The 875 review said that ICH5 peformance suffers from lack of drivers, but according to one other review(I read about 10 and don't recall which one) there will be no more ATA drivers for the ICH5 unless you're using RAID. This seems to be confirmed by Intel here. This would really suck, I like the boost the IAA gives in things like database compacting but the newest non RAID version (2.3, 5 months old)has some problems and there's no mention of whether it would work on the ICH5 anyway.