Can you run both 1066 mhz and 800 mhz at the same time in the same computer

[Guest]

I have a Dell Dimension 8250 and would like to know if you can run both 1060mhz and 800mhz memory in the computer at the same time

 

[Guest]

in a way, yes. the ram should work, but the 1066 MHz ram will degrade itself to run at 800 MHz. So yes it will work, but no it wont run at 1066 MHz unless you oc it