inference/research
verifiedhigh · 0.90updated 2026-10-05

AMD Instinct MI250X product page - Infinity Fabric link count and peak link bandwidth rows

spec-sheet

Fields

id
sources/w7a-amd-mi250x-product-page-if-link-table
Publisher
AMD
Kind
spec-sheet
Accessed
2026-10-05
notes
Board specification table rows verbatim: 'Bus Type: PCIe 4.0 x16', 'Infinity Fabric(TM) Links: 8', 'Peak Infinity Fabric(TM) Link Bandwidth: 100 GB/s'. The per-link figure is IDENTICAL to MI210's 100 GB/s because both are CDNA 2 at 25 GT/sec - but the link count is 8 rather than 3, so the per-card GPU-to-GPU aggregate differs by more than 2x while the per-link number does not move at all. This pair (MI210 3 links / MI250X 8 links, both 100 GB/s per link) is the cleanest available demonstration that AMD's per-link figure and its link-count figure are independent axes of the fabric, not one number.

Notes

Board specification table rows verbatim: 'Bus Type: PCIe 4.0 x16', 'Infinity Fabric(TM) Links: 8', 'Peak Infinity Fabric(TM) Link Bandwidth: 100 GB/s'. The per-link figure is IDENTICAL to MI210's 100 GB/s because both are CDNA 2 at 25 GT/sec - but the link count is 8 rather than 3, so the per-card GPU-to-GPU aggregate differs by more than 2x while the per-link number does not move at all. This pair (MI210 3 links / MI250X 8 links, both 100 GB/s per link) is the cleanest available demonstration that AMD's per-link figure and its link-count figure are independent axes of the fabric, not one number.

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