The odds are (since I don't know you motherboard's specifics) you can probably disable the Marvell controller in the BIOS, whereas you won't be able to disable the Intel one.

Since using the 6Gbps ports probably won't help any with 3Gbps drives, I'd say use the Intel controller and disable the Marvell one, as you'll probably gain more by having the resources it would use remain available for other subsystems.

I'd be surprised if you could take an array built on one of these controllers and move it to the other and maintain the array, since they are different manufacturers; but you never know as Intel uses Marvell on their boards as a secondary sometimes as well.

The odds are (since I don't know your motherboard's specifics) you can probably disable the Marvell controller in the BIOS, whereas you won't be able to disable the Intel one.

Since using the 6Gbps ports probably won't help any with 3Gbps drives, I'd say use the Intel controller and disable the Marvell one, as you'll probably gain more by having the resources it would use remain available for other subsystems.

I'd be surprised if you could take an array built on one of these controllers and move it to the other and maintain the array, since they are different manufacturers; but you never know as Intel uses Marvell on their boards as a secondary sometimes as well.