I have an HP m385c from Sam's Club. Came with 2.8 GHz hyper-threading CPU and 512 MB of memory. I think this is 2700 memory, not sure, but I understood that it was foolish to have memory this speed (too slow) ina machine such as this, so i was thinking of buying a couple sticks of faster memory and replacing these, either 2x256 or 2x512 if i can afford it. But I need to know what memory to buy. I believe there's a 3200 memory that would be appropriate? A little help here?