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GuideGlossaryIST

IST · Integrated Systems Test

The final commissioning level (L5) that proves all facility systems work together under simulated full load.

Current numbers

~55%single-phase direct-to-chip share of liquid-cooling market — the loop IST load banks cannot exercise at real heat fluxas of 2026 · register ↗
Tier IV ~26 min/yrdowntime the commissioning agent's IST exists to prove (vs Tier III ~1.6 hr/yr)as of 2025 · register ↗
L1–L5electrical commissioning level taxonomy (factory test -> integrated systems test)as of 2025 · register ↗

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