When does overclocking void warranty?

[JRaid]

I know that overclocking can void your warranty, but what's the limit? Is it just a matter of increase clock speed at all, warranty void(I can understand this on normal processors)? If so, does the same go for the unlocked variants(K variants eg. i5 4690k)?

[Kevin_M_Intel]

Hello Raiden,

Please note that the warranty on Intel® processors will be void when the CPU frequency is changed. This can be either downclocking or overclocking the frequency.

Here you have a document about Intel® warranty information on processor:

http://download.intel.com/support/processors/sb/warranty_processor_english.pdf http://download.intel.com/support/processors/sb/warranty_processor_english.pdf

Kevin m