A16 vs H100

AmperevsHopperUpdated 36 days ago

The H100 emerges as the clear winner for most AI and machine learning use cases. Its 1979 TFLOPS FP16, 67 TFLOPS FP32, and 80-94 GB VRAM deliver unmatched performance for training and inference, far surpassing the A16's 4.5 TFLOPS and 16 GB. While the A16 offers value at $0.48/hr average, the H100's capabilities justify $3.19/hr for serious workloads.

A16 from $0.47/hrH100 from $1.90/hr

Specifications Compared

SpecA16H100
TDP250W700W
VRAM16 GB80-94 GB
CUDA Cores2,56016,896
Memory TypeGDDR6HBM3
ArchitectureAmpereHopper
Form FactorsPCIeSXM5, PCIe, NVL
InterconnectNVLink, PCIe 5.0, InfiniBand
Tensor Cores80528
FP16 Performance4.5 TFLOPS1,979 TFLOPS
FP32 Performance4.5 TFLOPS67 TFLOPS
Memory Bandwidth231 GB/s3,350 GB/s

Performance Analysis

The H100's superior compute defines its dominance in AI workloads. Its 1979 TFLOPS FP16 capability dwarfs the A16's 4.5 TFLOPS, enabling faster model training where half-precision is standard. For FP32 tasks like scientific simulations, the H100's 67 TFLOPS vastly exceeds the A16's 4.5 TFLOPS, reducing iteration times significantly.

Memory specifications profoundly impact real-world usage. The H100's 3350 GB/s bandwidth and 80-94 GB HBM3 VRAM support massive batch sizes in training large language models, preventing out-of-memory errors common with the A16's 16 GB GDDR6 and 231 GB/s. Inference benefits from H100's FP8 at 3958 TFLOPS, allowing higher throughput for production serving.

Power and form factors influence deployment. The A16's 250W TDP and PCIe compatibility suit dense, cost-effective inference clusters. The H100's 700W TDP, with SXM5, PCIe, NVL options and NVLink interconnects, excels in scalable, high-performance clusters but demands robust cooling and infrastructure.

Live Cloud Pricing

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

A16

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vultr
Vultr
8×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$3.77/hr total (8×)
Available
Vultr
Vultr
8×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$3.77/hr total (8×)
Available
Vultr
Vultr
8×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$3.77/hr total (8×)
Available
Vultr
Vultr
2×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$0.94/hr total (2×)
Available
Vultr
Vultr
4×NVIDIA A16
64GB VRAM
$0.47/GPU/hr
$1.88/hr total (4×)
Available

H100

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Hyperstack
Hyperstack
4×NVIDIA H100 PCIe
80GB VRAM
$1.90/GPU/hr
$7.60/hr total (4×)
Available
Hyperstack
Hyperstack
2×NVIDIA H100 PCIe
80GB VRAM
$1.90/GPU/hr
$3.80/hr total (2×)
Available
Hyperstack
Hyperstack
8×NVIDIA H100 PCIe
80GB VRAM
$1.90/GPU/hr
$15.20/hr total (8×)
Available
Hyperstack
Hyperstack
NVIDIA H100 PCIe
80GB VRAM
$1.90/GPU/hr
Available
Hyperstack
Hyperstack
8×NVIDIA H100 PCIe
80GB VRAM
$1.95/GPU/hr
$15.60/hr total (8×)
Available

Compare real-time pricing across 25+ providers

When to Choose the A16

The A16 excels in budget-conscious inference scenarios. With pricing from $0.47/hr averaging $0.48/hr, it handles lightweight AI serving like image recognition or small NLP models using its 16 GB VRAM and 4.5 TFLOPS FP16. Users avoid overspending on capabilities unused in low-batch, real-time applications.

Edge and development environments favor the A16. Its 250W TDP and PCIe form factor enable easy integration into standard servers for prototyping, where the H100's 700W and higher costs prove unnecessary.

When to Choose the H100

The H100 is ideal for intensive training and large-scale inference. Its 1979 TFLOPS FP16 and 80-94 GB VRAM manage massive datasets, accelerating LLM training far beyond the A16's 4.5 TFLOPS and 16 GB limits.

High-throughput production demands the H100. The 3350 GB/s bandwidth supports enormous batch sizes, and FP8 at 3958 TFLOPS boosts inference speed, justifying the $3.19/hr average despite higher power at 700W.

Use Cases

LLM Training
H100

The H100's 1979 TFLOPS FP16 and 80-94 GB VRAM handle large-scale training efficiently. The A16's 4.5 TFLOPS and 16 GB VRAM cannot support comparable batch sizes or speeds.

LLM Inference
H100

H100's 3958 TFLOPS FP8 and 3350 GB/s bandwidth enable high-throughput serving. A16 suits only small models due to 231 GB/s and 16 GB limits.

Fine-tuning
H100

H100's 67 TFLOPS FP32 and high VRAM accelerate fine-tuning of large models. A16's matching 4.5 TFLOPS FP16/FP32 proves inadequate for efficiency.

Stable Diffusion
Either

A16 manages basic image generation at 4.5 TFLOPS with low cost. H100 excels for high-resolution or batch jobs via 1979 TFLOPS FP16.

Scientific Computing
H100

H100's 67 TFLOPS FP32 outperforms A16's 4.5 TFLOPS for simulations. NVLink interconnects enhance multi-GPU scalability.

Frequently Asked Questions

Which GPU has more VRAM?

The H100 provides 80-94 GB HBM3 VRAM, compared to the A16's 16 GB GDDR6. This enables larger models on H100 without splitting batches.

How do their prices compare in the cloud?

A16 starts at $0.47/hr with $0.48/hr average across 74 offers. H100 begins at $0.80/hr averaging $3.19/hr over 57 offers.

What is the FP16 performance difference?

H100 delivers 1979 TFLOPS FP16, vastly exceeding A16's 4.5 TFLOPS. This gap accelerates AI training significantly on H100.

Which has higher memory bandwidth?

H100 achieves 3350 GB/s, over 14 times the A16's 231 GB/s. Higher bandwidth supports bigger batches on H100.

Is the H100 more power-hungry?

Yes, H100 has 700W TDP versus A16's 250W. This requires better cooling but enables superior performance.

Can A16 handle LLM inference?

A16 works for small LLMs with 16 GB VRAM and 4.5 TFLOPS. Larger models demand H100's 80-94 GB and 1979 TFLOPS.

Which is cheaper to rent, the A16 or the H100?

Cloud rental prices for both the A16 and H100 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 A16 have compared to the H100?

The A16 has 16 GB of GDDR6 memory. The H100 has 80 to 94 GB of HBM3 memory.

Can I find A16 and H100 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 A16 and the H100?

The A16 uses the Ampere architecture (2021) while the H100 uses Hopper (2022). The H100 delivers 439.8x the FP16 throughput and 14.5x the memory bandwidth of the A16.