I would like to add another 512 memory stick to my computer and I understand I should by the same type but I would like to buy a better quality stick. If I buy something a little better then my current type how would I know if my computer can fully use the memory stick? Is it even worth buy a more expenisve stick at all? Or does it actually improve my computer in any way? Though I doubt my computer wouldn't be able to handle a high end stick since my mother board sort of sucks. Right now I'm running a single 512 PC 2700 DDR 333MHZ. Thanks.