GeekRadar / The comparison desk

COMPARE.

GPU

NVIDIA

NVIDIA B300

Graphics processor

Video memory: 270 GB^*
Rated memory bandwidth: 7,700 GB/s^*

No matched benchmark results are available for this entry yet.

Processing & platform

Architecture: Blackwell Ultra^*
Process node: 5 nm^*

Memory & storage

Memory options: 144^*
Video memory: 270 GB^*
Video memory type: HBM3e^*
Rated memory bandwidth: 7,700 GB/s^*

Power specifications

Thermal design power: 1,400 W^*

System configuration

Detailed specifications

Specifications 1 · 27 fields

GPU architecture — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

Blackwell Ultra^*

Calculated theoretical peak: BF16 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

2,250^* TFLOPS

Scope and conditions

Calculation: 4.5 / 2^*

Theoretical peak: BF16 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

4,500^* TFLOPS

Calculated theoretical peak: FP16 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

2,250^* TFLOPS

Scope and conditions

Calculation: 4.5 / 2^*

Theoretical peak: FP16 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

4,500^* TFLOPS

Theoretical peak: FP32 non-tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

75^* TFLOPS

Theoretical peak: FP4 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

14,000^* TFLOPS

Theoretical peak: FP4 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

18,000^* TFLOPS

Theoretical peak: FP64 non-tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

1.2^* TFLOPS

Theoretical peak: FP64 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

1.2^* TFLOPS

Calculated theoretical peak: FP6 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

4,500^* TFLOPS

Scope and conditions

Calculation: 9 / 2^*

Theoretical peak: FP6 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

9,000^* TFLOPS

Calculated theoretical peak: FP8 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

4,500^* TFLOPS

Scope and conditions

Calculation: 9 / 2^*

Theoretical peak: FP8 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

9,000^* TFLOPS

Calculated theoretical peak: INT8 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

153.5^* TOPS

Scope and conditions

Calculation: 307 / 2^*

Theoretical peak: INT8 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

307^* TOPS

Calculated theoretical peak: TF32 tensor dense per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

1,100^* TFLOPS

Scope and conditions

Calculation: 2.2 / 2^*

Theoretical peak: TF32 tensor with sparsity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

2,200^* TFLOPS

Physical configuration — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

SXM (HGX 8-GPU baseboard)^*

GPU interconnect bandwidth (NVLink 5) bidirectional — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

1,800^* GB/s

GPU interconnect bandwidth per direction — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

900^* GB/s

PCIe interface declaration — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

PCIe Gen6: 256 GB/s^*

Maximum board power — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

1,100^* W

Peak memory bandwidth per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

7,700^* GB/s

Memory capacity per GPU — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

270^* GB

Memory technology — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

HBM3E^*

GPU model — NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300) — 270 GB HBM3E

NVIDIA Blackwell Ultra GPU (HGX B300 / DGX B300)^*

Specifications 2 · 7 fields

Form factor declaration

HGX / SXM module^*

Graphics model

B300^*

Full graphics designation

NVIDIA B300^*

Manufacturer

NVIDIA^*

Memory capacity declaration

288^* GB

Scope and conditions

native_context

Capacity unit base: Not independently established^*

Memory technology

HBM3E^*

Thermal design power declaration

1,400^* W

Specifications 3 · 28 fields

proc transistors: 104,000 million^*
cores: 18,944^*
tensor cores: 592^*
sm count: 148^*
base clock: 1,665^*
boost clock: 2,032^*
memory clock: 2,000^*
ram: 144^*
name: NVIDIA B300^*
ram type: HBM3e^*
bus width: 4,096^*
bus interface: PCIe 5.0 x16^*
ram bandwidth: 4.10 TB/s^*
fp16 performance: 1.2318^*
fp32 performance: 76.99^*
fp64 performance: 1.2029^*
tdp: 1,400^* W
suggested psu: 1,800^* W
slot width: SXM Module^*
api cuda: 10.3^*
is retail board: No^*
gpi value: 71.93^*
vendor: nvd^*
manufacturer: NVIDIA^*
arch name: Blackwell Ultra^*
card release date: 2025-09-11^*
proc foundry: TSMC^*
proc process size: 5^* nm

* Provisional data