The SiS SiSM661MX is a chipset designed by Silicon Integrated Systems Corp. (SiS), a Taiwanese company known for manufacturing integrated circuits and chipsets for motherboards and other devices. Here's an overview of the SiSM661MX chipset:

Chipset Overview

Manufacturer: Silicon Integrated Systems Corp. (SiS)
Chipset Name: SiSM661MX
Supported Processors: Intel Pentium 4, Intel Celeron
Memory Support: DDR SDRAM
Graphics: Integrated Mirage™ 1 Graphics
Audio: Integrated AC'97 Audio
Expansion Slots: PCI, AGP
Southbridge: SiS 962L
Integrated LAN: Yes, Fast Ethernet
Integrated IDE Controller: Yes, supporting ATA-133
USB Support: USB 2.0
Form Factor: Micro-ATX

Key Features

1. Processor Support: The SiSM661MX chipset supports Intel Pentium 4 and Intel Celeron processors, making it suitable for mainstream desktop computers.
2. Memory Support: It supports DDR SDRAM memory modules, which were common during its time and offered a balance of performance and affordability.
3. Graphics: The chipset includes the Mirage™ 1 Graphics engine, providing integrated graphics capabilities suitable for basic graphical tasks and multimedia playback.
4. Audio: Integrated AC'97 audio provides basic audio functionality, supporting standard audio interfaces for speakers and microphones.
5. Expansion Slots: It features PCI slots for expansion cards and an AGP slot for dedicated graphics cards, allowing users to customize their systems with additional peripherals and graphics capabilities.
6. Southbridge Support: The SiS 962L Southbridge chip complements the SiSM661MX, providing additional features such as IDE controller support for ATA-133 devices, USB 2.0 connectivity, and integrated LAN for networking.
7. Form Factor: Designed primarily for Micro-ATX form factor motherboards, the chipset supports smaller desktop configurations while still offering a range of connectivity options and performance features.

Legacy and Market Position

The SiS SiSM661MX chipset was popular in the early 2000s, particularly in budget-friendly desktop computers and small form factor systems. Its integrated graphics and audio capabilities, combined with support for Intel processors and DDR memory, made it a cost-effective solution for mainstream computing needs at the time.

Overall, the SiS SiSM661MX chipset represents a snapshot of the technology available in the early 2000s, offering a balance of features suitable for home and office desktop PCs where affordability and basic multimedia capabilities were prioritized.