Another silly Dual Channel Question

[Viper16]

I have the ram listed in my sig and later I want to upgrade, and intead of wasting the last two slots, is it at all possible to run my 2x512mb Ram and say get a pair of 2x1gb sticks and still run dual channel? I just hate to waste the ram I just recently bought within the last few months. And it will be in 2t timing right? So in other word instead of getting just 2 gig, I could have the potential to have three gig...or is three gig just rediculous and un even, lol. Thanx in advance.

Also can my mobo even handle those types of configs of ram?

 

[(cf)Eclipse]

it should work, but yes, you'll have to use 2T and maybe drop the ram speed down to 166mhz, though the latter is less likely