Hello, I was recently given some New in Box,Western Digital Caviar Blue HDD'S. I will be re-installing my win 7 after Some Deep PC cleaning. I have some question's in regard's to AHCI/IDE storage setting's. First off, which if either is better? I DO know that AHCI is a newer technology, but I am unaware of it's benefit's. Is it different from IDE installation? I would assume it's the Same, but I am Mostly NEVER right. Lastly, What EXACTLY is raid? I feel like an ass , having to ask this, but I'd like to know. I DO know what it is in a physical sense, but I Don't know what it is on a Software level , or what it's benefit's are. Any and ALL help would be greatly appreciated. If not, then Thanks for looking.