GB300 vs RTX 4070

Blackwell UltravsAda LovelaceUpdated 36 days ago

The GB300 emerges as the superior choice for AI and machine learning workloads: its 288 GB VRAM, 12000 GB/s bandwidth, and 2250 TFLOPS FP16 dominate training and large-model inference, rendering the RTX 4070 inadequate despite its affordability at $0.19 per hour average.

RTX 4070 from $0.50/hr

Specifications Compared

SpecGB300RTX-4070
TDP1400W200W
VRAM288 GB12 GB
Memory TypeHBM3eGDDR6X
ArchitectureBlackwell UltraAda Lovelace
Form FactorsSXMPCIe
InterconnectNVSwitch, NVLink
FP8 Performance4,500 TFLOPS
FP16 Performance2,250 TFLOPS29.1 TFLOPS
FP32 Performance90 TFLOPS29.1 TFLOPS
FP64 Performance45 TFLOPS
INT8 Performance4,500 TOPS466 TOPS
Memory Bandwidth12,000 GB/s504 GB/s

Performance Analysis

GB300's FP16 performance of 2250 TFLOPS vastly outpaces RTX 4070's 29.1 TFLOPS: this enables training large language models with batch sizes limited only by its 288 GB VRAM, reducing epochs from days to hours on comparable RTX setups. The FP32 delta, 90 TFLOPS versus 29.1 TFLOPS, accelerates scientific simulations and rendering where precision matters, while GB300's FP8 at 4500 TFLOPS optimizes inference for trillion-parameter models.

Memory bandwidth defines scalability: GB300's 12000 GB/s supports massive datasets without bottlenecks, allowing batch sizes up to thousands in training, compared to RTX 4070's 504 GB/s which caps at smaller batches prone to out-of-memory errors on 70B models. RTX 4070 suits single-user inference with its lower 200W TDP, but GB300's NVSwitch interconnect enables multi-GPU clusters for distributed training unattainable on PCIe-limited RTX 4070.

In real-world terms, GB300 handles enterprise inference at scales where RTX 4070 falters: for example, loading a 100B parameter model requires over 200 GB VRAM, feasible only on GB300.

Live Cloud Pricing

Real-time prices from 25+ providers. Updated every 60 seconds.

RTX 4070

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
RunPod
RunPod
NVIDIA GeForce RTX 4070 Ti
12GB VRAM
$0.50/GPU/hr

Compare real-time pricing across 25+ providers

When to Choose the GB300

Opt for the GB300 in large-scale AI training and inference: its 288 GB HBM3e VRAM and 12000 GB/s bandwidth manage trillion-parameter LLMs without sharding, ideal for research labs or cloud providers building inference farms. The 2250 TFLOPS FP16 and 4500 TFLOPS FP8 performance cut training times dramatically for organizations with NVLink-equipped clusters.

When to Choose the RTX 4070

Choose the RTX 4070 for budget-conscious developers or gaming-integrated workflows: at $0.07 per hour starting price, it delivers 29.1 TFLOPS FP16 sufficient for fine-tuning small models or Stable Diffusion on 12 GB VRAM. Its 200W TDP and PCIe form factor enable easy deployment in personal clouds without datacenter infrastructure.

Use Cases

LLM Training
GB300

GB300's 288 GB VRAM and 2250 TFLOPS FP16 support massive batch sizes for trillion-parameter models. RTX 4070's 12 GB limits it to toy datasets.

LLM Inference
GB300

GB300's 4500 TFLOPS FP8 and 12000 GB/s bandwidth enable high-throughput serving of large models. RTX 4070 handles only sub-7B models efficiently.

Fine-tuning
Either

RTX 4070 suffices for 7B-13B models at 29.1 TFLOPS FP16 and low $0.07/hr cost. GB300 excels for larger scales with 288 GB VRAM.

Stable Diffusion
RTX 4070

RTX 4070's 12 GB GDDR6X and 504 GB/s bandwidth generate images quickly for individuals. GB300 overkill for single-instance creative tasks.

Scientific Computing
GB300

GB300's 90 TFLOPS FP32 and NVLink scaling tackle complex simulations. RTX 4070's 29.1 TFLOPS FP32 limits to smaller problems.

Frequently Asked Questions

What is the VRAM difference between GB300 and RTX 4070?

GB300 provides 288 GB HBM3e VRAM, enabling massive models. RTX 4070 offers 12 GB GDDR6X, suitable for smaller workloads.

How does memory bandwidth compare?

GB300 achieves 12000 GB/s for high batch sizes in training. RTX 4070 delivers 504 GB/s, adequate for inference on modest models.

What are the FP16 performance specs?

GB300 reaches 2250 TFLOPS FP16 for rapid AI training. RTX 4070 provides 29.1 TFLOPS, fine for consumer tasks.

Is GB300 available for cloud rental?

No live offers exist for GB300 currently. RTX 4070 has nine providers from $0.07 per hour, averaging $0.19 per hour.

What are the power requirements?

GB300 demands 1400W TDP in SXM form factor for datacenters. RTX 4070 uses 200W in PCIe, ideal for desktops.

Which is better for LLM inference?

GB300 excels with 4500 TFLOPS FP8 and 288 GB VRAM for large-scale serving. RTX 4070 works for small models at lower cost.

Which is cheaper to rent, the GB300 or the RTX 4070?

Cloud rental prices for both the GB300 and RTX 4070 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 GB300 have compared to the RTX 4070?

The GB300 has 288 GB of HBM3e memory. The RTX 4070 has 12 GB of GDDR6X memory.

Can I find GB300 and RTX 4070 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 GB300 and the RTX 4070?

The GB300 uses the Blackwell Ultra architecture (2025) while the RTX 4070 uses Ada Lovelace (2023). The GB300 delivers 77.3x the FP16 throughput and 23.8x the memory bandwidth of the RTX 4070.

GB300 vs RTX 4070: 77.3x FP16 Gap, 288GB vs 12GB | GPUPerHour