B300
nvidia · blackwell · 288 GB HBM3e · 1200W TDP
VRAM
288 GB
BF16 TFLOPS
2800
Bandwidth
12000 GB/s
From
$0.00/hr
Spec Sheet
Pricing by Provider
| Provider | On-Demand | Reserved | Spot | Badge |
|---|---|---|---|---|
| nvidia | $0.00/hr | - | - | Cheapest |
Compatible Models (280)
Single GPU (256 models)
Multi-GPU (24 models)
Training Capabilities
Estimated GPU count for full fine-tuning (AdamW, BF16) and QLoRA
| Model Size | Full Fine-Tune | QLoRA |
|---|---|---|
| 7B model | 1 GPU | 1 GPU |
| 13B model | 1 GPU | 1 GPU |
| 70B model | 5 GPUs | 1 GPU |
Energy Efficiency
Estimated tokens/second per Watt for popular models
Similar GPUs
| GPU | VRAM | BF16 TFLOPS | BW (GB/s) | From |
|---|---|---|---|---|
| B200 NVL (pair) | 360 GB | 4500 | 16000 | $10.50/hr |
| B100 SXM | 192 GB | 1750 | 8000 | $4.50/hr |
| GB200 NVL72 (per GPU) | 192 GB | 2250 | 8000 | $6.50/hr |
| GB300 NVL72 (per GPU) | 192 GB | 2500 | 8000 | $7.50/hr |
| B200 SXM | 180 GB | 2250 | 8000 | $4.49/hr |
Methodology Note
Performance estimates for the B300are based on InferenceBench's roofline performance model with CUDA kernel-level optimization including FlashAttention v2 and PagedAttention. Memory calculations account for model weights (288 GB HBM3e available), KV-cache allocation, and activation memory. Throughput predictions use the B300's rated 12000 GB/s memory bandwidth and 2800 BF16 TFLOPS compute capacity as roofline ceilings, with empirical correction factors per GPU architecture (blackwell). See our full methodology.
Frequently Asked Questions
How many AI models can run on B300?
The B300 can run 280 AI models from our database within a single node. Compatible models range across various parameter sizes depending on the quantization precision (BF16, FP8, INT4). Smaller models fit on a single GPU while larger models may require multi-GPU setups up to 8x B300.
What is the B300 inference throughput?
The B300 delivers 2800 BF16 TFLOPS and 5600 FP8 TFLOPS with 12000 GB/s memory bandwidth. Actual inference throughput (tokens/sec) depends on the model size, precision, and batch size. Use our calculator for model-specific throughput estimates.
How much does B300 cost per hour?
The B300 is available starting from $0.00/hour via nvidia. Prices vary by provider and pricing tier (on-demand, reserved, spot). Compare pricing across all providers in the table above.