Here is the weird thing about the P67A-UD4: all its memory sockets are black. If you have two memory modules, you will have to install the first module in the first memory socket and the second module in the third socket in order to enable dual-channel architecture. Since all sockets are black, users may think that they can install memory modules in any two sockets, which is not the case. This is a serious mistake coming from a tier 1 manufacturer. Hardwaresecrets

Price for P67A-UD4 170-180€ in EU...