AvailableBlackwell2025

B300

Blackwell Ultra standalone GPU. 288GB HBM3e — 1.5× more VRAM than B200. Flagship for extreme-scale AI training.

Technical Specifications

Architecture
Blackwell Ultra
Release Year
2025
Process Node
TSMC 4NP
Form Factor
SXM (dual-die)
VRAM
288 GB HBM3e
Memory Bandwidth
8.0 TB/s
Interconnect
NVLink 5 (1.8 TB/s)
FP16 Performance
2,500 TFLOPS (with sparsity)
FP32 Performance
125 TFLOPS
FP64 Performance
63 TFLOPS
TDP
1,200W
Transistors
208 billion

Best Use Cases

  • Trillion-parameter LLM training
  • Exascale HPC
  • AI factories

Quick Facts

FamilyBlackwell
ArchitectureBlackwell Ultra
Released2025
ProcessTSMC 4NP
Form FactorSXM (dual-die)

Related Blackwell GPUs

B300 — Frequently Asked Questions

What is the B300 GPU used for?

The B300 is best suited for: Trillion-parameter LLM training, Exascale HPC, AI factories.

How much VRAM does the B300 have?

The B300 has 288 GB HBM3e of VRAM.

What is the memory bandwidth of the B300?

The B300 has a memory bandwidth of 8.0 TB/s.

What interconnect does the B300 use?

The B300 uses NVLink 5 (1.8 TB/s).

When was the B300 released?

The B300 was released in 2025.