Sakkura :
I wouldn't recommend buying less than 4 GB, and you might as well get 8 GB with the current RAM prices.
Agreed.
4 GB would do pretty much everything you need even gaming unless your are looking to max out the very latest titles and even then 8 GB really isn't needed.
However as said with prices as they are it really makes no sense to go with anything else than 8 GB.
Put it this way, if I had 4 GB of Ram already I wouldn't be buying another 4 to go with it.
If I was building a new PC from scratch I would get an 8 GB matched set for it.
Mactronix