intel ich7

hi, i know should be a kind of sata-raid support for ich7 controller in kernel after 2.6.10 (and suse 10 is 2.6.13). But i didn't understand if using native bios intel fakeraid instead of linux software raid brigs to better performances or not. I'm going to raid-5 three 250gb sata-hd. Thanks in advance. L.Cerini