Acquired Electronics360

Information Technology

Winsonic WS661GX SiS 661GX Chipset Barebones Motherboard Teardown

16 February 2007
The following is an overview of a teardown analysis conducted by IHS Technology Teardown Services.

Main Features / Overview

Winsonic WS661GX-LV5.0 Micro ATX Motherboard

Barebones motherboard - no CPU - from "Winsonic based on SiS's 946L/661GX (661GX-L) chipset with empty 775-pin CPU socket (Intel Pentium 4, Pentium D, Celeron D).

Target Market

PC OEMS, kitters, consumers, retail outlets.

Winsonic WS661GX SiS 661GX Chipset Barebones Motherboard Main ImageWinsonic WS661GX SiS 661GX Chipset Barebones Motherboard Main Image



Pricing / Availability

Similar products retail for about $50 and up online.

Winsonic WS661GX SiS 661GX Chipset Barebones Motherboard - Motherboard - Functional AreasWinsonic WS661GX SiS 661GX Chipset Barebones Motherboard - Motherboard - Functional Areas

Volume Estimations

For the purposes of this cost analysis we have assumed a total production volume over product lifetime of 200,000 units of this particular model.

Function / Performance

Functional testing was not performed on this device.

Winsonic WS661GX SiS 661GX Chipset Barebones Motherboard Cost AnalysisWinsonic WS661GX SiS 661GX Chipset Barebones Motherboard Cost Analysis

Cost Notes

Pricing assumptions were generally very aggressive for this board - it was assumed that ""Winsonic" or the real Odm building this board is purchasing at worldwide lows as we understand them.

What Is Not Included in our Cost Analysis

The total materials and manufacturing costs reported in this analysis reflect ONLY the direct materials cost (from component vendors and assorted EMS providers), AND manufacturing and test. Not included in this analysis are costs above and beyond the material manufacture of the core device itself - cost of intellectual property, royalties and licensing fees (those not already included into the per component price), software, software loading and test, shipping, logistics marketing and other channel costs including not only EMS provider and the OEM's margin, but that of other resellers. Our cost analysis is meant to focus on those costs incurred in the manufacture of the core device and exceptionally in some circumstances the packaging and literature as well.

Manufacturing NotesCountry of Origin / EMS Provider

China was the country of origin assumed for PCBA manufacturing. EMS/ODM unknown.

Design for Manufacturing / Device Complexity

This motherboard is fairly well integrated and features an overall component count that is greatly reduced when compared with other 775-pin socket based motherboards analyzed over the course of the last year (form factors were different, and North/Southbridge chipsets were also different). At a total component count of 871, this Winsonic board is less than all other motherboards looked at thus far - the nearest being the Micro-Star MS-7184 Micro-ATX Motherboard, which was also a Micro-ATX board - and had a component count of 1090 (previously the lowest component count seen). That Microstar was based on an ATI North/Southbridge Chipset RS482/SB400.

Component counts have a direct bearing on the overall manufacturing cycle times and costs, and also can increase or decrease overall yields and re-work. Our calculations of manufacturing costs factor counts and more qualitative complexities in the design.

Design Notes

Major components:


- Clock Generator - ICS - ICS952018AFLF - Timing Control Hub, Programmable, for P4 Processor


- No CPU Included

I/O & interface

- I/O Controller - iTE - IT8705F - LPC Interface & Hardware Monitoring

- Ethernet Transceiver - Realtek - RTL8201CL - PHY, Single Port, 10/100M, 0.18um

- Audio Codec - Realtek - ALC655 - AC'97 2.3, 6-Channel


- Flash - Winbond - W39V040AP - 4Mb, w/ LPC Interface, CMOS, 3.3V


- Northbridge - Silcon Integrated Systems - SiS661GX - Graphics and Memory Controller

Power Supply

- Richtek - RT9245 - PWM Controller - Multi-Phase for CPU Core


- Southbridge - Silcon Integrated Systems - SiS964L - I/O Controller


Powered by CR4, the Engineering Community

Discussion – 0 comments

By posting a comment you confirm that you have read and accept our Posting Rules and Terms of Use.
Engineering Newsletter Signup
Get the Engineering360
Stay up to date on:
Features the top stories, latest news, charts, insights and more on the end-to-end electronics value chain.
Weekly Newsletter
Get news, research, and analysis
on the Electronics industry in your
inbox every week - for FREE
Sign up for our FREE eNewsletter


Date Event Location
04-07 Jun 2018 Boston, MA
06-08 Jun 2018 Los Angeles, CA
18-22 Jun 2018 Honolulu, Hawaii
12-16 Aug 2018 Vancouver, Canada
11-13 Sep 2018 Novi, Michigan
Find Free Electronics Datasheets