Originally Posted by Rollo
Apparently the 6990 has some issues surviving the overvolting switch ATi put on the card, but will void your warranty for using.
That's why you buy XFX which gives you a lifetime warranty AND lets you flip the switch under warranty. Also, nothing can protect a video card from gross negligence. However, AMD has not bricked any video cards based on faulty drivers.
I've said it before, and I'll say it again. I would not purchase the GTX 590 because overall, it's slower and there's a chance that it will die from faulty drivers. Also, I won't purchase the HD 6990 either due to the noise pollution it produces. So in my opinion, neither card wins.