I got two Seagate 7200.11 500Gigs and consider buying this RocketRAID 2302 controller. Currently running them in raid 0 through the onboard ATI sata300 raid controller. Can I expect any real life performance boost buying a dedicated controller like this? The Highpoint controller and my disks support NCQ but I'm not sure my onboard controller does, havn't found much info about it. Any views?