Get 1x2GB. It's cheap(er), and opens up more slots for expansion in the future.
1x2GB RAM is better as it occupies only 1slot. 2x1GB gives same performance but occupies 2slots.
Get 1x2GB. It's cheap(er), and opens up more slots for expansion in the future.
I have a 1024MBx2 RAM memory because I believe that if anyone has some defect then you need to only replace only one memory stick.
I would say 1X2 GB ram is enough.