If crashes become more and more frequent and you have to lower clocks more and more, it is probably failing and eventually it will stop working.
Here is an interesting article AMD's forthcoming GPUs
. I would suggest to visit www.vr-zone.com
as well they get news quickly.
I used to be a die-hard ATI user for years. I finally decided to try Nvidia almost 2 months ago and do not regret it. Games that support PhysX feel a lot more engaging. I might go back if AMD comes with a decent physics technology which will be popular amongst developers.
Core i7 960 3.2GHz | 12GB RAM | 1.5TB HD | Asus GTX Titan | Dell WFP 3008 30" 2560x1600 | Windows 7 Ultimate 64 Bit