A100 PCIe 40GB vs RTX PRO 6000 Blackwell

AmperevsBlackwellUpdated 35 days ago

The RTX PRO 6000 Blackwell emerges as the winner for most common AI workloads like LLM inference and fine-tuning. Its 96 GB VRAM, 2000 TFLOPS FP8, and balanced 125 TFLOPS FP16/FP32 outperform the A100's narrower 312 TF16/19.5 TFLOPS profile, while averaging $1.25 per hour versus $1.85 per hour and leveraging 2025 Blackwell architecture for future-proofing.

A100 PCIe 40GB from $0.73/hr

Specifications Compared

SpecA100RTX-PRO-6000-BLACKWELL
TDP400W400W
VRAM40-80 GB96 GB
CUDA Cores6,91221,760
Memory TypeHBM2eGDDR7
ArchitectureAmpereBlackwell
Form FactorsSXM4, PCIePCIe
InterconnectNVLink, PCIe 4.0, InfiniBandNVLink
Tensor Cores432680
FP16 Performance312 TFLOPS125 TFLOPS
FP32 Performance19.5 TFLOPS125 TFLOPS
FP64 Performance9.7 TFLOPS
INT8 Performance624 TOPS2,000 TOPS
Memory Bandwidth2,039 GB/s1,792 GB/s

Performance Analysis

The FP16 performance gap defines key workload suitability: the A100 achieves 312 TFLOPS compared to 125 TFLOPS on the RTX PRO 6000 Blackwell, enabling faster mixed-precision training for large language models where FP16 dominates computations. Conversely, the RTX PRO 6000 Blackwell delivers 125 TFLOPS FP32 against the A100's 19.5 TFLOPS, supporting superior single-precision tasks like scientific simulations or graphics rendering. Its 2000 TFLOPS FP8 capability accelerates inference on quantized models, reducing latency for deployment scenarios. Memory bandwidth favors the A100 at 2039 GB/s over 1792 GB/s, allowing larger batch sizes in memory-bound training runs without spilling to slower system RAM. The RTX PRO 6000 Blackwell counters with 96 GB GDDR7 VRAM versus 40 GB HBM2e, accommodating massive models or longer sequences in inference without model parallelism. Both share 400W TDP, ensuring comparable power efficiency in dense cloud deployments, though Blackwell's newer architecture promises better utilization of advanced features like improved tensor cores.

Live Cloud Pricing

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

A100 PCIe 40GB

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vast.ai
Vast.ai
NVIDIA A100 SXM4 80GB
80GB VRAM
$0.73/GPU/hr
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

Opt for the A100 PCIe 40GB in high-throughput FP16 training workloads, where its 312 TFLOPS outperforms the RTX PRO 6000 Blackwell's 125 TFLOPS, accelerating large model pretraining. Its superior 2039 GB/s bandwidth supports bigger batch sizes in memory-intensive tasks compared to 1792 GB/s. Greater availability across 11 cloud offers versus 5 ensures easier scaling in production environments optimized for Ampere.

When to Choose the RTX PRO 6000 Blackwell

Select the RTX PRO 6000 Blackwell for inference-heavy applications leveraging its 2000 TFLOPS FP8 performance and 96 GB VRAM, which handle larger models than the A100's 40 GB without partitioning. Balanced 125 TFLOPS FP16 and FP32 suit fine-tuning or simulations better than the A100's FP32-limited 19.5 TFLOPS. Lower average pricing at $1.25 per hour versus $1.85 per hour provides cost savings in long-running cloud jobs.

Use Cases

LLM Training
A100 PCIe 40GB

The A100's 312 TFLOPS FP16 significantly exceeds the RTX PRO 6000 Blackwell's 125 TFLOPS, speeding up mixed-precision training for large models. Higher 2039 GB/s bandwidth supports larger batches.

LLM Inference
RTX PRO 6000 Blackwell

RTX PRO 6000 Blackwell's 2000 TFLOPS FP8 and 96 GB VRAM enable efficient quantized inference on massive models, surpassing A100's 40 GB limit. Lower latency suits deployment.

Fine-tuning
Either

A100 excels in FP16-heavy phases at 312 TFLOPS, while RTX PRO 6000 Blackwell's 125 TFLOPS FP32 aids precise adjustments. Choice depends on model size and quantization.

Stable Diffusion
RTX PRO 6000 Blackwell

96 GB VRAM on RTX PRO 6000 Blackwell fits high-resolution generations without swapping, unlike A100's 40 GB. Balanced FP32 at 125 TFLOPS enhances image synthesis.

Scientific Computing
RTX PRO 6000 Blackwell

RTX PRO 6000 Blackwell's 125 TFLOPS FP32 dwarfs A100's 19.5 TFLOPS for simulations. Newer Blackwell architecture optimizes complex numerical workloads.

Frequently Asked Questions

What is the VRAM difference between A100 PCIe 40GB and RTX PRO 6000 Blackwell?

The A100 PCIe 40GB offers 40 GB HBM2e VRAM, while the RTX PRO 6000 Blackwell provides 96 GB GDDR7 VRAM. This allows the Blackwell to handle larger models without partitioning. Bandwidth stands at 2039 GB/s for A100 versus 1792 GB/s for Blackwell.

How do cloud prices compare for these GPUs?

A100 PCIe 40GB starts at $0.60 per hour with an average of $1.85 per hour across 11 offers. RTX PRO 6000 Blackwell begins at $0.59 per hour averaging $1.25 per hour over 5 offers. Blackwell delivers better value for extended use.

Which has higher FP16 performance?

The A100 achieves 312 TFLOPS FP16, outperforming the RTX PRO 6000 Blackwell's 125 TFLOPS. This benefits training workloads. Blackwell counters with 2000 TFLOPS FP8 for inference.

Are their TDPs the same?

Both GPUs consume 400W TDP, ensuring similar power draw in cloud instances. Form factors are PCIe for both, with A100 also supporting SXM4. Interconnects include NVLink on both.

What architectures do they use?

A100 uses Ampere from 2020, while RTX PRO 6000 Blackwell employs Blackwell from 2025. This generational leap brings advanced tensor cores to Blackwell. FP32 is 19.5 TFLOPS on A100 versus 125 TFLOPS on Blackwell.

Is RTX PRO 6000 Blackwell better for inference?

Yes, its 2000 TFLOPS FP8 and 96 GB VRAM excel for low-latency inference on large models. A100's strength lies in 312 TFLOPS FP16 training. Pricing favors Blackwell at $1.25 per hour average.

Which is cheaper to rent, the A100 or the RTX PRO 6000?

Cloud rental prices for both the A100 and RTX PRO 6000 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 PRO 6000?

The A100 has 40 to 80 GB of HBM2e memory. The RTX PRO 6000 has 96 GB of GDDR7 memory.

Can I find A100 and RTX PRO 6000 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 PRO 6000?

The A100 uses the Ampere architecture (2020) while the RTX PRO 6000 uses Blackwell (2025). The A100 delivers 2.5x the FP16 throughput and 1.1x the memory bandwidth of the RTX PRO 6000.

A100 PCIe 40GB vs RTX PRO 6000 Blackwell: 80GB vs 96GB | GPUPerHour