im pretty sure they dont but i dont think just ocing hurts a card, i can set my 650mhz ram modules rated at 700mhz to 1.2ghz even though it freaks out and crashs a restart fixes it, same with core i set it from 300mhz to 500mhz and it comes out fine
I like how manufacturer's say that overclocking or modifying in any way voids the waranty, but offer there own overclocking utilities to thier customers.
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