Q. I have a Slot 1 board and have heard about using an inexpensive Upgradeware adapter to make the newer Tualatin CPU's work, any recommendations?
A. It depends on whether your motherboard uses the original VRM 8.2 voltage regulator or the later VRM 8.4 version. The Upgradeware adapter's voltage adjustments do nothing more than manipulate the voltage detection pins of the Slot1 package. So you can have your CPU detected at voltages from 1.30v to 2.05v. And the MOTHERBOARD'S Voltage Regulator will set the voltage to whatever it detects, UNLESS it's out of range. That means, if your board has the earlier VRM 8.2 voltage regulator, which has operational voltages from 1.8 upwards, you would have to set the Upgradeware adapter to AT LEAST 1.8v just to get it to boot! 1.8v is fine to get Coppermine CPU's to work on VRM 8.2 boards, because the Coppermine is .18 micron and can handle it. The Tualatin however is .13 micron, and voltages above 1.70v are likely to damage it!
VRM 8.4. was released in anticipation of the Coppermine core CPU and allows voltages down to 1.5v or less. So basically, if your board was designed or revised for use with Coppermine CPU's, it will work with the Tualatin on the Upgradeware adapter at reasonable voltages (1.50v recommended). Otherwise, you'll need a Powerleap adapter, as these have their own ONBOARD VRM, which allows the board to detect the adapter itself at a higher voltage while the CPU operates on a separate voltage input from the Powerleap VRM.