Also, is it better to have two 512mb cards or one 1gb card?
If you have a computer that takes DDR2 SDRAM, what types of memory can you buy? If it has 533mhz now, do I have to buy more 533? Or can I combine it with 667mhz or 800mhz or 900mhz? Or do I have to get rid of the 533, and buy that specific speed. Do I have to buy pc4200? Is there some sort of report that someone has written that I can look at?

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