GPUs / NVIDIA B300 / Anatomy
The anatomy of a NVIDIA B300-hour
One NVIDIA B300 rents for $7.25 per hour today. This is where that money goes — the parts that can be sourced, and the residual that can’t.
Anatomy: why it costs this
Everything that has to exist before one B300-hour can be rented — then the arithmetic on the parts that can be priced honestly.
Scroll sideways to follow the chain →
NVIDIA hasn’t published a power spec for this part that meets our bar, so no electricity line is computed — a gap beats a guess.
Verified inputs & sources
- NVIDIA B300 power basis: not published — NVIDIA specifications
- US industrial electricity, average retail: 0.0871 $/kWh — EIA Electric Power Monthly (May 2026, preliminary) (checked 2026-08-10)
- Industry average PUE: 1.54 × — Uptime Institute Global Survey 2025 (weighted avg; ~flat six years) (checked 2026-08-10)
- Best-in-class fleet PUE (Google, 2025): 1.09 × — Google data center efficiency (2025 fleet average) (checked 2026-08-10)
- Water usage effectiveness, evaporative-cooling upper range: 1.8 L/kWh — Operator-reported WUE ranges (~0.2 hyperscaler best → ~1.8 evaporative) (checked 2026-08-10)
- Industrial water price, generous upper bound: 5 $/m³ — Upper-bound assumption (US industrial rates are typically well below this) (checked 2026-08-10)
- Reference context with the arithmetic shown — never fed into the Index or any published series (see methodology).