A100 SXM4 40GB vs RTX A2000

AmperevsAmpereUpdated 35 days ago

The A100 SXM4 40GB emerges as the superior choice for most AI workloads on gpuperhour.com, driven by 312 TFLOPS FP16, 40 GB HBM2e VRAM, and 2039 GB/s bandwidth that enable large-scale training and inference unattainable on the RTX A2000. Despite higher $2.63 per hour average cost, its performance justifies investment over the A2000's entry-level 8 TFLOPS and $0.23 per hour pricing.

A100 SXM4 40GB from $0.73/hrRTX A2000 from $0.50/hr

Specifications Compared

SpecA100RTX-A2000
TDP400W70W
VRAM40-80 GB6-12 GB
CUDA Cores6,9123,328
Memory TypeHBM2eGDDR6
ArchitectureAmpereAmpere
Form FactorsSXM4, PCIePCIe
InterconnectNVLink, PCIe 4.0, InfiniBand
Tensor Cores432104
FP16 Performance312 TFLOPS8 TFLOPS
FP32 Performance19.5 TFLOPS8 TFLOPS
FP64 Performance9.7 TFLOPS
INT8 Performance624 TOPS
Memory Bandwidth2,039 GB/s288 GB/s

Performance Analysis

The A100 SXM4 40GB vastly outperforms the RTX A2000 in compute capabilities: its 312 TFLOPS FP16 rate enables rapid AI model training, processing tensor operations 39 times faster than the A2000's 8 TFLOPS. FP32 performance at 19.5 TFLOPS on the A100 supports twice the throughput of the A2000's 8 TFLOPS for general simulations. These deltas mean the A100 accelerates deep learning training cycles significantly, reducing time from days to hours for large datasets.

Memory specifications define workload feasibility: the A100's 40 GB HBM2e and 2039 GB/s bandwidth handle massive batch sizes in LLM training, avoiding out-of-memory errors common on the A2000's 6-12 GB GDDR6 at 288 GB/s. Lower bandwidth on the A2000 limits it to smaller batches or inference on compact models, causing bottlenecks in memory-intensive tasks like Stable Diffusion at high resolutions. Power draw further differentiates them: 400W for A100 demands robust cooling, while 70W A2000 fits low-power servers.

Inference benefits from A100's tensor cores for low-latency serving of large models, whereas A2000 suffices for lightweight endpoints.

Live Cloud Pricing

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

A100 SXM4 40GB

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
Vast.ai
Vast.ai
NVIDIA A100 SXM4 80GB
80GB VRAM
$0.73/GPU/hr
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
NVIDIA A100 SXM4 80GB
80GB VRAM
$1.07/GPU/hr
Available
Denvr
Denvr
8×NVIDIA A100 SXM4 80GB
80GB VRAM
$1.15/GPU/hr
$9.20/hr total (8×)

RTX A2000

ProviderGPU ModelVRAMHost SpecsRegionPriceStatusAction
RunPod
RunPod
NVIDIA RTX A2000
12GB VRAM
$0.50/GPU/hr

Compare real-time pricing across 25+ providers

When to Choose the A100 SXM4 40GB

Select the A100 SXM4 40GB for demanding AI training and HPC applications requiring 312 TFLOPS FP16 and 40 GB VRAM. It excels in multi-GPU setups via NVLink and InfiniBand, ideal for distributed LLM training or scientific simulations with large datasets. Cloud users prioritize its 2039 GB/s bandwidth when scaling batch sizes beyond what 6-12 GB GDDR6 allows.

When to Choose the RTX A2000

The RTX A2000 fits budget inference, prototyping, or edge deployments with its 70W TDP and $0.06 per hour starting price. It handles small-scale fine-tuning or Stable Diffusion at 8 TFLOPS FP16 without needing datacenter infrastructure. Choose it for cost-sensitive tasks where 288 GB/s bandwidth and 6-12 GB VRAM suffice.

Use Cases

LLM Training
A100 SXM4 40GB

A100's 312 TFLOPS FP16 and 40 GB VRAM support massive models and large batches. RTX A2000's 8 TFLOPS and 6-12 GB limit it to tiny scales.

LLM Inference
A100 SXM4 40GB

High 2039 GB/s bandwidth on A100 enables low-latency serving of large LLMs. A2000 suits only small models due to 288 GB/s and lower VRAM.

Fine-tuning
A100 SXM4 40GB

A100's 19.5 TFLOPS FP32 and ample memory accelerate parameter updates on big datasets. A2000 works for lightweight fine-tuning at reduced speed.

Stable Diffusion
Either

A100 handles high-resolution generations with 40 GB VRAM; A2000 manages standard tasks at 6-12 GB for lower cost.

Scientific Computing
A100 SXM4 40GB

A100's NVLink and 312 TFLOPS FP16 optimize parallel simulations. A2000 lacks interconnects for scaled HPC.

Frequently Asked Questions

What is the VRAM difference between A100 SXM4 40GB and RTX A2000?

The A100 offers 40 GB HBM2e VRAM, far exceeding the RTX A2000's 6-12 GB GDDR6. This allows A100 to process larger models without swapping. RTX A2000 suits smaller workloads.

How do FP16 performances compare?

A100 delivers 312 TFLOPS FP16, 39 times the RTX A2000's 8 TFLOPS. This gap accelerates AI training on A100. Inference sees similar boosts for tensor operations.

What are the cloud pricing differences?

A100 SXM4 40GB starts at $1.00 per hour, averaging $2.63 across five offers. RTX A2000 begins at $0.06 per hour, averaging $0.23 over three offers. A2000 provides better value for light use.

Which has higher memory bandwidth?

A100 achieves 2039 GB/s with HBM2e, over seven times the RTX A2000's 288 GB/s GDDR6. Higher bandwidth supports bigger batch sizes on A100. A2000 faces limits in memory-bound tasks.

What are the power requirements?

A100 consumes 400W TDP, needing datacenter power. RTX A2000 uses 70W, ideal for workstations. This makes A2000 more efficient for edge computing.

Can RTX A2000 replace A100 in training?

No, RTX A2000's 8 TFLOPS FP16 cannot match A100's 312 TFLOPS for large training jobs. Use A2000 for prototyping only. A100 scales to production.

Which is cheaper to rent, the A100 or the RTX A2000?

Cloud rental prices for both the A100 and RTX A2000 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 A2000?

The A100 has 40 to 80 GB of HBM2e memory. The RTX A2000 has 6 to 12 GB of GDDR6 memory.

Can I find A100 and RTX A2000 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 A2000?

The A100 uses the Ampere architecture (2020) while the RTX A2000 uses Ampere (2021). The A100 delivers 39.0x the FP16 throughput and 7.1x the memory bandwidth of the RTX A2000.

A100 SXM4 40GB vs RTX A2000: 80GB vs 12GB | GPUPerHour