What voltage does Radeon 9600 Pro use?

[Traveler]

I didn't realize this problem until now:
My old machine (ASUS P4SDX) uses a Radeon 9600 Pro. And it's suppose to fit for 4x or 8x.
As for 4x, it uses 1.5V.

But I recently bought a new board (SOYO SY-P4I865PE Plus Dragon2 V1.0), and it supports 1.5V only on AGP.
Problem is it does not response to my Radeon 9600 Pro.
Moreover, the card's insertion's portion looks like 3.3V slot rather than 1.5V slot.
So now I don't know if it's because it looks like 3.3V slot or it's really running on 3.3V.

But my P4SDX's AGP is for 1.5V only also. And my video card runs fine on it.

How can this happen??!

By the way, my very old All-in-Wonder 128 Pro runs fine on the new board.

 

[Traveler]

New development:

For the sake of believing that my Radeon 9600 Pro is indeed running on 1.5V:
I measured the insertions of my All-in-Wonder 128 Pro and Radeon 9600 Pro and found where 1.5V card and 3.3V card supposes to be different.
Then I placed a small scotch tape on that place and hoped to bypass the board's AGP card detection.

And... it works, monitor is green and displaying!