B300

Blackwell UltraNVIDIA B-SeriesData CenterHBM3e2025NVIDIA

Key Metrics

Architecture
Blackwell Ultra
Launch Date
2025-03-18
CUDA Cores
18,944
Memory
288 GB HBM3e
Memory Bandwidth
4,100 GB/s
TDP/TBP
1,400 W
Interface
PCIe 5.0 x16
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Why It Mattered

B300 is a NVIDIA B-Series accelerator from the Blackwell Ultra generation. Its historical context is data-center deployment rather than gaming, so form factor, memory capacity, interconnect, virtualization features, and server compatibility are the details that make this entry useful.

Related GPUs

Back to NVIDIA B-Series

Previous in series: B200Next in series: GB10
Sources

Sources reviewed: 2026-08-13

This entry is still being source-checked.

Data confidence and source status

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

  • Verified: core specifications and historical notes have been reviewed against listed sources.
  • Partial: core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
  • Imported: spec-only imported entry pending editorial source review.
  • Needs source review: narrative notes are incomplete until reviewed.

Primary / manufacturer sources

  1. Inside NVIDIA Blackwell UltraOfficial Blackwell Ultra memory, bus, and maximum TGP specificationsOpen source
  2. NVIDIA Blackwell Ultra AI Factory Platform Paves Way for Age of AI ReasoningOfficial 2025-03-18 B300 introductionOpen source

Independent reference sources

  1. TechPowerUp GPU SpecsModel-level specification reference for this GPU entryOpen source

Derived datasets and spec dumps

  1. RightNow GPU DatabaseOpen data inventory used for bulk normalization and cross-checking Derived/spec-dump source. Treat as a reference dataset, not independent historical verification.Open source

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