will they work together?

[Corpio]

Hello everyone,
I need your help to tell me if my new RAM will work together with what I currently have.

Now I have an Adata 2 x 2GB model number ad3u1333b2g9-b. http://www.memory4less.com/m4l_itemdetail.aspx?itemid=1445712333

and I am planning to add another Adata 1 x 4GB AD3U1333C4G9-R. http://www.heise.de/preisvergleich/adata-value-dimm-4gb-ad3u1333c4g9-r-a599566.html

Will they be compatible and work together?
thanks a lot for your help.

 

[Tradesman1]

Maybe, it's a crapshoot, they might play, they might not. Even with identical sets of DRAM there are no guarantees they will play nice.