Would like to ask some questions of memory

My computer is 512MB of memory, CPU-Z test module SPD in a show that DDR2, PC2-5300
(333 MHz), 512 MBytes, Samsung
memory decline that was too big, I would like to upgrade
About who is behind the memory of these always have to add 883,880 ah
What does that mean my memory is that? “Upgrade is not the time to buy the corresponding ah

you to buy directly ddr2 memory can be loaded back up! Your memory is a standard 667-generation DDR2 memory, the best time to buy with this root with the same standard
5300 / 8 = 667, not the same name.
667 refers to the frequency, if you buy The DDR2 800 memory, motherboard does not support, we can only work in memory of the 667 frequency.You have a 667 or 800 a piece, can only work in the low-frequency.This is your main version of the related! Do not know if your computer to see if people take the best! Test of the new machine can be bought and 883 of the 880 bought the old test that is not jack is not on the 776 can only buy what's what The!