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The 12-Core POWER8 Processor With 76 Tbs IO Bandwidth Integrated V oltage Regula
IBM 12核POWER8处理器采用22nm SOI工艺,集成电压调节器,提供7.6Tb/s I/O带宽和90.5%能效。
22nm SOI, 7.6Tb/s I/O带宽, 90.5%峰值能效
POWER8SOI工艺集成电压调节器谐振时钟能效优化
▸创新点1:集成数字控制微调节器电压调节技术(系统创新) - 采用分布式数字控制微调节器架构,实现峰值功率效率达90.5%,通过嵌入式PowerPC 405处理器实现每核动态电压频率调整(DVFS),显著提升能效。
▸创新点2:宽频率范围谐振时钟设计(电路创新) - 在13个时钟网格中应用谐振时钟技术,实现最低4%的功耗节省,支持处理器在不同负载条件下的高效频率切换。
▸创新点3:脉冲时钟锁存器(电路创新) - 通过统计验证确保鲁棒性,优化时序和功耗效率,减少传统锁存器的延迟和能耗,提升整体处理器性能。
▸创新点4:高带宽I/O接口设计(系统创新) - 集成三种主要接口(包括两种新型弹性接口和嵌入式PCI Gen-3),提供7.6 Tb/s的片外I/O带宽,满足大数据应用的高吞吐需求。
Abstract
POWER8™ is a 12-core processor fabricated in
IBM’s 22 nm SOI technology with core and cache improvements
driven by big data applications, providing 2.5× socket perfor-
mance over POWER7+™. Core throughput is supported by
7.6 Tb/s of off-chip I/O bandwidth which is provided by three
primary interfaces, including two new variants of Elastic Interface
as well as embedded PCI Gen-3. Power ef ficiency is improved with
several techniques. An on-chip c ontroller based on an embedded
PowerPC™ 405 process