I'm waiting for a hook up from Spec and once I get it I'm thinking about getting more memory. I have this right now and I want to add these to my other two DIMMS. I assume this should be fine? This is my mobo in case you need to know.
I think this is hilarious. Look at my sig, Szat. I have the SAME MB and the SAME RAM setup you are thinking of running. Go for it. I love my 6GB! The timings and voltages will all stay the same--I have them manually set in my BIOS.
The only difference form his old memory and the new is the capacity. All other aspects are exactly the same. I see no problems at all with running them together.