The Definitive Guide toAI Data Centers
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Guide › Glossary › PCIe

PCIe · Peripheral Component Interconnect Express

The standard high-speed bus connecting CPUs, GPUs, NICs and storage inside a server.

Current numbers

64-coreBlueField-4 Arm Neoverse V2 complex (64B transistors, ~6× BF-3 compute); 128 GB LPDDR5; PCIe Gen6as of 2026 · register ↗
~28 / 14 GB/sPCIe 6.0 x4 enterprise SSD sequential read/write (Micron 9650, first Gen6 in mass production), ~5.5M IOPS; E1.S & E3.Sas of 2026 · register ↗
~2.9 PBper SCADA-class flash server: 96 liquid-cooled E3.S drives on PCIe 6.0 (GPU-initiated I/O)as of 2026 · register ↗

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