KKTT226666AA
CChhiippsseett IInnttrroodduuccttiioonn
Confidential and ProprietaryMainstream AMD DDR Elusive
Many Solutions on the Market
n
Chipsets from VIA, AMD, ALi, and SiS
g
No Clear Performance/Feature Set
n
Leader
Motherboard manufacturers hedging
g
their bets, developing for all chipsets
Platform fragmentation slowing the
n
acceptance of DDR on AMD platforms
OEMs, System Integrators, End Users,
g
Channel confused by lack of clear
platform leadership
Confidential and ProprietaryVIA Leads DDR Platform
Development
First available P6 bus DDR chipset
n
VIA Apollo pro266 first available DDR-
g
SDRAM chipset for Intel® Pentium® III
processors
First mass produced K7 bus DDR chipset
n
VIA Apollo KT266 first widely available DDR-
g
SDRAM chipset for AMD Athlon™ and
Duron™ processors
First available P7 bus DDR chipset
n
VIA Apollo P4X266 brings DDR-SDRAM to the
g
Pentium 4 platform for the first time
Confidential and ProprietaryThe Definitive AMD DDR Chipset
VIA Apollo KT266A eliminates the
n
doubt
Performance Driven Design
g
Established Motherboard Base
g
V-MAP Scalability and Flexibility
g
Confidential and ProprietaryKT266A Chipset Block Diagram
Confidential and ProprietaryPerformance Driven Design
Enhanced Memory
n
Controller
Supports DDR200/DDR266
g
Tightened Timings
g
Decreases latency, increases
g
effective bandwidth
Deeper Queuing
g
Allows more instructions “in
g
flight”, hiding latency
penalties
New Abilities
g
Can burst up to eight Quad
g
Words in a clock cycle
Confidential and ProprietaryVIA Modular Architecture Platform
V-MAP
n
Multiple Pin-to-Pin
g
Compatible South Bridge
options
Drop-in replacement for
g
KT266
Future Pin-to-Pin
g
Compatible North Bridge
migration options
Seamless product
n
transitions on a single
motherboard platform
Faster Time to Market
g
Lower Product
g
Development,
Validation, and
Production costs
Confidential and ProprietaryAMD DDR Chipset Comparison
Feature AMD760 KT266A SiS735
North Bridge AMD761 VT8366A SiS735

VIA KT266是一款由 VIA Technologies, Inc.（威盛科技股份有限公司）设计并生产的专用集成电路（Application-Specific Integrated Circuit, ASIC）芯片组，专为台式机主板应用设计，特别是在ATX架构的个人计算机中。它在1990年代中期作为英特尔 Pentium Pro处理器的主流搭配出现，支持高速前端总线以及多通道内存控制器等功能。 产品手册通常会详细介绍KT266的各项特性，包括但不限于： - 芯片组架构和规格：描绘KT266如何与Pentium Pro处理器协同工作，提供对Socket 8针脚接口的支持，以及其前端总线速度（如60MHz或75MHz等）、内存类型（如SDRAM、EDO DRAM）和容量的最大支持。 - BIOS和BIOS更新：包含关于如何通过BIOS设置来配置系统时钟频率、内存刷新率、电源管理选项等重要参数的信息，以及芯片组固件的重要更新说明。 - I/O端口和支持功能：详述主板上的各类I/O插槽（如PCI-E插槽、AGP插槽、IDE/SATA接口、PS/2接口、COM ports等），以及其他附加功能如AC'97音频控制、整合网络接口等。 - 内存控制器详细信息：包括内存条的工作模式选择、内存带宽计算方法以及如何优化内存性能等内容。 - 兼容性和兼容硬件列表：列出KT266支持的各种外围设备和扩展卡类型及其相关驱动程序要求。 由于实际的产品手册可能已经过时，获取最新的技术规格和使用指南建议查阅VIA官网或者第三方电子技术资料库以获得最新版本的相关内容。