How much can I lower the Vcore Voltage ?

CROcodile20

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Nov 14, 2014
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I have an i5 4690k OCd to 4,2 GHz, its stable and the Vcore voltage is set to 1,115.
Im wondering how much am I allowed to lower this voltage ? Is it bad if I put it too low, or should I go ahead and and find the lowest stable voltage ?