P8P67 ram not running in dual channel

[busmaster11]

Running standard P8P67 non-pro and oc'd 2500k and win7 64 bit and Gskill 1600 2x2gb 1.5v. Latest BIOS.

Ram in 1st and third slots (light blue) POST and cpu-Z don't show dual channel. any ideas?

 

[StinkyPinky]

I think cpu-z is not reliable at the moment. When I look at mine almost all the fields are grayed out

 

[d4a2n0k]

I have the P8P67 Pro and my manual says when using two dimms you should put them in slot A2 and B2 ie. slot 2 and 4. Not sure if that will make much difference.....