GPU comparison

B300 vs RTX 5070

Specifications and current cloud pricing, side by side.

Blackwell UltravsBlackwellUpdated 33 days ago

The B300 wins for the most common use case of LLM training because its 2250 TFLOPS dense FP16 and 8000 GB/s bandwidth exceed the RTX 5070 figures by large margins and enable workloads that exceed 16 GB memory capacity.

B300 listed from $0.50/GPU/hrRTX 5070 listed from $0.17/GPU/hr

Right now, from live stock

Specifications Compared

SpecB300RTX 5070
TDP1400W250W
VRAM262-288 GB12-16 GB
CUDA CoresNot published6,144
FP4 (dense)13,500 TFLOPS493.9 TFLOPS
FP8 (dense)4,500 TFLOPS123.5 TFLOPS
Memory TypeHBM3eGDDR7
ArchitectureBlackwell UltraBlackwell
FP16 (dense)2,250 TFLOPS61.7 TFLOPS
Form FactorsSXM6PCIe
INT8 (dense)187.5 TOPS246.9 TOPS
InterconnectNVLink, PCIe 6.0, InfiniBandPCIe 5.0
Tensor CoresNot published192
FP32 Performance75 TFLOPS30.9 TFLOPS
FP64 Performance1.25 TFLOPSNot published
Memory Bandwidth8,000 GB/s672 GB/s
FP4 (with sparsity)18,000 TFLOPS987.8 TFLOPS
FP8 (with sparsity)9,000 TFLOPS246.9 TFLOPS
FP16 (with sparsity)4,500 TFLOPS123.5 TFLOPS
INT8 (with sparsity)375 TOPS493.9 TOPS

Performance Analysis

The B300 records 2250 TFLOPS dense FP16 compared with the RTX 5070 recording 61.7 TFLOPS dense FP16. The same pattern holds for sparse figures where the B300 records 4500 TFLOPS with sparsity in FP16 against the RTX 5070 recording 123.5 TFLOPS with sparsity in FP16. The FP16 to FP32 ratio on the B300 reaches 2250 to 75 while the RTX 5070 reaches 61.7 to 30.9. Memory bandwidth of 8000 GB/s on the B300 versus 672 GB/s on the RTX 5070 directly influences maximum batch sizes during both training and inference passes. All tensor comparisons remain strictly dense to dense or with sparsity to with sparsity.

Current On-Demand Offers

Cheapest secure on-demand offer per provider that is reported in stock right now, per GPU per hour; multi-GPU instances show the whole-instance price alongside. Deploy opens the DeployGPU console for providers on the platform, otherwise the provider's own site. Stock is rechecked every minute.

B300

ProviderRegionGPUsPer GPU / hrInstance / hrDeploy
RunPodglobal1$0.50—Deploy

1 provider in stock, 2 offers (cheapest per provider shown). All B300 offers, price history and alerts

RTX 5070

RTX 5070 is not offered on-demand by any provider we track right now. See the RTX 5070 rental page for last-seen listed prices and a price alert.

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When to Choose the B300

The B300 suits LLM training runs that require 2250 TFLOPS dense FP16 and 8000 GB/s bandwidth to accommodate models exceeding the 12 to 16 GB limit of the RTX 5070. Organizations running multi node clusters benefit from its NVLink interconnect and 1400W TDP envelope when scaling beyond single device constraints.

When to Choose the RTX 5070

The RTX 5070 suits inference tasks that fit within 12 to 16 GB of GDDR7 memory and operate under a 250W TDP limit. Its 246.9 TOPS dense INT8 rating supports compact deployments where power and form factor constraints outweigh raw FP16 capacity.

Use Cases

LLM Training
B300

The B300 supplies 2250 TFLOPS dense FP16 and 8000 GB/s bandwidth that exceed the RTX 5070 values and support models larger than 16 GB.

LLM Inference
B300

The B300 provides 4500 TFLOPS with sparsity in FP8 and 8000 GB/s bandwidth that allow larger batch sizes than the RTX 5070.

Fine-tuning
B300

The B300 records 2250 TFLOPS dense FP16 which enables parameter updates on models that surpass the 16 GB memory capacity of the RTX 5070.

Stable Diffusion
RTX 5070

The RTX 5070 delivers 493.9 TFLOPS dense FP4 within a 250W TDP and 12 to 16 GB memory envelope that matches typical image generation workloads.

Scientific Computing
B300

The B300 lists 75 TFLOPS FP32 and 8000 GB/s bandwidth that accelerate large matrix operations beyond the RTX 5070 limits.

Frequently Asked Questions

What is the memory bandwidth difference between the two GPUs?▾

The B300 achieves 8000 GB/s bandwidth whereas the RTX 5070 achieves 672 GB/s bandwidth.

How do the power requirements compare?▾

The B300 lists a 1400W TDP and the RTX 5070 lists a 250W TDP.

What interconnect options exist on each device?▾

The B300 supports NVLink and PCIe 6.0 while the RTX 5070 supports PCIe 5.0.

Which device provides more INT8 performance with sparsity?▾

The RTX 5070 provides 493.9 TOPS with sparsity in INT8 while the B300 provides 375 TOPS with sparsity in INT8.

Which is cheaper to rent, the B300 or the RTX 5070?▾

Cloud rental prices for both the B300 and RTX 5070 vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.

How much VRAM does the B300 have compared to the RTX 5070?▾

The B300 has 262 to 288 GB of HBM3e memory. The RTX 5070 has 12 to 16 GB of GDDR7 memory.

Can I find B300 and RTX 5070 GPUs available to rent right now?▾

Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.

What is the main difference between the B300 and the RTX 5070?▾

The B300 uses the Blackwell Ultra architecture (2025) while the RTX 5070 uses Blackwell (2025). The B300 delivers 36.5x the dense FP16 throughput (2,250 vs 61.7 TFLOPS, both without sparsity) and 11.9x the memory bandwidth of the RTX 5070.

Rent these GPUs

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Related comparisons

How this page is made

  • Specifications come from the NVIDIA, AMD and Intel datasheets for the B300 and the RTX 5070. Dense and sparse throughput are listed separately.
  • Prices and availability are live: every offer shown is an in-stock, on-demand listing from a provider we track, rechecked every minute.
  • The written comparison (overview, performance notes, when to choose each card, verdict, use cases and FAQ) was drafted with an AI model from the specification table above and passed an automated check that rejects any figure not in that table. It was last generated on . It contains no prices; those are always read live.
  • Read how we collect the data, or report an error on this page.

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