and domestic Chinese processors (MetaX, Sunway). ISO 9001 certified. MOQ 5 pcs.
Last Updated: 2026-04-13 | Author: ToneCooling Thermal Engineering Team
What Is Direct-to-Chip Cooling?
Direct-to-chip (DTC) cooling is a liquid thermal management approach where a sealed cold plate is mounted in direct contact with a processor’s integrated heat spreader (IHS) or bare die. Coolant — typically 50/50 ethylene glycol-water per ASHRAE W55 guidelines — flows through internal micro-channels at 0.5–2.0 LPM, absorbing heat through forced convection and transporting it to a facility cooling loop via a Coolant Distribution Unit (CDU).
DTC cooling achieves thermal resistance of 0.02–0.10°C/W — 10 to 20 times more effective than traditional air-cooled heatsinks (0.5–2.0°C/W). This enables:
- Rack density: 60–120kW per rack (vs 8–25kW for air cooling)
- Energy efficiency: PUE of 1.05–1.15 (vs 1.4–1.6 for air cooling) — 40–60% cooling energy savings
- Noise reduction: Eliminates or reduces server fans, lowering data center noise by 20–30 dB
- Component lifespan: Lower junction temperatures extend CPU/GPU lifespan by 2–3x
DTC vs Air Cooling vs Immersion: Complete Comparison
| Factor | Direct-to-Chip (DTC) | Air Cooling | Single-Phase Immersion | Two-Phase Immersion |
|---|---|---|---|---|
| Max rack power | 60–120kW | 8–25kW | 100–200kW | 100–250kW |
| Thermal resistance | 0.02–0.10°C/W | 0.5–2.0°C/W | 0.05–0.15°C/W | 0.03–0.10°C/W |
| PUE | 1.05–1.15 | 1.4–1.6 | 1.02–1.10 | 1.01–1.08 |
| Server modification | Minimal (add cold plates) | None | Complete redesign | Complete redesign |
| Deployment complexity | Medium | Low | High | Very high |
| Capital cost per rack | $5,000–15,000 | $500–2,000 | $20,000–50,000 | $30,000–80,000 |
| Serviceability | Standard (hot-swap compatible) | Standard | Requires draining | Complex |
| Coolant | Water-glycol | Air | Dielectric fluid | Dielectric fluid |
| OCP/ASHRAE support | Full (OCP standards) | Full | Growing | Limited |
When to Choose Direct-to-Chip Cooling
DTC is the optimal choice when:
- Upgrading existing infrastructure: DTC cold plates can be added to standard servers without complete redesign — unlike immersion which requires custom tanks and server chassis
- AI training clusters: NVIDIA GB200 NVL72 racks generate 120kW — impossible with air, and DTC is the OEM-recommended cooling method
- Budget-conscious deployment: DTC capital cost is 3–5x lower than immersion for equivalent cooling capacity
- Serviceability requirements: DTC allows standard hot-swap server maintenance without draining fluid
- Mixed cooling environments: DTC can coexist with air-cooled servers in the same data center — immersion requires dedicated rooms
ToneCooling DTC Cold Plate Specifications
| Parameter | Aluminum CNC | Copper Vacuum Brazed |
|---|---|---|
| Thermal resistance (1.5 LPM) | 0.08°C/W | 0.04°C/W |
| Max TDP | 300W | 1200W+ |
| Compatible platforms | NVIDIA GB200/H200, AMD MI300X/EPYC, Intel Xeon, MetaX, Sunway | |
| Coolant | 50/50 EGW, DI water per ASHRAE W55 | |
| MOQ | 5 pcs | 50 pcs |
| Prototype delivery | 7–15 days | 15–25 days |
DTC Cooling Market Trends (2026)
- AI infrastructure boom: Global AI server market projected to exceed $150B by 2027, with DTC cooling becoming standard for GPU-dense deployments
- OCP standardization: Open Compute Project liquid cooling specifications accelerating DTC adoption in hyperscale data centers
- Energy regulations: EU Energy Efficiency Directive pushing PUE targets below 1.2, favoring liquid cooling over air
- Domestic Chinese AI: US export restrictions driving demand for DTC cold plates compatible with MetaX, Biren, and Hygon processors
About ToneCooling
ToneCooling is an ISO 9001 certified DTC cold plate manufacturer in Huizhou, Guangdong, China. We produce custom liquid cold plates, vapor chambers, and copper heatsinks. 500,000+ units/year. Australia, North America, Europe support.
Request DTC Cold Plate Quote
➔ Get DTC Cold Plate Quote (48h Response) | info@tonecooling.com | US: +1 (832) 720-7542
Frequently Asked Questions
What is direct-to-chip cooling?
A liquid cooling method mounting a cold plate directly on the CPU/GPU die, circulating coolant through micro-channels to remove 500–2000W per chip. 10–20x more effective than air cooling. Enables 60–120kW rack density.
DTC vs immersion cooling: which is better?
DTC is simpler to deploy (uses existing servers), 3–5x lower capital cost, and allows standard hot-swap maintenance. Immersion offers slightly higher cooling capacity (200kW+ per rack) but requires complete server redesign and custom tanks.
What coolant is used in DTC cooling?
50/50 ethylene glycol-water (EGW) per ASHRAE W55 guidelines. Deionized water for cleanroom environments. Propylene glycol-water for food-grade applications.
How much does DTC cooling cost per rack?
$5,000–15,000 per rack for cold plates and plumbing, plus CDU cost ($15,000–50,000 shared across multiple racks). Payback period: 18–24 months via energy savings of 40–60%.
Does ToneCooling provide DTC cold plates for all GPU platforms?
Yes. NVIDIA GB200, GB300, H200, RTX series. AMD MI300X, EPYC. Intel Xeon. MetaX C500. Sunway SW26010. Biren BR100. Custom OAM and SXM form factors.
Need a Custom Liquid Cold Plate?
Tell us your thermal requirements. Engineering team responds within 48 hours with design proposal and quotation.
Request a Quote →MOQ 5 pcs • Prototype 7-15 days • ISO 9001 Certified
