Verified90% confidenceFactExact time
NVLink 4.0 has a bidirectional bandwidth of up to 900 GB/s, while the bandwidth of a traditional PCIe bus is approximately 64 GB/s.
7
Sources
90%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
DeepSeek Builds Its Own AI Chips: The Strategic Logic and Challenges Behind Compute Independence
hackernewshackernews7/9/2026
Related Claims
VerifiedNVLink 4.0 (used in the H100) can achieve a unidirectional bandwidth of 900 GB/s.85% similarVerifiedConventional PCIe Gen5 provides approximately 128 GB/s of bidirectional bandwidth.83% similarVerifiedIn the H100 NVLink architecture, 8 GPUs within a single server can be fully interconnected via NVSwitch, achieving a total bandwidth of 900 GB/s, an order-of-magnitude improvement over PCIe 5.0's 64 GB/s.83% similarVerifiedNVLink 4.0 offers a bidirectional bandwidth of up to 900 GB/s, while cross-node InfiniBand HDR offers only approximately 50 GB/s, a gap of nearly 20 times.81% similarUnverifiedNVIDIA's H100 is equipped with 80 GB HBM3, delivers memory bandwidth of 3.35 TB/s, and NVLink 4.0 provides 900 GB/s bidirectional bandwidth.79% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/490319API
curl https://kongchang.com/api/v1/knowledge/claims/490319MCP
get_claim(id=490319)