3gb Memory Question

[Helix86]

I'm currently running 1GB Geil memory in my desktop (2 x 512mb). Is it ok to slot in 2 more 1GB sticks in the two free slots? to make a total of 3GB memory?

Cheers

 

[Helix86]

a related question:

will the 2x512MB + 2x1GB = 3GB configuration work in dual channel?

That was what i was really after i suppose. I'd obviously match up the slots with the sticks?