type: pattern tags: [infrastructure, gross-margin, scale-inflection, neocloud, hardware, depreciation, phase-transition] confidence: medium created: 2026-02-25 source: NBIS earnings-review Q4_FY25 persona: bert provenance: legacy source_analysis_path: null source_paragraph_quote: null source_transcript_span: null source_loss_log_path: null

Infrastructure Gross Margin Phase-Transition at Capacity Inflection

Hardware-intensive AI infrastructure companies can exhibit a step-change (not gradual improvement) in gross margin when deployed capacity transitions from construction/ramp phase to fully operational billing. The jump can be 25-35 percentage points in a single quarter. The mechanism: construction-phase costs (labor, buildout, low utilization) inflate COGS, while operational-phase costs are dominated by power + network + maintenance with D&A reported separately below the gross profit line.

Evidence

• NBIS Q4 FY24: 40.1% gross margin (early ramp, Hopper cluster partially operational)
• NBIS Q1 FY25: 46.7% (transitional)
• NBIS Q2 FY25: 71.4% (Hopper capacity fully operational and billing) — +31pp in two quarters
• NBIS Q3/Q4 FY25: 70%+ sustained for three consecutive quarters
• The 70% GM puts a hardware-intensive infrastructure provider in pure-software GM territory — only possible because D&A ($180.7m in Q4, up 82% QoQ) is below the GM line under their reporting structure

Implication

When evaluating AI infrastructure companies mid-ramp, do not extrapolate current gross margin as representative of steady-state economics. Model the inflection point: (1) when does primary capacity transition from construction to billing? (2) how is D&A classified — above or below gross profit? A company with 40-50% gross margin during ramp could emerge at 65-75%+ once stable. Conversely, do not overprice the step-change — it is a one-time accounting transition, not ongoing margin expansion. After the inflection, track whether margins hold (operating leverage) or compress (pricing pressure, incremental capacity added at lower utilization).