Man i remember a while ago talken to a friend and he said someone had a quad raid-0 setup with 15,000rpm drives (cost like $1000)... now that prices are super cheap, the idea popped back into my head. How much real world performance would a quad stripe 15krpm have over say 2 raptors in a stripe or a single raptor in a stripe? Real world not just 'should be' or theoretical stuff...