NVIDIA B300 (Blackwell Ultra)

FP16 throughput

2.3×10¹⁵ FLOP/s

Memory

251 GB

TDP

1.1 kW

NVIDIA B300 (Blackwell Ultra) is an AI accelerator designed by NVIDIA (GPU), released in August 2025. It is built on a 4 nm process at TSMC, packing 208B transistors. Its release price was $43K.

It delivers 2.3×10¹⁵ FLOP/s of tensor FP16/BF16 throughput, 4.5×10¹⁵ FLOP/s at FP8 and 1.4×10¹⁶ FLOP/s at FP4. It carries 251 GB of memory at 7 TB/s of bandwidth. Its thermal design power is 1.1 kW.

Full record

Manufacturer: NVIDIA
Type: GPU
Release date: Aug 22, 2025
Release price: $43K
Tensor FP16/BF16: 2.3×10¹⁵ FLOP/s
FP8: 4.5×10¹⁵ FLOP/s
FP4: 1.4×10¹⁶ FLOP/s
FP32: 7.5×10¹³ FLOP/s
FP64: 1.2×10¹² FLOP/s
INT8: 1.6×10¹⁴ OP/s
Memory: 251 GB
Memory bandwidth: 7 TB
TDP: 1.1 kW
Process node: 4 nm
Transistors (millions): 208,000
Foundry: TSMC
Tensor cores: 640