what memory upgrade?

I know my mobo takes Pc2700 memory in dual channel mode. there are 3 slots for memory.
I'm interested in upgrading my 2x512 modules to at least 2x1gb.

if i bought 1x1gb and added it to my current 2x512 would that give me 2gb with the 2x512 working in dual channel mode?
if i bought 2x1gb modules would it HAVE to be pc2700?? If i bought pc3200 would it simply run a bit slower but work fine or would it cause problems on my board?

many thanks
David

 

David, there should be 4 slots if memory has to work in dual channel mode.

Yes & No. Your 512 MB would be running in dual channel, but 1 GB would be running in single channel mode. Check your mobo docs to see if this is supported or not.

You can buy PC3200 RAM. It would be downgraded to PC2700 & would run at slower speed.

 

A lot of dual channel boards have 3 memory slots but only two of the three can be used for dual channel.



edit for clarification: If you have 3 slots and again, many dual channel boards have 3 slots, you can run 3 sticks of memory but you will lose dual channel functionality. If anyone can figure out how to run 4 sticks with three slots, they're on their way to an exciting new career.

 

Thanks guys.
The board has 3 slots.
It looks like I'd be better buying 2 x 1gb modules and running them in dual channel mode rather than add 1 gb and run the whole lot in single channel mode.

thanks again