The Definitive Guide toAI Data Centers
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NVIDIA’s illustrated 1.6 Tb/s optical interface: traditional pluggable ~30 W versus co-packaged optics ~9 W.

~30W → ~9Westimate

Value kindestimate — Interpret this value according to its displayed kind, scope, source, and as-of date.
ScopeIllustrated optical-interface components, excluding the rest of the switch, remote endpoint and fabric. Not measured whole-system useful-work energy.
As ofAugust 18, 2025 vendor illustration
SourceNVIDIA Technical Blog, Scaling AI Factories with Co-Packaged Optics for Better Power Efficiency, August 18, 2025, Figure 3: 20 W DSP + 10 W laser versus 7 W optical engine + 2 W laser, both 1.6 Tb/s. Rounded endpoints imply about 3.3×; the article’s separate 3.5× marketing claim is not that quotient.
Reviewchecking…review by 2026-11-23 · standard cadence
Recorded changeslast 2026-09-16 · 2 revisions tracked
Claim idper-1-6t-link-power-pluggable-dsp-vs-co

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