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Introduction of SD7-533 Features
User’s Manual
1-1
Chapter 1. Introduction of SD7-533 Features
1-1. Features of SD7-533 Motherboard
This motherboard is designed for use with Intel’s latest generation of Pentium
®
4 478 pins processors.
Based on the new SiS 645 chipsets (SiS 645 & SiS 961), this motherboard supports 400 MHz system bus
(100 MHz Quad Data Rate) and SiS MuTIOL
®
(Multi-threaded I/O Link) Technology connecting with
SiS 961 MuTIOL
®
Media IO. The Intel
®
Pentium
®
4 processors feature the new NetBurst
Micro-architecture, which enriches the user experience in Net surfing and Multimedia activities.
The AGP interface can support an external AGP slot with AGP 1X/2X/4X capability and Fast Writes. A
high bandwidth and mature SiS MuTIOL
®
technology is incorporated to connect the SiS 645 and SiS 961
MuTIOL
®
Media I/O together. SiS MuTIOL
®
technology is developed into three layers. The
Multi-threaded I/O Link Layer delivers 1.2GB of bandwidth to connect embedded DMA Master devices
and external PCI masters to interface with the Multi-threaded I/O Link layer, the Multi-threaded I/O Link
Encoder/Decoder in the SiS 961 to transfer data with 533 MB/Sec of bandwidth to/from Multi-threaded
I/O Link layer to/from SiS 645, and the Multi-threaded I/O Link Encoder/Decoder in SiS 645 to transfer
data with 533 MB/Sec to/from the memory sub-system to/from the Multi-threaded I/O Link
Encoder/Decoder in SiS 961.
The SiS 645 chipset used in this motherboard supports three DDR DIMMs for a maximum of up to 3 GB.
The memory controller can support both DDR (up to DDR PC 2700, it running on 166 MHz and triggered
by rising and falling edge) and SDR. It can offer bandwidth up to 2.7 GB/Sec under DDR 333 and 1
GB/Sec under PC 133 in order to sustain the bandwidth demand from the host processor, as well as the
multi I/O masters and AGP masters. DDR SDRAM is the newest memory standard, and it provides
maximum translation bandwidth and also greatly improves data transaction delays. This feature improves
whole system performance and speed, especially in multimedia environment applications.
The SD7-533 has a built in Ultra DMA 100 function. This means that it provides speedier HDD
throughput boosting overall system performance. Ultra DMA 100 is the new standard for IDE devices. It
enhances existing Ultra DMA 33 technology by increasing both performance and data integrity. This new
high-speed interface almost doubles the Ultra DMA 66 burst data transfer rate to 100 Mbytes/sec. The
result is maximum disc performance using the current PCI local bus environment. Another benefit is you
can connect four IDE devices in your system through either Ultra DMA 66 or Ultra DMA 100. You will
have more flexibility to expand your computer system.
SD7-533 includes C-Media’s newest 6-channel audio processor chip CMI 8738. The CMI-8738 supports
legacy audio - SBPRO
™
, FM emulator and DLS (Downloadable Sound) -based wavetable music
synthesizer, DirectMusic
™
, and HRTF 3D positional audio functions. The drivers support EAX
®
, as well
as Karaoke Key and Echo functions. It can provide HRTF-based 3D positional audio (C3DX
™
), and uses
HRTF 3D extension technology to enhance traditional HRTF 3D positional audio by substituting
two-speaker system with a four- or six-speaker one (it supports additional 2 ch 16-bit DAC to provide
rear side audio and another 2 ch for subwoofer/Center). It greatly improves HRTF 3D positional audio
quality and successfully removes sweet spot limitations. This way, users can enjoy genuine 3D audio
gaming effects without having to worry about environmental confinements. The ABIT 6-channel kit
called CA-20 (Optional), which includes extra 4-channel signal output jack, two S/PDIF jack (In/Out)
and two USB ports (USB 1.1).
This motherboard also supports five PCI slots and one AGP slot. In addition, this motherboard gives users
enormous flexibility through ABIT’s SoftMenu
™
III with plenty clock frequency selections. The user is
able to alter both the FSB speed and the multiplier to get the CPU processing speed of your choice. This
motherboard has built-in hardware monitoring functions that monitors and protects your computer,