MSI k8n Neo2 Memory Problem?

[KillerX]

Hey guys

Just got myself a new MSI Nforce3 Mobo with 2x 512 MB Corsair Xtreme Memory Speed

Ok, so the mobo does support dual channel memory, and should pick it up automatically if u insert the 2 RAM sticks in channel A (Green Slots On Mobo). I have flashed the mobo with the latest bios (1.3) but it still says running at DDR400 Single Channel when i boot. Why is this? Is it a BIOS setting??? Need some advice here

Thanks

 

[Chronoshock]

You want to run them in one of each color (one green, one purple) so slots 1&2 or 3&4. You are currently putting them in one channel