The Definitive Guide toAI Data Centers
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GuideGlossaryCXL

CXL · Compute Express Link

A cache-coherent interconnect over PCIe that lets CPUs, accelerators and memory pools share memory across devices.

Current numbers

>5xCXL KV-pool speedup vs SSD-based caching; ~3.8x vs 200G RDMA; up to 87% less GPU memory usedas of 2026 · register ↗

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