I think you mean version:
1.1.2 from
TechSpot Downloads section
I've also been able to find version
1.1.4 from here:
http://support.amd.com/us/Search/results.aspx?k=AMD Dual-Core Optimizer
From the ReadMe Document:
---System Requirements---
* Microprocessor: AMD Athlon™ 64 X2 Dual-Core Processors
This software installs and operates under the following operating systems
* Microsoft® Windows® XP
* Microsoft Windows XP Professional x64 Edition
* Microsoft Windows Server 2003 32-bit
* Microsoft Windows Server 2003 64-bit
* Microsoft Windows Vista Beta 2
Operating systems NOT supported are:
* Microsoft® Windows® NT 4.0
* Microsoft Windows 98 Gold
* Microsoft Windows 98
* Microsoft Windows 95 OSR2
* Microsoft Windows 3.x
* Microsoft Windows Millennium
* Microsoft Windows 98 Second Edition
*
Microsoft® Windows® 2000