CXL adds memory capacity, but HBM retains its bandwidth edge

DIGITIMESSeptember 18, 2026en

Growing memory requirements are increasing interest in Compute Express Link (CXL) as a way to add capacity beyond locally attached memory. But engineers from OpenAI and Intel see limits to using the interconnect as a substitute for high-bandwidth memory (HBM) where bandwidth remains critical.

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• OpenAI