This sounds like a strange question. I got the computer in a trade with someone else. Crucial's program says I can use 200-pin SODIMM, DDR2 PC2-6400 When I go into system profiler it says I have this Size: 1 GB Type: DDR2 SDRAM Speed: 800 MHz Why is it showing 800mhz only? Is that even possible? My second question is this. I have 2 sticks of RAM from my old macbook that are 512MB each that are PC2 5300. Would it be faster if I put 1 or both of those in instead of the DDR2 800mhz RAM?