Great score Dagmar, I had the same problem with the Crosshair V Formula Z not detecting the second module

 

With a Sempron I had to lower the fsb to 334 for dual channel to work with two sticks, you can see it in the boot screen, anything over that it was back to 2048

1325MHz tRCD 9 is very strong for PSC of this bin.

Is there any way of sorting this out, I get single channel even at 251 FSB Dewi. That is not high at all.

What does it say when you boot up? If it says 2048MB, you're running single channel (even if it's 4096MB in OS)

The best way round it is to try a lower fsb to boot and work yourself up in windows

Boot up is 4GB currently, and dual channel in OS too, but I am not clocked very high at the minute busy trying to play with the HT and NB.

Very nice, have you tried lowering nb freq?

Very nice, have you tried lowering nb freq?

 

Think you have got it.

Look at there :

http://imageshack.us/f/254/59515147.png/

 

If windows said 4gb (only 2gb available) un stick doesn't works. Probably too wet or just need to be cleaned