Is more then geforce 460/560 required even for 1x Internal Resolution.

[AnyOldName3]

With decent cooling and sensible VCore, then although it will reduce the CPU's life, it will still last long enough to be completely obsolete by the time it breaks. It should have 5-10 years life vs 10-15 years. Within 5-10 years, there's no way you'll still be using that CPU, as there'll be much better ones available.