I have an Intel DP35DP motherboard (and Q6600 CPU) that requires 1.8V RAM. It is capable of using 1066 memory but all the 1066 memory I find is 2.2 Volt. There is nothing that I can find in the BIOS about changing voltage as suggested by other sites.
The BIOS states "System Bus Speed 1066Mhz" and "System Memory Speed 800Mhz" (I have 800 Mhz memory installed).
Although I probably wouldn't really see a difference between 800 and 1066 speed, I'm curious if the 2.2 volt memory would work (and work properly)?