A100 PCIe 40GB vs L4

AmperevsAda LovelaceUpdated 35 days ago

The A100 PCIe 40GB wins for most common AI training use cases: 312 TFLOPS FP16, 40 GB VRAM, and 2039 GB/s bandwidth deliver unmatched throughput for large models, outweighing L4's efficiency advantages in performance-critical scenarios.

A100 PCIe 40GB from $0.73/hrL4 from $0.33/hr

Specifications Compared

SpecA100L4
TDP400W72W
VRAM40-80 GB24 GB
CUDA Cores6,9127,424
Memory TypeHBM2eGDDR6
ArchitectureAmpereAda Lovelace
Form FactorsSXM4, PCIePCIe
InterconnectNVLink, PCIe 4.0, InfiniBandPCIe 4.0
Tensor Cores432232
FP16 Performance312 TFLOPS121 TFLOPS
FP32 Performance19.5 TFLOPS30.3 TFLOPS
FP64 Performance9.7 TFLOPS0.5 TFLOPS
INT8 Performance624 TOPS242 TOPS
Memory Bandwidth2,039 GB/s300 GB/s

Performance Analysis

A100 excels in FP16 performance with 312 TFLOPS versus L4's 121 TFLOPS: this drives faster deep learning training for models using half-precision arithmetic. L4 counters with superior FP32 at 30.3 TFLOPS over A100's 19.5 TFLOPS, aiding precision-sensitive tasks like simulations. For inference, L4's FP8 capability at 242 TFLOPS enables quantized model serving with reduced memory footprint.

Memory bandwidth defines workload feasibility: A100's 2039 GB/s supports large batch sizes and high-throughput training, minimizing data bottlenecks in multi-GPU setups via NVLink. L4's 300 GB/s restricts it to smaller batches, suitable for latency-focused inference but limiting scale in memory-intensive training. VRAM disparity, 40 GB HBM2e versus 24 GB GDDR6, further favors A100 for massive datasets.

Power efficiency impacts deployment: L4's 72W TDP allows dense server packing, reducing cooling costs compared to A100's 400W.

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
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×)

L4

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vast.ai
Vast.ai
NVIDIA L4
24GB VRAM
$0.33/GPU/hr
Available
RunPod
RunPod
NVIDIA L4
24GB VRAM
$0.39/GPU/hr
TensorDock
TensorDock
NVIDIA L40S
48GB VRAM
$0.55/GPU/hr
Available
RunPod
RunPod
NVIDIA L40
48GB VRAM
$0.82/GPU/hr
RunPod
RunPod
NVIDIA L40S
48GB VRAM
$0.86/GPU/hr

Compare real-time pricing across 25+ providers

When to Choose the A100 PCIe 40GB

Select the A100 PCIe 40GB for large-scale model training and fine-tuning: its 40 GB HBM2e VRAM accommodates expansive LLMs, while 2039 GB/s bandwidth handles high data throughput. NVLink interconnect supports efficient multi-GPU scaling, ideal for HPC clusters despite 400W TDP and $1.85 per hour average pricing.

When to Choose the L4

Choose the L4 for cost-effective inference and edge AI deployments: 72W TDP and $0.32 per hour starting price enable high-density, low-operational-cost setups. FP8 performance at 242 TFLOPS accelerates quantized models, with PCIe 4.0 compatibility suiting standard servers.

Use Cases

LLM Training
A100 PCIe 40GB

A100's 40 GB HBM2e VRAM and 2039 GB/s bandwidth manage massive LLMs effectively. L4's 24 GB GDDR6 limits scale.

LLM Inference
L4

L4's 242 TFLOPS FP8 and 72W TDP support efficient, high-volume serving. Lower $0.32 per hour pricing aids scalability.

Fine-tuning
A100 PCIe 40GB

A100's 312 TFLOPS FP16 accelerates iterations on large models with 40 GB VRAM. Bandwidth ensures smooth data flow.

Stable Diffusion
Either

A100 handles high-resolution generations via superior FP16; L4 suffices for lighter inference at lower cost and power.

Scientific Computing
A100 PCIe 40GB

A100's 312 TFLOPS FP16 and NVLink excel in parallel simulations. Higher VRAM supports complex datasets.

Frequently Asked Questions

Which GPU has higher FP16 performance?

The A100 delivers 312 TFLOPS FP16, surpassing L4's 121 TFLOPS. This benefits training workloads. L4 offers FP8 at 242 TFLOPS for inference.

What is the VRAM difference between A100 and L4?

A100 PCIe 40GB provides 40 GB HBM2e VRAM versus L4's 24 GB GDDR6. A100 suits larger models. Bandwidth is 2039 GB/s for A100 and 300 GB/s for L4.

How do cloud prices compare for A100 vs L4?

A100 PCIe 40GB starts at $0.60 per hour, averaging $1.85 across 11 offers. L4 starts at $0.32 per hour, averaging $0.69 across 16 offers. L4 provides better value for efficiency.

Which has lower power consumption?

L4 consumes 72W TDP, far below A100's 400W. This enables denser deployments. A100 prioritizes peak performance.

Is L4 newer than A100?

L4 uses Ada Lovelace architecture from 2023, while A100 is Ampere from 2020. L4 includes FP8 support at 242 TFLOPS. Both use PCIe 4.0.

Which is better for inference?

L4 excels with 242 TFLOPS FP8 and low 72W TDP for scalable serving. A100's 312 TFLOPS FP16 aids high-throughput needs. Choice depends on model size.

Which is cheaper to rent, the A100 or the L4?

Cloud rental prices for both the A100 and L4 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 L4?

The A100 has 40 to 80 GB of HBM2e memory. The L4 has 24 GB of GDDR6 memory.

Can I find A100 and L4 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 L4?

The A100 uses the Ampere architecture (2020) while the L4 uses Ada Lovelace (2023). The A100 delivers 2.6x the FP16 throughput and 6.8x the memory bandwidth of the L4.

A100 PCIe 40GB vs L4: 2.6x FP16 Gap, 80GB vs 24GB | GPUPerHour