[Solved] Memory compatibility in dual channel

Hello. I have a MSI P6N SLI Platinum mobo with 2x 1GB Corsair CM2X0124 PC 5400 RAM, running in dual channel.

I have recently felt the need to get some more memory, but since I won't be upgrading my mobo for a while, I was wondering what would be best to do.

My question is, can I put another 2GB of memory (2x1GB) on the other channel but of a different spec? That same memory above is becoming a little hard to find around here being old and all. So I was wondering - if I put in some corsair pc6400 memory running at native 800mhz on those 2 slots, would it work? Or would there be memory incompatibility and they'd be gimped running at 667 like the other 2?

Also, I was taking a look at the mobo's specs again and checked that the FSB is 1333/1066MHz (see http://www.newegg.com/Product/Prod [...] 13130081). Does that mean I could get some better memory and run them at 1066 MHz?

Thanks!

Thanks for the reply mate.
As for the FSB question, I researched a little bit more and saw that my processor (E6750) enables the config of 1333MHz FSB on the mobo. Does this mean I can run DDR2 1066 ?

Good to know that, I~ll be sticking to pc6400 for a while.

I'll stick to 2 gig of pc6400 for now, even though it'll be gimped by my PC5400. I'll substitute the other 2 gig at a later date.

Thanks a bunch!

That's a good idea...change all RAM...IMO you will get the Crucial Ballistix Tracer PC2-6400..