How the dominant measure of infrastructure ROI has changed across three computing eras
Era 1 — 1980s–2010s
Storage & Web
CPU Era
Key Value Metric
Cost per GB
stored / served
Dominant Infra
x86 CPU servers, HDDs, relational databases, CDN
Leaders
Intel, HP, Dell, Oracle
→
Era 2 — 2016–2024
Training & Inference
GPU Era
Key Value Metric
FLOPS per Dollar
(compute throughput)
Dominant Infra
GPU clusters (H100, A100), NVLink, hybrid air/liquid cooling
Leaders
NVIDIA, TSMC, AWS, Azure
→
Era 3 — 2025–present
Agentic Intelligence
AI Factory Era
Key Value Metric
Tokens per Dollar
(intelligence output)
Dominant Infra
AI Factory racks, full liquid cooling, CPO optics, 800V HVDC
Leaders
NVIDIA, TSMC, SK Hynix, Samsung