Advice regarding mixing memory

I recently bought a Dell Inspiron 640m laptop and talked the sales people into upgrading the memory from 512mb to 1gb. Surprise, surprise, when it arrived, it only had 512mb as 2 sticks of 256mb.

I complained and they promised to send me 1gb which arrived today as 1 stick of 1gb. So, I have a choice and this is where I need your suggestions...

As it is now, I have 1 stick of 1gb and 1 stick of 256mb installed, a total of 1280mb.

I can leave it like that or complain and get 2 sticks of 512mb for proper dual-channel 1gb.

My knowledge in this area is thin at best - am I better keeping 1280mb made up of mixed modules or changing to 1gb of matched modules?

Thanks a lot.

 

I would stay with the 1 gb then you can purchase a 1 gb yourself to dual channel with 2 gb

 

Keep the 1 GB as compsavy said. In the meantime there is no problem with running 1.25 GB of mixed memory. Just get another 1 GB stick off newegg and you're set. Dual channel doesn't make as much of a difference as people hype it up to be--it's about 5%.

 

Thanks for the replies - I'll stick with what I've got.