RAM Questions...

[Razer]

S! Ya'll....

I'm in the middle of a yearly upgrade of my beast, and have couple of simple, if stupid, questions regarding RAM....

My current setup is based on a Gigabyte GA-M55SLI-S4 motherboard, equipped, at the moment, with 2x 512mb DDRII 667 ram (I believe its the 5-5-5-15 type)...

Now my question is this; to upgrade the RAM, what should I do...?

Its difficult to find the same type of RAM, being 5-5-5-15 (or what ever it is) and its seemingly cheaper (almost) to simply buy 1gb sticks...

Do I buy two 1gb sticks, and run 3gb of RAM? Would this work? Does it even need to be 667?

And on that note; how about mearly buying a 1gb stick, and running that with the 512's (like above)...?

Obviously I'm not too concerned about running it 'dual-channel' or anything, mearly wanting to know what I can do to increase my RAM count....