While I have your ear, which SATA port will the Crucial C300 do his best work? I have an ASUS P8P67 Deluxe MB, and it has a couple of Intel 6gb ports as well as 4 3gb ports, as well as 2 Marvell 6GB ports.
Unless I'm told otherwise my plan is to plug the C300 into the Intel 6GB and plug my Samsung spinpoint and DVD burner into the Intel 3gb ports.
There was a technical review that actually tested a Crucial C300 ssd connected to both Marvel and Intel SATA ports on several motherboards. The review indicated the Intel ports performed a little better than the Marvel ports. Actually it wasn't the port itself but rather the onboard Intel chipset that handled the ssd a little better.
i have p8p67 deluxe and confirm that intel is the way to go. I had issue with my C300 with the marvell initially. I thought that since the C300 uses marvell controller, it would be a good ideal to plug into the marvell sata3 port ... wrong ...