I have given up on Intel's "support" information, and I don't know where else to go, I hope someone can help me here. I have an older Intel board, D815EFV, and I want to know if it supports the Tualatin core (.13) Pentium III's in the 370 pin FCPGA configuration. I don't have any CPU's around to test it out, and I was going to buy one but it would be nice to know first.

Even if it doesn't, you can buy an adapter from Powerleap

Based on this, it depends on the revision of your board. Use the information at the bottom of that page to find out.

Any motherboard that says it can support 1.13 or 1.2 processors at Intel.com means the board supports Tualatin CPUs. There were no other versions of 1.13 or 1.2 P3 chips.

Thanks for the replies!
Drakino, my board number is below the A51500-700 number. Does this mean it won't support the 1.13 or 1.2 no matter what? Unless I buy that adapter?

Tualatin processors have different voltage needs than the older FC-PGA chips. You'd probably end up blowing the chip or motherboard if you plugged it straight in. The newer board probably detects if it's a Tualatin and then changes the voltage on the IO or whatever pins that were changed.

You have to get the adapter basically

Does this mean it won't support the 1.13 or 1.2 no matter what? Unless I buy that adapter?

You must buy the adaptor. The Tualatin uses a different input voltage then the older P3 chips did. It's unfortunate that very few consumer motherboards come with removable voltage regulator modules, the component that feeds your CPU power. In many cases, these fail before other components, and making them removable would allow for either easially fixable motherboards, or upgradable motherboards as well.