AMD shows Zen 2-based 7nm EPYC Rome CPU in action

AMD shows Zen 2-based 7nm EPYC Rome CPU in action

In a head-to-head performance preview, AMD's single-socket EPYC Rome did not only managed to match but actually be faster than Intel's dual-socket platform, showing the potential of a 7nm EPYC Rome CPU based on Zen 2 architecture.

During its Next Horizon event, AMD has also taken the opportunity to release initial information regarding its upcoming datacenter-centric Epyc processors codenamed "Rome". 'Combining world-class performance and a flexible architecture with a robust software platform and the industry's leading-edge ROCm open software ecosystem, the new AMD Radeon Instinct accelerators provide the critical components needed to solve the most hard cloud computing challenges today and into the future.

The boards, which come without video outputs, include 16GB or 32GB of High Bandwidth 2 (HBM2) error correcting code (ECC) memory onboard, while the ECC protection extends to the cache memories internal to the processors. The chiplets will contain nothing but CPU cores, and will be linked via the company's Infinity Fabric interconnect to an on-package 14nm I/O die.

AMD claims a doubling of throughput and support for processing 256-bit floating point instructions, as well as better branch prediction and much better power efficiency. Two such rings can be fitted into a single server, the company has confirmed.

At the same event, AMD chief executive Dr. Lisa Su unveiled the company's next-generation CPU microarchitecture: Zen 2. When it comes to floating point per socket performance, it's a huge 4x leap over the previous generation EPYC processor.

Rome CPUs will have up to 64 cores using a new modular "chiplet" style of architecture rather than the core complexes used by first-gen Zen CPUs.

Performance wise, EPYC Rome will bring 2x the performance per socket and 4x floating point per socket improvements, compared to the previous generation.

AMD is now sampling EPYC "Rome" chips with customers, with the chips expected to launch sometime in 2019. It'll also be the first server CPU with PCIe 4.0 connectivity, which is a big deal when it can be matched with the new 7nm-based Radeon Instinct MI60.

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