Look how small the TD2 is!	This camera takes horrible close-ups :(

The Tweeking Device2 (TD2) is by far the best GFD I have ever seen, it is also the smallest! It’s exact measurements are 1.25" x 1.37"!! That’s smaller then a standard AA battery! This means you shouldn’t have to worry about whether it will fit in your case. It also means it won’t restrict airflow at all.

I have yet to find a more simple way to gain speed in a Slot-A Athlon. The TD2 has only 8 dipswitches to control both voltage and multiplier, making adjustments the multiplier and voltage very easy. The switches themselves are easy to manipulate, having a very positive feel. Even for someone with big hands, adjusting shouldn’t be a problem.

Another feature that should be pointed out is the fact that the TD2 has NO POWER CONNECTOR. It uses the power from the GFD connector itself, which means no more Molex connectors cluttering up your case. It also makes it much easier to take it on and off to adjust the settings. Adjustment of the CPU frequency is from 300 to 1050Mhz in 50Mhz steps. Adjustment of the core voltage is from 1.3V to 2.05V in 0.5V steps.

At the bottom left you can see the TD2 installed

Installation
Installation is quite simple with the TD2, just the same as with any other GFD. The first thing your going to have to do is remove the plastic casing from your processor. If you don’t already know how to do that, then check out the article that The Tech Zone did on it here. After removing the case all you have to do is plug the TD2 into the Gold Finger connector on the top corner of the processor. Make sure you configure the settings you want before plugging it in, since it’s a lot easier then trying to do it with it plugged in. After you have the settings configured to your default speed and voltage, plug it in and boot up your computer. If it boots up okay then power down and up the speed by 50Mhz, then boot up again. I’d recommend playing a few games of Unreal Tournament or running 3dMark a few times to test stability before going up any farther. Keep on raising the speed until it won’t boot, then power down and try raising the voltage by .05. Keep raising the voltage until it becomes stable again, then start raising the speed again. Keep on repeating these steps until you get as high as you can go. Warning: Raising the voltage to anything above 1.9v can fry you chip permanently unless you have A LOT of cooling. I’d recommend keeping the voltage to 1.85v or lower.

Performance
In the documentation included with the TD2 it says you should be able to successfully overclock by about 40%. I have been able to sucessfully get my Classic Athlon 550 all the way up to 750Mhz so far, which is a gain of 200Mhz. I’m not finished yet either, once I get a bigger heatsink I plan on trying for 800Mhz or maybe even 850Mhz. How high you can get yours really all depends on two things, what kind of cooling your system has and what the original core speed of your processor was.

Conclusion
I have yet to find another GFD I can recommend more then the TD2. There really is nothing wrong with this product, and at a price of $45 this is a product owners of Slot-A Athlons can’t afford NOT to buy! So head over to HighSpeed PC and buy one RIGHT NOW!