The days when you could overclock your Intel “K” or “KF” chip with impunity, while liquid nitrogen vapor wafted through the long tresses of your hair, are over. On Monday, Intel abruptly ended its optional overclocking warranty plan.

The end of life for the Performance Tuning Protection Plan was initially covered by Zhiye Lui of Tom’s Hardware. Intel said existing plans—which usually ran about three years—would be honored through their durations but as of Monday, March 1, you could not purchase a new plan.

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