A100 PCIe 40GB vs RTX 5070 Ti

AmperevsBlackwellUpdated 35 days ago

For the most common cloud use case of AI model training and inference, the A100 PCIe 40GB emerges as the clear winner. Its 40 GB HBM2e VRAM, 2039 GB/s bandwidth, and 312 TFLOPS FP16 handle demanding workloads infeasible on the RTX 5070 Ti's 12 GB and 40.6 TFLOPS, justifying the higher $1.85 per hour average cost.

A100 PCIe 40GB from $0.73/hr

Specifications Compared

SpecA100RTX-5070
TDP400W250W
VRAM40-80 GB12 GB
CUDA Cores6,9126,144
Memory TypeHBM2eGDDR7
ArchitectureAmpereBlackwell
Form FactorsSXM4, PCIePCIe
InterconnectNVLink, PCIe 4.0, InfiniBand
Tensor Cores432192
FP16 Performance312 TFLOPS40.6 TFLOPS
FP32 Performance19.5 TFLOPS40.6 TFLOPS
FP64 Performance9.7 TFLOPS
INT8 Performance624 TOPS650 TOPS
Memory Bandwidth2,039 GB/s448 GB/s

Performance Analysis

Key spec differences translate directly to workload suitability. The A100's 312 TFLOPS FP16 vastly exceeds the RTX 5070 Ti's 40.6 TFLOPS, accelerating half-precision training for deep learning models by up to 7.7 times in raw throughput; however, its FP32 at 19.5 TFLOPS trails the RTX 5070 Ti's balanced 40.6 TFLOPS, which favors graphics rendering or single-precision scientific simulations. This FP16/FP32 delta positions the A100 for ML training where mixed precision dominates, while the RTX 5070 Ti suits inference or gaming with uniform performance. Memory bandwidth disparity is stark: 2039 GB/s on the A100 supports batch sizes 4.5 times larger than the RTX 5070 Ti's 448 GB/s, reducing out-of-memory errors for models exceeding 12 GB VRAM and speeding data movement in transformer-based tasks. Higher TDP of 400W on the A100 demands robust cooling compared to 250W on the RTX 5070 Ti, impacting cloud scalability for dense deployments.

Live Cloud Pricing

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

A100 PCIe 40GB

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vast.ai
Vast.ai
2×NVIDIA A100 SXM4 80GB
80GB VRAM
$0.73/GPU/hr
$1.47/hr total (2×)
Available
LeaderGPU
LeaderGPU
8×NVIDIA A100 PCIe 80GB
80GB VRAM
$0.90/GPU/hr
$7.20/hr total (8×)
Available
Vast.ai
Vast.ai
2×NVIDIA A100 SXM4 80GB
80GB VRAM
$1.00/GPU/hr
$2.00/hr total (2×)
Available
Denvr
Denvr
4×NVIDIA A100 PCIe 80GB
80GB VRAM
$1.15/GPU/hr
$4.60/hr total (4×)
Denvr
Denvr
8×NVIDIA A100 SXM4 80GB
80GB VRAM
$1.15/GPU/hr
$9.20/hr total (8×)

Compare real-time pricing across 25+ providers

When to Choose the A100 PCIe 40GB

Select the A100 PCIe 40GB for large-scale AI training or inference requiring over 12 GB VRAM, such as LLMs with billions of parameters. Its 2039 GB/s bandwidth and 312 TFLOPS FP16 enable handling batch sizes that crash on the RTX 5070 Ti, while NVLink and InfiniBand facilitate multi-GPU clusters unavailable on consumer cards.

When to Choose the RTX 5070 Ti

Opt for the RTX 5070 Ti in budget-constrained scenarios like lightweight inference, gaming, or Stable Diffusion generation. At $0.10 per hour average $0.19 per hour, its 40.6 TFLOPS FP32/FP16 and 250W TDP deliver efficiency for tasks fitting within 12 GB GDDR7, outperforming the A100's weaker FP32 in graphics workloads.

Use Cases

LLM Training
A100 PCIe 40GB

The A100's 40 GB VRAM and 312 TFLOPS FP16 support large batch sizes and models exceeding 12 GB, unlike the RTX 5070 Ti.

LLM Inference
A100 PCIe 40GB

High 2039 GB/s bandwidth on the A100 enables faster token generation for production-scale inference; RTX 5070 Ti suits small models only.

Fine-tuning
A100 PCIe 40GB

A100's superior FP16 performance and VRAM capacity accelerate fine-tuning of large models without memory constraints.

Stable Diffusion
RTX 5070 Ti

RTX 5070 Ti's 40.6 TFLOPS FP32/FP16 and lower $0.19 per hour cost optimize image generation tasks fitting in 12 GB GDDR7.

Scientific Computing
A100 PCIe 40GB

A100's 2039 GB/s bandwidth and NVLink interconnect speed simulations requiring high data throughput and multi-GPU scaling.

Frequently Asked Questions

Which GPU has more VRAM: A100 PCIe 40GB or RTX 5070 Ti?

The A100 PCIe 40GB provides 40 GB HBM2e VRAM, compared to 12 GB GDDR7 on the RTX 5070 Ti. This makes the A100 better for memory-intensive AI tasks.

How do cloud prices compare for A100 vs RTX 5070 Ti?

A100 PCIe 40GB starts at $0.60 per hour averaging $1.85 per hour across 11 offers. RTX 5070 Ti begins at $0.10 per hour averaging $0.19 per hour across 2 offers.

Is the RTX 5070 Ti faster than A100 in FP16?

No. The A100 delivers 312 TFLOPS FP16, over 7 times the RTX 5070 Ti's 40.6 TFLOPS, excelling in ML training.

What is the memory bandwidth difference?

A100 offers 2039 GB/s, 4.5 times higher than RTX 5070 Ti's 448 GB/s. This impacts large batch processing significantly.

Which has lower power consumption?

RTX 5070 Ti uses 250W TDP versus A100's 400W. It suits power-sensitive or single-node cloud instances.

Can RTX 5070 Ti replace A100 for training?

Rarely. Its 12 GB VRAM limits it to small models, while A100's 40 GB handles enterprise-scale training.

Which is cheaper to rent, the A100 or the RTX 5070?

Cloud rental prices for both the A100 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 A100 have compared to the RTX 5070?

The A100 has 40 to 80 GB of HBM2e memory. The RTX 5070 has 12 GB of GDDR7 memory.

Can I find A100 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 A100 and the RTX 5070?

The A100 uses the Ampere architecture (2020) while the RTX 5070 uses Blackwell (2025). The A100 delivers 7.7x the FP16 throughput and 4.6x the memory bandwidth of the RTX 5070.