Originally Posted by briank
RAID-0 will give you a 0-5% increase in performance in most applications and games. And it will decrease your reliability by 50% as well as cost you twice as much.
Some things you should know:
RAID-0 only increases the sequential performance of a hard drive. So it looks nice in the benchies but not so useful for anything but video editing. You're not doubling your performance with RAID-0, just the sequential transfer rate.
Hard drive performance is decided by a number of things: sequential transfer rate, average seek time, track-to-track seek time, cache size and how the format and cache are designed (server or desktop use).
The reason many people think RAID-0 feels faster compared to their old single drive setup are the following:
They replaced an old drive with 2 faster new drives. Just a single one of these more modern drives would be much faster.
The next reason is that they did a fresh install of windows. Windows always hauls arse when you just install it, but as you install software it slows down...