Depending on the mainboard bios, overclocking might count as an hardware change. The reason why we give 6 activations for each order, is to cover such cases.
And, don't forget there's the automatic reclaim of older activations 90 days after the last activation. So, along the life of a product, one might get more than 6 activations in total, automatically, without our intervention.
Should you need additional activations if you exceeded all the available AND less than 90 days are passed since the last activation was granted, we can add them manually.