Question : Will this ram compatible with my existing ram?

Hi,
I want to get some more ram on my mobo and please have a look at 2 attached images.
my mobo model is P5b Deluxe wi-fi ap

The first image is my Current ram info and the second image is the new ram I want to add.

Attachments:

current-ram.png (39 KB)  (File Type Details) 

Current Ram

new-ram.png (21 KB)  (File Type Details) 

New Ram

Answer : Will this ram compatible with my existing ram?

Because dual channel works best if the same type of RAM is in the same color slot.  Crucial can be in either yellow or black, but whichever you choose has to have both sticks in the same color.  Typically, one does not have to care about this because one would buy four sticks of RAM that are all identical.