Exaggerated PCI-E Bandwidth Concerns?

Exaggerated PCI-E bandwidth concerns?

Reddit user ziphnor tested 2x RTX 5060 Ti 16GB with vLLM TP=2 and 32k-context prefill. PCIe peaked at 3–4 GB/s, about 40–50% of a PCIe 4.0 x4 link. Prefill reached ~840–850, 1500, and 1600–1700 t/s; the post does not disclose decode bandwidth.

Why it matters: HKR-H/K/R all pass: a myth-busting PCIe bandwidth test with concrete vLLM conditions and numbers. Single Reddit source limits authority, but the named first-person experiment lifts it to the featured threshold.