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AWS Trainium2 (Trn2) logo
hardware Data Center AI Accelerators

AWS Trainium2 (Trn2)

by Amazon Web Services

Amazon's purpose-built training chip with the best price/performance on AWS.

Pros

  • Strong price/performance vs NVIDIA on AWS
  • Deep AWS ecosystem and EFA networking integration
  • UltraServer scale-up to 64 chips

Cons

  • AWS-only; not portable off the cloud
  • Neuron SDK ecosystem narrower than CUDA
  • Best results require code tuning for Neuron

✓ Where it shines / best for

  • Cost-conscious large-model training and inference on AWS
  • Teams already on AWS wanting a GPU alternative via EC2
  • Scaling to UltraServer/UltraCluster for frontier models

✕ Not the best fit for

  • On-premises deployments (AWS cloud only)
  • Workloads that cannot adapt to the Neuron SDK toolchain
  • Edge or on-device inference

Features

  • ✓ AI inference
  • ✓ Data-center scale
  • ✓ LLM
  • ✓ API access
  • ✓ AI Training
  • ✓ Cloud Only
  • ✓ HBM3
  • ✓ High Bandwidth
  • ✓ Jax
  • ✓ Neuron SDK
  • ✓ Pytorch

Pricing

PlanPriceBillingNotes
On-demand (cloud)Usage-basedhourlyAccessed only via Amazon EC2 Trn2 instances (e.g., trn2.48xlarge with 16 Trainium2 chips); priced per instance-hour on AWS. Not sold as standalone silicon. See EC2 on-demand pricing page for current rates.
Savings Plans / ReservedDiscounted usage-based1 or 3 yearsLower effective hourly rate via EC2 Savings Plans or Reserved capacity commitments.
SpotDiscounted usage-basedhourlySpot pricing available at a discount with interruption risk.

Pricing verified from the official source. Prices change often — confirm on the vendor's site before buying.

Specifications

memory1.5 TB HBM3 per instance, 46 TB/s
networking3.2 Tbps EFAv3 (instance)
architectureTrainium2, AWS custom ASIC
fp8_performance20.8 PFLOPS (instance) / 83.2 PFLOPS (UltraServer)
chips_per_instance16 (Trn2) / 64 (UltraServer)
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A full review is being generated for this product and will appear here shortly.

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