One of my RAM sticks is from what I believe to be produced by "ASint", and is a 2GB stick. I think the part number would be 1333. The other RAM stick I have is produced by "Patriot", and is a 8GB stick. I do not know the part number for this stick. I don't see it listed on it. Both sticks I believe are DDR3 (or DDRIII), and from left to right, the Patriot ram stick is first, and the other is last.
As for the Task manager Neem, I saw your post on one of the previous threads similar to this. Before hand, I did not see the option for "Hardware reserved", but now I do. For me, It says that 8.6GB is reserved.