Athlon 64 Motherboard

[beamer113]

If the chipset for the motherboard is a KT800 would I need to buy memory in pairs? What I'd like to do is install 512 MB of memory, and I've been hearing different stories regarding this type of chipset. Some of the articles I've seen was that if PC3200 sticks were loaded, with this type of chipset, you won't be able to use a PC-3200 to its max potential (400 mhz). I'd like to find out if I can just buy one 512 MB PC3200 memory stick or should I go with two 256 MB PC3200 sticks. What can you advice. Thank you.