Amazon EC2 U7i Instances: 896 vCPUs and up to 32 TiB for High Memory Workloads
Briefly

This increased bandwidth allows you to transfer 30 TiB of data from EBS into memory in an hour or less, making data loads and cache refreshes faster than ever before. The instances also support ENA Express with 25 Gbps of bandwidth per flow, and provide an 85% improvement in P99.9 latency between instances.
Compared to the previous generation of EC2 High Memory instances, the U7i instances have twice as many vCPUs, with the cloud provider claiming they can deliver more than 135% compute performance and up to 45% better price performance versus existing instances.
Read at InfoQ
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