Fastest onboard raid controller?

[cavemanoc]

I'll be building my new rig over the next couple of months and have decided to move away from a Pci-e add-in raid card (scsi I'll miss you -sniff-)

Will be looking to raid probably 4x320Gb F1s and was wondering what the fastest onboard solution is at the moment - will I get away with something like the new p35 DFI or is there better stuff available?

 

[cavemanoc]

Is the ICH9R considerably faster than the offerings from nvidia/Ati?

 

[cavemanoc]

Sorry - should have said - I'm only interested in Raid 0, and purely from a speed point of view. I run raid 5 on my scsi's atm (perc 4e/dc) but as you said, without a dedicated card it is pointless.