The concept that RAID 1 isn't fast is incorrect. I'm not sure where people got that from. Obviously, f you care about write speed, then RAID 1 is not for you. But RAID 1 is much faster than a single disk at reads. I believe most PC users (gamers included) don't do much writing. RAID 0 isn't an option under any circumstances, in my opinion. Backups shouldn't be an only resort.
There's a big difference between a $50 (or onboard) RAID card and a $300 RAID card, as far as performance is concerned.
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