A Low-Power Integrated x86-64 and Graphics Processor for Mobile Computing Devices

📋 论文概要

介绍AMD首款Fusion加速处理单元（APU）“Zacate”，将一对x86-64 CPU核心和DirectX 11图形/多媒体控制器集成在单芯片上，并实现统一内存架构，面向移动计算设备提供低功耗高性能方案。

💡 主要创新点

• 将x86-64 CPU与高性能图形处理器集成在同一芯片，实现统一内存架构（UMA），降低功耗和延迟。
• 针对移动设备优化，采用低功耗设计，支持DDR3-1066内存和DirectX 11图形标准。

🏷 关键词

📄 原文摘要

AMD, Hyderabad, India, AMD, Boxborough, MA, 3 AMD, Austin, TX, 4 AMD, Markham, Canada 2 AMD’s first Fusion Accelerated Processor Unit (APU) codenamed “Zacate” (Fig. 15.4.1) combines a pair of x86 CPUs cores codenamed “Bobcat”, 1MB L2 Cache, Client Northbridge (CNB), with a DirectX® 11 Radeon™ HD5000 graphics/multimedia controller on a single die. The CNB provides an interface to a single 64b DDR3 memory channel, which can operate at up to DDR3-1066. The Fusion architecture implements an efficient form of unified memory architecture (UMA) where a portion of system memory is reserved as graphics frame buffer memory. The graphics memory controller (GMC) arbitrates between graphics, video and display memory accesses and presents a well-ordered stream of system memory requests through the CNB over dedicated 256b wide read and write busses. These GMC requests bypass all of the CNB coherency mechanisms

👥 作者与机构

Srinivasa Rao Gutta1, Denis Foley2, Ajay Naini1, Robert Wasmuth3, Don Cherepacha4