Sapphire 7870 OCing?

ndslite

Honorable
Dec 20, 2012
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10,690
So I got my 7870. It has a Deafault voltage of 1.25!!! Pretty high, but Sapphire said its fine. So, without raising the voltage, I OCed it to 1150 on the core and 5250 on the Memory. Will this shorten the lifespan of my GPU significantly?