SIGNALInfrastructure Software·May 27, 2026, 8:30 PMSignal75Short term

SageMaker Notebook Instances now support P5en.48xl instance types

Source: AWS What's New

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We are pleased to announce general availability of Amazon EC2 P5en.48xl instances on SageMaker notebook instances. Amazon EC2 P5en instances feature 8 H200 GPUs which have 1.7x GPU memory size and 1.4x GPU memory bandwidth than H100 GPUs featured in P5 instances. P5en instances pair the H200 GPUs with high performance custom 4 th Generation Intel Xeon Scalable processors, enabling Gen5 PCIe between CPU and GPU which provides up to 4x the bandwidth between CPU and GPU and boosts AI training and inference performance. P5en, with up to 3200 Gbps of third generation of EFA using Nitro v5, shows up

Why this matters
Why now

The continuous race for AI dominance drives rapid iteration in compute infrastructure, with new high-performance GPUs and associated instances becoming available as soon as they mature.

Why it’s important

This release signifies a major step in making cutting-edge H200 GPU instances widely accessible for AI development, enhancing the capabilities for training and inference of large AI models.

What changes

Developers and organizations can now leverage significantly more powerful and efficient hardware through SageMaker notebook instances, accelerating AI research and deployment.

Winners
  • · AWS
  • · AI developers
  • · Companies using SageMaker
  • · NVIDIA
Losers
  • · Cloud providers with less performant offerings
  • · Companies reliant on older GPU architectures
Second-order effects
Direct

Increased performance and efficiency for AI model training and inference workloads on SageMaker.

Second

Faster innovation cycles in AI research and development due to enhanced compute capabilities.

Third

Potential for new, more complex AI applications and models that were previously computationally unfeasible on general-purpose cloud platforms.

Editorial confidence: 95 / 100 · Structural impact: 60 / 100
Original report

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