7th Generation Performance
Chipset for the
AMD Athlon? XP
VIA Confidential and Proprietary- 31 Design Wins
“If you want to pick up an Athlon motherboard any time
soon, you really ought to take a look at the KT400
models, Our recommendation is based quite simply on
the high equipment standard and the undisputedly great
performance with DDR333” October 2002
Manufacturer Motherboard Manufacturer Motherboard
Asus A7V8X FIC AN19E, AN19C
MSI KT4V, KT4 Ultra KT4M ECS L7VTA, L7VTM
Gigabyte GA-7VA, GA-7VAXP, DFI AD77 Infinity
GA-7VAXP Ultra AD77 Max
Epox EP-8K9A, Biostar M7VIT
EP-8K9A2
Abit KD-7G, AT7 Max2 Azza KT400-ALH
Acorp 7KT400
Aopen AK77-8X Soltek SL-75FRV
AK77-8X Max, AK77-
8XN
Albatron KX-400 8X Freetech A7F156
Shuttle AK37GT/R Iwill KK400, KK400RS
Soyo SY KT400 Dragon Ultra Jetway Polaris 400
VIA Confidential and ProprietaryVIA Apollo
7th Generation Socket A Chipset From VIA
?
VIA FastStream64? Technology Maximizes
?
Performance with the new AMD Athlon XP 3000+
CPU, and leaves Nforce2 trailing
AGP 8X with VIA Hyperion 4in1 Drivers For
?
Maximum Frame Rates in Doom ‘III’ Generation
Games
First to Market Native Serial ATA support in the
?
VT8237 South Bridge
VIA XXXX Onboard Audio For Surround Gaming
?
VIA Confidential and ProprietaryDualDDR: Cost Without Benefit
?AMD 333MHz FSB is maxed out at 2.7GB/s,
equivalent to the maximum theoretical
bandwidth in a single channel DDR333
configuration
?Dual DDR configurations for the AMD Athlon? XP
are overkill and needlessly raise the cost of the
platform
?The key to performance is the efficiency of the
North Bridge memory controller and CPU
interface
AMD Athlon? XP Theoretical Memory Actual Efficiency
333MHz Front Side Bandwidth bandwidth
Bus Data Capacity (DDR333)
VIA KT333 2700MB/s 2700MB/s 2520MB/s 93%
Nvidia nforce2 2700MB/s 5400MB/s 2599MB/s 48%
Source: tech-report.com, Oct 1st 2002. Benchmark figures: Asus A7N8X (nforce2) vs Epox 8K3A (KT333)
Identical System Configurations, Sisoft Sandra 2002 Memory (ALU)
VIA Confidential and ProprietaryFastStream64? Technology
FastStream64? Technology enables the single
?
channel 64-bit memory controller of the KT400A to
out perform the Nforce2 Chipset in 128-bit mode
VIA FastStream64? Technology uses an expanded
?
array of pretech buffers to reduce latency in the
memory controller, enabling more intelligent
read/write sequencing and extending performance
at a lower transistor cost than dual channel
implementations
KT400A is designed to maximize performance in
?
both synchronous (DDR333/333MHz FSB) &
asynchronous (DDR400/333MHz FSB) modes
VIA Confidential and ProprietaryKT400A North Bridge Summary
Leading Edge Performance
?
Features
200/266/333MHz Front
?
Side Bus
Ultra-fast FastStream64
?
Memory Controller with
200/266/333/400MHz
system bus
Support for up to 4GB
?
High-Speed
DDR200/266/333/400
SDRAM
8X V-Link Architecture
?
Peak bandwidth of
?
533MB/s
AGP 8X with 2.1GB/s of
?
dedicated bandwidth for
the GPU

尊敬的用戶您好！VIA KT400A是一款由 VIA Technologies, Inc.（威盛科技股份有限公司）生產(chǎn)的主板芯片組，專為個人計算機市場設計，特別是在臺式機和服務器領域應用廣泛。KT400A芯片組主要包括南北橋兩部分，其中北橋負責處理CPU、內(nèi)存、AGP接口以及PCI總線等高級功能，南橋則主要負責IDE接口、USB、COM ports、LPT等傳統(tǒng)I/O設備的控制。 產(chǎn)品手冊通常會詳細介紹KT400A芯片組的技術(shù)規(guī)格、特性優(yōu)勢、兼容硬件平臺（如特定類型的處理器、內(nèi)存類型及容量限制）、安裝指導、BIOS設置說明、系統(tǒng)兼容性信息以及常見問題解決方案等內(nèi)容。通過閱讀這份手冊，您將能夠詳細了解如何正確配置和使用基于VIA KT400A芯片組的產(chǎn)品，包括但不限于主板、處理器的選擇、內(nèi)存擴展、顯卡插槽和驅(qū)動程序更新等方面的詳細操作指南。 如果您需要具體的產(chǎn)品手冊內(nèi)容或遇到在使用過程中遇到的問題，請?zhí)峁└敿毜男畔ⅲ覀儗⒑軜芬鉃槟峁┫嚓P(guān)幫助和支持。