Cooling fit
Direct-to-Chip vs Immersion Cooling Fit Checker
Use this fit checker to compare direct-to-chip and immersion cooling against rack density, retrofit difficulty, service model, and hardware constraints.
The output focuses on operational fit because the right cooling path depends on server certification, facility water loop design, maintenance model, and growth plan.
How to use this calculator
Use when a buyer is comparing cooling architectures before committing to a high-density hall, colo cage, or GPU platform.
- 01
Enter the buyer scenario
Start with the editable cooling fit inputs and replace defaults with current quotes, tariffs, engineering values, or buyer assumptions.
- 02
Review the modeled outcome
Use the modeled outcome, decision checks, and copied brief to compare the scenario against buyer constraints.
- 03
Verify the result before acting
Check the caveats, source table, and related guides before treating the output as a quote, bid, or final site decision.
Calculator inputs
Scenario defaults are editable. Replace them with current quotes, utility tariffs, tax counsel inputs, or engineering values before relying on the output.
Direct-to-chip fit
Modeled outcome
Direct-to-chip is the stronger first diligence path for these constraints.
Direct-to-chip score
100 pts
Immersion score
15 pts
Decision checks
- Direct-to-chip score: 100
- Immersion score: 15
- Confirm server certification, facility loop design, service workflow, and warranty treatment.
How does the cooling fit model work?
The checker scores direct-to-chip and immersion cooling against seven factors: current density, future density, deployment type, facility loop readiness, server certification, service model, and need for air-cooled fallback. It favors direct-to-chip where buyers need incremental retrofit paths or familiar service workflows, and favors immersion where certified hardware, fluid operations, and very high sustained density are central to the design. Scores are fit indicators for RFP scoping; final feasibility requires facility engineering and server certification review.
What should buyers verify before using the result?
- Final cooling selection requires server vendor certification, facility engineering review, and operations signoff.
- Immersion fit changes if warranties, fluid compatibility, lifting procedures, or service access are not acceptable.
- Direct-to-chip still requires facility-side heat rejection and leak-management planning.
Related guides and tools
Which sources support this cooling fit model?
| Source | Use in this tool | Link |
|---|---|---|
| ASHRAE TC 9.9 liquid cooling white paper | Liquid cooling design context for high-density data centers. | Open |
| ASHRAE 2021 equipment thermal guidelines reference card | Thermal class reference for air and liquid-cooled IT equipment. | Open |
| Data Center Dynamics coverage of ASHRAE liquid cooling guidance | Industry context for newer liquid cooling guidance. | Open |
| Flexential liquid cooling for high-density colocation | High-density colocation and liquid cooling fit context. | Open |
| Netrality high-density colocation for AI and GPU infrastructure | High-density rack power and GPU colocation context. | Open |
| TRG guide to colocation for GPUs | GPU colocation power and density buying criteria. | Open |
| Uptime Institute Global Data Center Survey 2025 | Data center efficiency and operations benchmark context. | Open |
| LBNL PUE comprehensive examination | Foundational PUE metric definition and limitations. | Open |