Welcome to the winThrottle homepage.



winThrottle was written by Jeff Leyda and Ryan Geiss

Latest windows Vista/XP/NT/2K (does NOT work under win98/95/ME!) version: build 007,Dec 12th 2006
Source code (Visual Studio .NET C++): build 007

Good news: This latest version no longer uses giveio.sys as a means to access the system hardware!
Bad news: For the life of me, I cannot make a nice installer to get the driver loaded, so you need to install it by hand. Details are included in the archive.

Click here for the DOS/win9x/winME Throttle page

winThrottle is free and open source software. It contains no spyware or malware.

Why is your computer running at 100% capacity when you're not using it?
Use throttle to cool your computer, prolong the life of your CPU, and save a little electricity too.
Throttle is a perfect background utility for machines running 24 hours a day.
Have a program that runs too fast? (perhaps an old game?)
Use winThrottle to slow your machine down so it will run at the proper rate.

What it does:
Throttle uses a feature in your system's hardware to modify the clock speed going to your CPU, rather than using software "delay loops" or HLT instructions to slow your machine down. This method provides very smooth slowdowns without any incompatibilities with software.

Features:
- "on the fly" adjustability for the amount of slowdown.
- CPU load based auto-throttling. Slows down your CPU when not in use, speeds up as demand increases.
- simple to use interface.
- hides in the system tray when minimized.
- small memory and CPU usage footprint, machine can also be throttled with NO memory or CPU usage.
- command line support for complete background usage.
- completely compatible with other system slowdown utilities.
- free and open source.


Caveats:
- Newer CPUs with SpeedStep technology may actually INCREASE the amount of power consumed when the system is throttled. The machine will still slow down, but don't use winThrottle if you're looking to save energy.

winThrottle has also been ported to Delphi by Bill Jameson.
His version monitors the CPU temperature on certain motherboards and will throttle accordingly.
Download the Delphi version with source code.

For support on using these programs, contact jeff@silent d0t net